This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. Windeong better Well liked Windsong will love Lovesong Al Doig has said Lovesong finally got right High praise Indeed great modifier himself - Send 2 stamps new catalog I DOD~ON DEIiN Z1ZU Damson Road Bothell WA 98021 208-776-8067 146 Model Aviation iE1C E1 Balsa T000 Cutters OIJ 5 pc Masters Set 1/8 3/16 1/4 5/16 3/8 . $1698 3 pc Builders Set 3/161/4 5/16$998 Whether kit builder scratch builder SQUARE CUT Tools will save time Remove stubborn die cuts cut own squares slots Made US quality machined nickel plated steel Order set today See Dealer Cataloger Order dont carry Square cut Tools call us call well pay shipping US Canada D extra SOIJARE CUT Tools 4073 254-0516 905 N Harbor City Blvd Melbourne FL 32935 DeaIeg/Distributor Inquiries Invited Florida Residents Add 8% Sales Tax
Edition: Model Aviation - 1989/03
Page Numbers: 38, 39, 40, 41, 42, 108, 143, 144, 145, 146
This opportunity Sailplane fliers over coun try further particular aspect hobby/sport meet ings discussions one-on-one presentations socializing RC Soaring contributing editor describes what saw MARCS National Sailplane Symposium THE 6TH ANNUAL Madison Area RC So ciety MARCS National Sailplane Sympos ium held November 12 13 Ra mada Inn Madison WI Paths Future Flight subtitle meetings objective present latest world RC Soaring give indication great hobby/sport headed full two days presenta tions demonstrations discussions Im convinced theres thing Sailplan ers enjoy much flying Gliders talking about Gliders Also its chance midwestern mainly Soaring frater nity have last big get-together before hibernating basements winter Im writing pretty much week end happened will personal viewnot exact report everything went Most presentations fairly technical nature since didnt take extensive notes Ill just stick giving general impressions wishing have transcript proceedings will U Byron Blakeslee published sometime next summer Ill let know about regular RC Soaring column Meanwhile proceedings book 1987 symposium can ordered sending $1000 $1100 first class mail Walt Seaborg 1517 Forest Glen Rd Oregon WI 53575 Its just thing curl up cold winter nights flew Denver Madison Thurs day afternoon traditional pilgrimage EAA Museum Oshkosh Friday Carl Mohs met flight Chicago waiting also Henry Ni cholls same plane Joyce Walt Good also having ar rived short time before Henry staying Goods Florida reservations different flight Any modeler vaguely familiar hobby shops England has undoubtedly heard famous Henry J Nicholls & Son Ltd store Holloway Road north London Henry opened store 1946 retired 10 years ago leaving son Richard charge Henry president ClAM two years 1950s Walt vice-president Walt followed Henry ClAM president have very close modeling relationship among pioneers formulating first rules RC competition flying Friday Carl drove Henry Walt 80-odd miles north Oshkosh wonderful opportunity hear Walt relate some stories about 50-plus years radio flying Also time Id like publicly thank Walt taking time document early days Radio Control modeling Model Aviation magazine detailing Good brothers Guff Model Builder magazine like having Wright brothers hand tell about early days aviation Walt said working another article Model Avia tion magazine will document his38 Model Aviation see 1988 symposium attendees listening Dr Edward Elarantos presentation Nice facilities added enjoyment Above Left isa view EAA Museum Oshkosh WI drive up entrance way its beautiful new building much see Above Right EAA ready special welcoming surprise Wait Good left Henry Nicholls right Below Left EAA Museum has several gliders display beautiful Schempp-Hirth Nimbus 2 wIth wingspan 203 meters Below Right MARCS tour group EAA Museum posed front fourth Mustang produced North American first designated XP-51 tory radio frequencies used RC fly ing presented talk subject 1987 symposium included 1987 proceedings mentioned earlier Experimental Air craft Association Museum before Let tell very impressive place building large modern filled spotless examples important aircraft aviation history RC Sailplane enthus iasts also fascinated aviation gen eral includes visit EAA Museum should plans couldnt begin list individual planes include types homebuilt warbird antique classic aero batic racer special planes range replicas Wright Flyer Spirit St Louis fuselage Burt Rutans Voyager round-the-world plane tone EAA Museum set walk Entrance Gallery look up see three bright red PiUs Specials hang ing 30 feet overhead bomb burst forma tion Youll see short introductory film wide-screen movie showing won derful shots annual EAA Fly-In Con vention held summer Oshkosh big event thousands planes March 1989 39 Noal Rossow left Dave Mroz right demonstrating Sucker outfit vacuum bag ging Dave has hand-operated pump hand may have seen ad mag Left This