L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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Edition: Model Aviation - 1984/06
Page Numbers: 113, 114, 115, 116, 117, 118, 119
L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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Edition: Model Aviation - 1984/06
Page Numbers: 113, 114, 115, 116, 117, 118, 119
L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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Edition: Model Aviation - 1984/06
Page Numbers: 113, 114, 115, 116, 117, 118, 119
L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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Edition: Model Aviation - 1984/06
Page Numbers: 113, 114, 115, 116, 117, 118, 119
L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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Edition: Model Aviation - 1984/06
Page Numbers: 113, 114, 115, 116, 117, 118, 119
L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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Edition: Model Aviation - 1984/06
Page Numbers: 113, 114, 115, 116, 117, 118, 119
L IJffl ME NEWSLET ACADEMY OF MODEL AERONAUTICS w 1810 SAMUEL MORSE DRIVE CL World Champs Supporter/Spectator Lodging AMA members wishing attend upcoming Control Une World Championships September 17-22 1984 Westover AFB Chicopee MA following motels avail able advance reservations Parvick 413 592-7722 Best Western 413 592-6171 Skyline Inn 413 781-0900 Howard Johnson 413 739-7261 calling will beneficial mention AMA member Three other motels area Quality Inn Ramada Inn Suisse Chalet al ready booked solid competitors eign supporters contest officials 1984 Hats Entry Form Available Contestants 1983 Nats auto matically sent 84 Nats entry forms recently 83 Nats want enter 1984 send new entry form now Please include business-size No 10 envelope self-addressed 20-cent stamp pasted upper righthand corner Mail request AMA HQ 1810 Samuel Morse Drive Reston VA 22090 1085 US NC Soaring Team Selection Program News teameelection process 1985 US RC Soaring team now progress new system being used time Previ ously US team has selected par ticipation series Quarter finals Semi finals Finals time will unlimited number Qualification Attempts Finals Qualification order participate team-selec tion Finals aspirant must first register Englands tamous ano re spected aeromodelers died suddenly January 4 1984 Ron Warring active fly ing writing field 1940 until death author multitude books magazine articles model de signs during career Except brief association Aeromodeller magazine early Forties strictly free lancer output prolific make use psuedonym AM Colebridge now again keep seeming dominate field later years Ron turned field boating also wrote advertising Competition Dept AMA HQ fee $30 required return mail will receive qualification form further instructions may make un limited number qualification attempts before August 1 1984 cutoff date successful qualification attempt occurs same day aspirant first makes FAI Speed run 27 seconds better within two hours same model scores minimum 400 points FAI Duration task perfection 460 points Speed run must made measured FAI course proper sighting devices winch conforming FAI regula tions weak link towline required Continued bottom next page copy tor oiaroo ana instruction booklets various British model manufacturers Despite commitment Free Flight especially rubber-power/Wakefield instrumental founding Society Model Aircraft Engineers SMAE Control Line subcommittee colleagues called him first second-generation flierswho could make theoretical considerations credible Ron able expound theories model aerodynamics achieve results flying field repre sented UK Wakefield competition 1949 1950 1952 never won event placed high three times HELP WANTED Tractor-Trailer Owner-Operator tan dem-axle tractor based MidAtlantic states area planning attend 84 Nats individual will contract haul AMAs 40-ft Nats trailer Reston VA Reno NV July drive same trailer Reno NV Spring field MA mid-August As alternative AMA will con sider hiring two experienced semidrivers drive rental tractor same trip Interested drivers should contact Bob Vojslavek AMA HQ between hours 830 am 500 pm Eastern time week-days 703 435-0750 June1984 113 RESTON VA 22090 Ron Warring--Aeromodeler 1920-1984 Six New Nuts Events 1984 AMA National Contest will have events ever scheduled Nats entry form lists total 76 six new events 1 An extra Indoor Hand-Launched Glider event now two classes instead High-Tech All-Wood 2 Manhattan Cabin rubber-powered door event some call Bostonian 3 Free Flight Electric Power Instead class now twoA B 4 FAI RC Pattern now separate RC Masters pattern using FAI Turnaround maneuver schedule 5 FAI Class F3B RC Soaring First time Nats event features Speed Distance tasks well Duration 6 FAI RC Helicopters Last year un official Nats event official year Rounding out FAI RC competition Nats FAI RC Pylon Racing also scheduled again year Nuts Indoor Flying Special Events May issue Model vi at/on page 114 ve details three speciaL Indoor events Reno held after official Nats Indoor events over three RC Duration RC Scale Control Line Scale events primarily electric-powered models awards will also provided models using other types quiet power such CO-2 rubber-powerusing same basic rules electric power wing loading total weight addition will special RC event Lighter-Than-Air LTA will also use form quiet power winners will determined speed laps around Figure-8 course given amount time 5 minutes point timelimit Speed restricts