hit killer sink Pat Fiinn points out features Sugarloaf cross-country race map Pat won 1988 Right John Hohensee Lee Murray Al Scidmore L-R work creating next generation super Salipiane using Lees PC-Soar computer program i; Y Left Bob Seaiy center has just made sale Ultima kits Wait Good right Rich Burnoski left looks Right Chuck Anderson seated demonstrating Airfoil Plot Program L-R Phil Semmer Bob Paulson Wayne Lanphear Computers finding uses Jim Thomas showed off Airtronics Moduie/ATRCS transmitter servo installation Dodgson Windeong Two aileron servos front rudder elevator left flap right over 400 thousand people attending during week movie theater special too sound system puts Out over two thou sand watts see aerial close-up P-5 1 Merlin engine sounds great actually vibrates bench youre sitting excellent shots supersonic Concorde landing taking off Wittman Field during fly-in could literally feel tremen dous power group 16 Sailplaners received VIP treatment having special tour guide Gene Chase EAA director re tired Navy pilot recently retired editor EAAs monthly magazine Sport Avia tion Gene knowledgeable about planes display has rebuilt some flown Gene gave us extra treat taldng us across sod runway two large metal hangars known Pioneer Airport han gars open regular visitors chock full kinds historic airplanes absolute heaven aviation buffi Gene passed along short histories planes plus impressions flying time passed quickly could scarcely believe could easily spend 40 Model Aviation Left David Fraser computer showing Don Harris Cal Postuma Larry Jefferey Sailplane Design Program Right 600 points behind Larry Jolly explains caught Gene Englegau F3B Team Selection Finals Thats Barry Kennedy behind Larry Left Dr Edward Elaranto telling attendees always find thermal Optical radar also showed what thermals really look like Right Hew itt Phillips explains results studies boundary layer separation Test wing section wIth heat sensors mounted car hood four hours museum havent Oshkosh ever area Id strongly recommend making time stop museum After tour ended whole group retired local res taurant dinner airplane talk enjoyable day thanks go MARCS continuing organize trips Things began Saturday morning 8 am registration coffee doughnuts opportunity say hello friends Attend ance year about 90 down ill hand 1987 symposium proper started 9 am opening re marks Chairman Bill Vogelsang honor leading off given Walt Good showed slides Henry J Ni cholls others early postwar days Radio Control international competition flying apparent Walts remarks friendships has made around world people sharing similar interests really important part hobby After Walts introduction Henry said few words about experiences modeling also remarks about much organization American model ers AMA admired abroad Henry said AMA represents people has finest governing body national modeling organization Walt continued description now-famous Gutsy Lady Walts name Carl Goldberg Gentle Lady new strengthened wing Gen tle Lady course great entry-level Two-Meter kit Walts sophisticated wing construction Selig 4061 airfoil Gutsy Lady becomes plane also terest experts Walt said likes 4061 because its wide speed range will fly fairly fast will also slow down land ing stalling Walt flies CG center gravity 41 percent far back no washout tips Also inter esting Walt constructs composite spruce carbon fiber spars uses 2 x 2 aluminum angle stock clamps pieces inside angle epoxy curing makes spars perfectly straight both directions Plastic backer film MonoKote keeps epoxy sticking aluminum Second agenda Noal Rossow Dave Mroz Detroit gave demonstration Vacuum Bag Composite Wing Construction Noal Dave have experimenting vacuum bagging foam cores using balsa hardwood glass skins several years Bagging coming pretty popular days unique vacuum pump Noal Dave using little hand operated pump looking something like pop rivet gun small vacuum gauge top evacuates oaly small amount air per squeeze said push air out bag before starting pump doesnt take long get 5 mercurywhich want white foam anyway will go higher vacuums necessary always thought needed motor operated pump make sure pump kept up leakage Noal said make sure bag well sealed Mortite caulking cord vacuum holds first few minutes can pretty sure will hold hours dont know what vacuum pumps de signed seem ideal use Noal Dave marketing pump along hose clamps poly bag material instructions what call Sucker Kit $5995 going like hot cakes show special $45 bought March 1989 41 Odor Co m3Wjt ltmoIq usa c.ana Sc Otslycertihedctseclssoe money orders accepted Minimum order $1200 toe ttree pacloagesot 4 Pomerpoles 5350 per package -4- 0150 shipping handling CT residents add 75% sales tan Prices subject change notice DEALER INDUNRIUS INVITED further information dealer crices send SASE Boniness Card SERMOS RIC SNAP CONNECTORS C&r Ccues St*ui Box 16787 Stanfoxi CT 0690203322-6294 will report later RC Soaring column boys also selling wood wing skin material have very nice white birch 0018 thick African mahogany Also catalog graph ite fiber tape 14-mu Mylar laying up glass skins arrow shaft hinge kits special item will available April show-and-tell video laying up types cores wood glass skins video will sell $3995 should valuable just starting bagging Noal Dave call company Compos ite Aircraft Engineering Supply Ad dress Box 866 Lapeer MI 48446 phone 1-3131664-3330 offer No Risk 100% Satisfaction Guarantee fliers thinking about building high-tech wings can fairly certain being successful trial error work Noal Dave went through Next up Charles Fox talking about experiments crescent shaped wingsmostly cross country ships Cres cent shaped refers wing planform leading edge outer portion swept back either smooth sweep several short straight sections angled back approach tip trailing edge straight Theory design began some years ago full-size sailplane pilot Wil Schue mann chopped wing tips off 183meter-span AS-W 12 could fly 15-meter Standard class found revamped 12 didnt have nearly lowspeed thermaling performance regu lar 15-meter planes Wil reasoned blunter tips adding induced drag high pressure air wings bottom coming around tip interfering lower pressure air top Upon performing inflight experiments wool yarn tufts found flow air along entire trailing edge tip root causing high drag Wind tunnel theory showed sweptback leading edge small tips might pre vent spanwise flow air thereby re duce drag Wil modified wings found 12 performed better other 15-meter sailplanes wrote paper Soaring magazine 1982 Starting Wils pa per Klaus Holighaus designed Schempp-Hirth Discus Schuemann Planform became famous has become trendy F3B planes last few years also seems work models Charlies experiments several X-C wings plus theoretical LID curves have shown him enough thinks its worth continue putting Schuemann tips planes Craig Christensen came next talk about recent developments Electric Sail plane flying Craig pointed out Elec trics gaining popularity Sailpian ers need fly spaces too small lay out winch hi-start Modern kits mo tors Ni-Cds chargers make Electric flying accessible everyone Some kits like Airtronics Eclipse can purchased complete motor works quite well $50 other hand feel am bitious rich can get F3E 60-size Astro cobalt motor 30 cells An F3E plane will climb nearly straight up go out sight almost before know what happened Craig attended F3E World Championships held St Louis last summer said performance planes opened peoples eyes Yes heavy wing loadings over 20 oz per sq ft also efficient Sailplanes Though fly fast still can thermal very nicely Some Sailplane designers taking note concluding weight always handicap regular AMA ther mal contest flying lot questions au dience about what would good combina tions motor prop battery controller various-size planes experienced Glider pilots get confused cause Electrics whole new ball game Figuring out best way install parts problem too Craig has business side supply Electric compo nents Thankfully can also provide re quired advice stocks kits motors props chargers just about everything youll needup including Multiplex radios Contact him 16550 Linch Path Lakeville MN 55044 phone 1-612/4357406 After lunch David Fraser presented very interesting talk Design Perfect Sailplane David has just tool help computer program wrote called Sailplane Design 20 what Davids flyer says about Sailplane Design program com paring different model Sailplane configura tions will work size airplane airfoil data available pro gram implements standard low-speed aero dynamic equations arrive lift/drag graphs polars configuration en tered user uses stored data number airfoils accepts user entered file data fuselage CG location overall size weight etc comes over 45 airfoils already stored including Wort mann Selig Quabeck NACA Eppler designs airfoil data wind tunnel tests program fully uses available ranges Reynolds numbers program plots performance user-specified design will accu rately show effects airfoil changes CG shifts stabilizer changes differing weights aspect ratios wingspans ad dition performance graphs may plot airfoil data modify add time wont go technical details computers printers plotters Inter ested Sailplaners can contact David directly about things However want stress almost magical power pro grams compare Sailpianes policy leave designing experts Continued page 108 42 Model Aviation ... Control Line Products Modelers serving Madelers ~FinisItieg FriendlgelsAdjssIahle Rudder Hares *Cetrgl HartsCugtrul Lines 4 IIeatADuttRelIcraeho les AdjastabIeLeadgstCaidesbClassic Kits CuuIgm Motor Moants ltd each Alumitum leserts UNSURPASSUD QUALITYGUARANTEED SATISFACTION Seed same address $100 tu receive Naur