amount time taken up constestant otherwise LTA flight could go hours case Speed will relative since nature LTA flight will really slow safe challenge build light controllable electric-power models Indoor events no exotic type power supplies permittedbatteries must Ni-Cd types available Unofficial Nuts Event NC Duration brand-new eventRC Durationwill unveiled 1984 Reno Nats part Duration jamboree unofficial event about information will published next month As aid modelers may wish construct RC Duration models event following information provided culmination years experimen tation several dedicated modelers Object Event purpose RC Duration control what otherwise might appear ordi nary FF Gas model such way will return starting point end flight Employing RC manner permits competition-type FF models flown fields would otherwise too small purpose originators event view viable solution vanishing-field problem yet seen should noted RC-Assist already widespread use Old-Timer contests un til now has employed modern Duration meet have access back issues various model magazines should noted Dick Mathis wrote excellent article subject July 1972 issue American Aircraft Modeler magazine page 20 Normally two RC channels used RC Duration model rudder perhaps elevator Engine shutoff easily accomplished traditional FF manner timer although some fliers preferto use aservo-controlled fuel shut-off New Problems Adding RC modern high-performance FF model may simple may seem talking about putting RC equipment planeany conscientious modeler should able easily Its what happens use RC brings problems Most modern FF models have configura tion features small vertical fin great amount dihedral polyhedral relative ly-high wing location pylon small fin will permit model attain large yaw angle relatively small amount rudder offset happens model can quickly begin series power-on snap rolls may controllable before model destroys itself chief culprit situation RC servo moving rudder servo forces rudder new posi tion based control input transmitter control linkage plane modern FF design small amount rudder deflection during pow ered phase flight may enough initiate snap-rolls However ruddercontrol input could softened undesire able situation could greatly alleviated Softening rudder-control input could done either two ways Using simple rudder-only pulse-proportional RC system such Ace RC Inc Commander pulse-type actuator Adams Actuator might easiest way go Since Adams Actuator has limited amount power air pressure rudder during power-on phase flight would limit far rudder would move glide much control would available Another way soften rudder con trol might use some sort spring pushrod servo conventional system However no reports such system being used no data available Still another solution would recon figure model less dihedral larger fin small rudder shorter na pylon course simplest solution would refrain using RC during power-on phase flight Information detailed guidance subject available Ron St Jean can call him Nevada 702 885-4611 during day 702 358-3570 evenings week ends Unofficial Nuts Free Flight Events availability good-sized pond 84 Nats FF area has prompted NFFS decide hold various ROW rise-off-water Gas Rubber events part vast Unofficial Events program AMA rules will used events will probably flown Thursday August 9 Soaring Team continued addition qualification-attempt event must have registered beforehand Team Selection Committee AMA HQ An AMA Contest Director must witness certify qualification attempt Team Selection Finals date location Finals have yet selectedalthough traditionally Finals have held Labor Day weekend Finals will scheduled four-day affair will run much previous ones have An additional entry fee $40 will required entry Finals will cut Finals final flying limited 15 pilots postcut scoring will continuation pre cut contest rather being totally sep arate event enough rounds flown will throw-away round World Championships will held 1985 Australiaprobably April Increased Participation hoped new team selection process will result greater number con testants entering program Since new program qualification process rather elimination process means anyone really prepared fly competitively national level has much better oppor tunity make Finals also makes less likely someone really prepared will qualified hoped local clubs will take ad vantage opportunities schedule FAI contests during qualification window Remember qualification must com pleted before August 1 1984 114 Model Aviation 19B4 flATS UPDATE gsg ii i17 L27i7iWzWiW LJ NG TO RENOWILL THE OLYMPICS INTERFERE Summer Olympics being held West Coast has concern great crowds visitors Olympics would make hard travel Reno NATS hard find room get Some air lines have announced will offer discount fares Olympics hotels car rental companies have some times tacked surcharges basic prices Will affect anyone traveling Reno 1984 NATS No Reno official Olympic terminal city has blacked out discount air fares Furthermore blackout appears lifting some California cities well Both TWA United have announced availabil ity some discount fares Olympic period As housing rooms seldom hard find Reno rates vary widely through year low room rates see advertised winter dont apply during peak months like August Thats its important take advantage Room Reservation Forms can get AMA Headquarters Sending stamped self-addressed envelope AMA request NATS forms will get form will make reservations through Reno Housing Au thority several hotels form choose assures place stay get can change hotel find