new espuaded cutalag yes will get $2 00 nAt tlrut srdert cAma ModeI ri 3 E told Weslt ktdooro 4607d dea t oquirtes Ittlted Made America IJ American Technology RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 Testor/McCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Colt tertre fur free information RJL Industries PO Box 5 Sierra Macte CA 91024 818 359-0016 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings TOLEDO THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4x9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 cents par order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $100 per day children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETS ARE ALSO VAILABLE AT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 61-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days. APRIL 7 8 91989 FRIDAY9amto6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio Sailpiane/Blakeslee Continued page 109 Sailpianers can learn lot watch ing trying little multi-task flying themselves clubs scheduled few con tests included distance task would help develop American fliers could compete world class level Dis tance task flying difficult plain old thermaling need find lift same time try get someplace fast fliers reluctant jump straight national-level F3B because cost competitive planes winches radios Sportsman F3B class compe tition perhaps people would come out try planes would limited straight-wing Sagitta wouldnt have fly against $1000 molded glass shipand club winches would used Perhaps 12oz wing loading limit would trick Please let know what think about Sportsman F3B Saturday wound up Pat Flinn De troit talking about cross country racing showing videotape Sugarloaf Clas sic X-C race two-day event spon sored Capital Area Soaring Associa tion May run 315-mile course south Frederick MD Pat longtime X-C enthusiast excellent salesman joys tearing around countryside back pickup Watching video could tell guys having great time Several TV sets placed around room everyone could see well Before forget mention sound system room excellent Special thanks go Joe hnilkowski han dling sound recording tape display two big X-C planes Rusty Shaw-designed ship other members Eastern Iowa Club used win 1988 SOAR Great Race other Bob Sealys 167-inspan Constellation available kit Bob $235 Both Rusty Pat said speed strength name game days said future designs would built close 11-lb limit bal last making little smaller nec essary will strong enough high-speed flight Pat passed out literature Dart Experimental tCZ111 two-piece 1I full size aircraftEE3 Top Turkey Formula *U*55trH several X-C races held annually includ ing Souvenir Program 1987 Great Race valuable threeviews specs planes entered Id say Pat probably convinced few guys go home start working X-C ships Saturday evening almost everyone tended buffet-style banquet afterdinner program thought something really special slide show model full-size glider flying Europe Steve Metz Minnesota Steve fullsize sailplane pilot interested vin tage gliders Most slides Vintage Glider Rally held Bourges France July 1987 rally popu lar annual affair summer vintage fliers assemble over Europe dif ferent place fly old planes talk soaring Steve showed interesting slides took Wolf Hirth gliderport HahnF-20 Tigershark *4800 Send chack money order add *300 esidents add 6% sales tax PARRISH AIRCRAFT Et Scale Models 1125 SW 48th Tsr PlantatIon FL 33317 March 1989 143 MINI-JET SERIES Thee pisriasfeature babe construction Designed intermedlate flyer in A4 mind will accept 20-26 size engine iuae reer exhaust engine exceptional Skyhawk perforniencel thrill Jet heasies ducted fan *4000 &H *4500 Proud Kird ii designed meet OSPRA Formula 120 rules 114 scale model will accept 60-120 ci size engines Epoxy glass fuseisge foam wing construction Full kit *1K Semi-kit also available lno woodl *ia Please add *i0 5&H 305 581-4477 HANGER LOG Order yours today SEND $2 C/L & R/C Innovative Unusual Kits OR Plans Books Quick & Easy Build Inexpensive Stable Durable STANGEL ENTERPRISES P Q BOX 336 M WAUKESNA WISCONSIN 631874336 MEMBER EAA AMA weide near Kirkheim Stuttgart Ger Pilots field much flying over famous Teck hill Steve also attended modelers gettogether Hahnenmoospass near Bern Switzerland place high moun tains ski resort winter RCers take over summer especially early Au gust scenery magnificent lift plentiful specialty flying big like /4 -scale Gliders Steve met Jurg Wer muth friend Martin Bamert Mar tin told us about September RC Soar ing column Jurg co-designer Speedo twist-wing slope ship Martin de scribed Steve said Jurg flew Speedo did such incredible things everyone stopped flying watch Accord ing Steve Speedo everything Mar tin said wasand Sunday morning symposium devoted Table Clinicsdisplays coffee doughnuts guessed inevitable Glider gab Table Clinic someone sets up demonstration gives one-on-one explanations anyone terested AMERICAN QUALITY SUPERIOR PERFORMANCE PRODUCTS YOU CAN NE PROUD OF AT TIDEWATER Al BECAUSE THE IS THE PRI] Big year computers David Fraser demonstrating Sailplane De sign program Lee Murray John Hohensee Lee John have worked gether design common program different computers Lees IBMs compatibles called PC-Soar Johns Apple Macintosh MaxSoar Im trying out PC-Soar now myself glad see hear about pro gram straight horses mouth speak wanting information PC-Soar MaxSoar Id suggest con tacting Lee 1300 N Bay Ridge Rd Ap pleton WI 54915-2854 phone 1-414/7314848 Also working computer Chuck Anderson demonstrating Airfoil Plot Wing Design programs really handy items scratch builders cause will spit out almost airfoil want size Wing Design pro gram will tapered wings allow skin thickness spars will build washout sounds good write Chuck additional info Box 305 Tullahoma TN 37388 Bob Scaly new Ultima 129-inspan thermal ship display along variety very nice fiberglass fuselages makes Ultima beautiful plane glass fuselage foam wing ailerons flaps T-tail must OK Walt Good bought take back Florida Send SASE Bobs catalog 521 96th Ln NE Blame MN 55434 Jim Thomas demonstrating features ATRCS-converted Airtron ics Module transmitter use Dodgson Windsong Jim likes ATRCS computer encoding system very much has worked out neat installation Windsong separate aileron servos mounted front servo tray trick elevate aileron servos 14 pushrods wrn clear other servos Tom Gressman selling oldie goodie kits Wayne Fredette showed winch beautiful drums Ford longshaft starter motors Noal Dave flogging Sucker kits other materi als composite wings thought next couple hours program worth trip Dr Edward 60 SCALE PROFILE LLENT TRAINER SPORT PLANE 111 64 SEMISYMETRICAL WINS WINO AREA ARNEL * 58 SPAN WINS AREA LITE WETURT 2LR IUNAN* * 45 CYCLE 90 4 CYCLE LITE WEIGHT SLR 10 ALL RALDA SHEET CONSTRUCTION 4 GEAR COMPLETE EDT POLISHER ALUM LANDING GEAR ROWE ELEC OR GAS RUILDS EAST SIZE ROLLED PLANS 5 TAIL WHEEL RATES FURL TARE IN WHEELS ALL HOWE ULTRA LUTE WIND LOAOINGFLAT ROTIOM WINGCOMPLETE LINE AUDALARLE ENJOY PERFORMING LOOPS S S SPINS * LOOKS LIKE CURFLYS LIKE CUB TRE SPORT CURAT QUALITY HURRY EROPS SNAP ROLLS L TURNS R ARUSOS 144 Model Aviation CA MASK CA glue works wonders building rrtodels right Unfortunately gives enough fumes knock vulture f carcass modelers have suffered medical problems after inhaling CA fumes take chances special vapor respirator filters CA fumesl soft face mask adjustable straps comfortably fits face sizes easy breathing valve allows prolonged use providing dependable filtering concentrations up 1000 PPM though rugged industrial mask light weight elimi nate fatigue Dont get gassed CA Get protected Order CA Mask today Just $1247 shipping cheaper hospital visit Money order Master Charge Visa include expiration date check allow 20 days clear Sorry no CODs elican Enterpnses 2540 RIDGE ROAD LANSING ILLINOIS 60438 Phone 312-896-8151 Tidewater Hobby Enterprises 14788 5147, SJlUFULDrt3209fl 904 245-4653 Elaranto ot University ot Wisconsin spoke Meteorology Modelers Dr El aranto full-size sailplane pilot understands thermals never ending need find Ed meteorologist specialty optical radarwhich showed us can actually see thermals Optical radar similar normal radar ex cept uses laser beam energy source can examine segment sky about 30 degrees wide 40 degrees high 14 kilometers out Ed explained rising air carries minute dust particles along what radar actually sees showed photos optical radar displays taken periodically early morning afternoon could see plumes start small gradu ally build height width sun warmed ground also showed video tapes depicted lift sink timelapse fashion over segment sky absolutely fascinating see thermals moved along prevail ing wind usually line some what affected topography nice circular things like usually think fairly irregular tended shimmy around dance cold down air surrounding Im sure visualization will forever change way fly models because now can better picture what sky actually looks like Larry Jolly next up spoke Trends F3B Design think Sailplan ers xnuw 01 tarry rui ulose dont hes 1989 US F3B World Champion ships team member has won Nats sev eral times puts out excellent line Glider kits under LJMP label writes RC Helicopter column Model Aviation magazine general skilled flier knowledgeable modeler youre going find Larry started saying what honor will represent America World Championships France next year said team really has its act together will trying very hard bring home bacon time Since Dwight Holly won F3B World Championships Sacramento 1981 US teams havent fared well England 1983 Australia 1985 Germany 1987 Larry Seth Rich experienced F3B competitors excellent all-around fliers proper equipment prepara tion practice guys can subject practice Larry said cal culate about $30000 budget will re quired cover cost air fares practice sessions California pay weeks practice France prior World Championships AMA will take care entry fees fares to/from France lodging during contest fliers need buy build equip mentplanes radios winches can bet pilot will destroy several planes during practice big effort de serves support As trends F3B Larry said will def initely toward smaller less powerful winches slightly smaller lighter planes speed task will test planes strengthnot launch zoom question Larry hoping new reduced power winch rules will used 1989 champs because Ger mans now have such strong winches no body can touch launch height everyone has use weaker winches launch heights will lower will bring flying skills play new rules Larry confident US pilots can fly compete evenly team world Go get em team1 last speaker agenda Hew itt Phillips topic Use Electric Equipment Detect Boundary Layer Sepa ration Turbulence Hewitts goal study airflow separation model wings Since didnt have access wind tun nel employed expedient mounting wing above hood car driv ing down road Several visual means finding flow separated tried worked very well Hewitt found company microscopic-sized heat sensing device computers other equip ment read minute differences air tem perature anxious try Hewitts rolling wind tunnel An array sensors across wing detected air detached turbulent reat tached computer enhanced visuali March 1989 145 zation laminar turbulent flow very interesting original research Hew itts part final item drawing some nice prizes Bob Sealy donated Ultima kit World Engines Expert radio Paul Carison kit new Quasoar design Ace Radio Digipace Needless say didnt get thing quickly off airport get back Denver work Monday visit Oshkosh two days seminar very educational memorable weekend time went very quickly enjoyed greatly Id say attendees seemed enjoy ing themselves too What else would ex pect 100 guys get together talk Soar ing Finally Id like thank members MARCS club putting sem inar including Chairman Bill Vogelsang Walt Seaborg Al Scidmore Tim Morgan Frank Baker Joe Imilkowskl espe cially Carl Mohs excellent taxi ser vice RC Aerobatics/Van Putte Continued page 45 attack Usually almost always wing sim ply assumes streamlined profile af fected dihedral Naturally model skidding more rudder input creased dihedral now produces its own forc es depending other force setups di hedral fuselage shape stabilizer etc good models have tested will easily fly straight line shift top bottom rudder corrections what its worth best designs exhibit least corkscrewing altitude loss always have lots forward lateral area better put distribution fuselage side area approximates wing CG fuselage knife edge flight very close CG normally indicated Very interesting Dick Thanks got note Bud Overn Santa Ana CA wrote passing Hi Johnson no longer able get thin styrofoam sheets called white skin Through efforts George Sparr Aerospace Composite Prod ucts again available 24-in sheets ad dress PO Box 16621 Irvine CA 92714 Thanks hint Bud Modelers might also interested George has lot composite products including glass cloth Kevlar mat Aero c mar Aero k mat others Ive proba bly forgotten Drop him line As written its just before Christmas hope nice happily building away onor otherwise enjoyingyour RC oriented presents Santa might well building because its cold almost everywhere country late January panhandle Florida RC Scale/Hanft Continued page 47 possible prefer make full-stall land ing roundout effected airspeed dissi pates altitude ever slightly above runway attitude established held grad ually pulling back stick holding nose aircraft up losing airspeed until aircraft settles softly onto runway grass full Up elevator paramount point keep aircraft nosing over own misfortune point slightly before tend relax elevator rudder controland ground loop inevit able ground loop uncontrolled maneuver aircraft makes rapid turnoften full 3600—while rolling along ground conventional-geared aircraft wing tip outboard side turn can scrape ground often causing some airframe/fabric damage RMcM Scale model makes proper stall landing pretty realistic its sure bring roar spectators fellow contes tants Tricycle-gear planes follow almost same se quence except initial contact ground main gear airspeed lost nose gear gently settles through make contact runway elevator can no longer hold off have seen space shut tle return earth have watched breathlessly command pilots gently land huge craft Its like attempting landing plane full eggs Just beautiful Dont agree present flight can make differ ence between average score winning Continued page 148 ultimate question LOVESONG answer have tried latest hi-tech looking thermal competition gliders know original. 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