another prefer Ordering Room Reservation Form AMA Headquarters also puts list receive NATS Entry Kits include final schedule entry forms information need register NATS contestant DISCOUNT AIR FARES AMA members can get benefit economical air fares Reno calling Associated Travel Boston toll free number 800 3434064 can call latest quotes travel costs NATS sure tell AMA member will attending National Championships National Convention S I9 g9 mw 2 Lwi~ALLS ~k45 Th.Ia OkDj u-rn Ur45 PoeI, 5@0 i8 Drbe~n __ ASSISTjqIA Aflealalfj4GAigjfOOT.yrWe1 ~chosaeoEn1wlCO~4hiw MC#gc $aPChe mWO~IVv e__ANAc WANTED iC*h we~In HELP m M THE ACADEMY OF MODEL AERONAUTICS needs lots ofWILLING NTEERS between August 3 August 12 help the v ~frluftlp1SlQRE 5hiler eh NO NATS Get meet thousands fellow modelers official i .bSglh OOtm national events see parts hobby youve never seen 1Dle Oele Poe [v32][b-1-10-1-10]]9 efore Partial work days finespend much time feel ieee al0 b BENEFITS package Official NATS paraphernalia An invi O on Officials Party FREE 1955 AMA membership four ull days work does have consecutive days can p IV ref artial days totaling four Up $10 per day room board AL 5eAeep4 onDon forvouL , qO PoY4bf C~V reimbursement hiqualifying inteer ta NO EXPERIENCE NECESSARY-JUST PLENTY OF ENTH U- eAlj 5@U05on _________ SIASMI registration information contact Murel Kee Local ~onP 4YNAGERleoieoplesi Manpower Coordinator 11452 Rocky Mountain Reno NV 89506on 2Oory 702 972-6753 AMA Ha Joyce Hager 1810 Samuel Morse Drive g05•eweooleepa Reston VA 22090 703 435-0750 Youll glad didi r this~i hopee9,gneee~Oh eei C e Polo oghi Lephi4I fU9 0100 __l~ Ae *-lOffleeee~ _____ I__ 4- SASa Ccix"~e4 See able tl -IV apej,moei g OftZ Odenb01lOSl0 Nhi1nleleJV/ftonp4Ve beog 5 ehil rofrhilonisen GMOPoOh~ en enoneep IOfJ 05 -a~ 4eei " c""g4 sa~eftepn0iIt Ce____BaAlex 4EelcA& lhie~,lrueA0 hey ___________Rd4Uelap-y vi~ftHii4r"fr & C~--~ 94r, ,U -fi3s, June1984 115 Flying High Rune Effect High Altitude High Temperature Performance Model Aircraft Much has heard about problems expected years National Cham pionships because high field elevation common sense often lacking discus sions subject should realized Reno model flying enjoyed resi dent modelers resorting tricks special designs following article based largely information Jim Stimson active modeler Carson City NV near Reno Jim retired Air Force officer aero nautical engineer 30 years experience flying prop- jet-powered aircraft Most information appropriate Radio Control activities much good background Control Line Free Flight effects altitude temperature lesser extent humiditysignificantly affect engine performance particularly flies 5000 feet temperatures range 80-100 degrees F can expect Reno-Stead during Nationals August 1984 rest article tells factors temperature altitude de grade aircraft engine performance pro vides some common-sense recommendations to play safe still maximize use available power engine Standard Atmosphere sea-level air pressure 2992 mercury sea-level air pressure will support column mercury HG 2992 high standard temperature 59 degrees F 15 degrees C location like Reno atmosphere standard due higher altitude less pressure higher temperature August Some Definitions Terms Pressure Altitude reading pilot full-scale aircraft gets altimeter altimeters barometric pressure dial set 2992 HG However altitude reading height above sea level except under Standard Atmospheric conditions 2992 HG air pressure actually existing sea level standard temp erature planes altitude sealevel temperature 59 degrees F Density Altitude pressure alti tude corrected non-standard air tempera ture known density altitude occurs temperature pressure altitude Re gardless actual altitude air plane operating its performance will though operating altitude equal existing density altitude Figure 1 density altitude chart commonly used determine density altitude based pressure altitude air tempera ture Remember density altitude what really looking because airplane engine performance based Simply put performance decreases increasing altitude increasing tem perature determine density altitude given day flying field locate air temperature field horizontal bottom scale graph read vertically up until intersect field sure actual altitude read left horizontally until intersect density altitude vertical left-hand scale graph As example assume air tempera ture field 90 degrees F its pressure altitude 5000 ft Find 90 degrees bottom horizontal scale Figure 1 graph read vertically up 5000ft line read across left read density altitude 8000 ft really means although map chart may state flying field elevation 5000 ft model will per form altitude 8000 ft Note morning temperature 60 degrees F density altitude just 6000 ftnot too much higher actual 5000-ft field elevation moral fly early day youll 10000 9000 8000 7000 6000 ILU LU ULU 0 4000 I-J 2 LU 0 5000 3000 2000 1000 S L K 74 p / p WI /4A ~x1 o c 74 7 4 mize altitude effect due tempera tu re Effect Humidity respect Standard Atmosphere note effect high humidity replace air molecules water-vapor mole cules Since air containing water vapor less dense dry air engine breathing less-dense mixture its power output will reduced However high-altitude model flying done Western states air extremely dry effect humidity engine performance consid ered negligible situation Reno Performance Calculations Using fixed altitude 5000 ft such Reno-Stead table can constructed show percentage horsepower loss increasing air temperatures values V / / ZI2Z / V Ir77v 4, 74 p 7 772r 1~ 7-7-Id-i -20-10010 C 20 sI IaIa I f rf 10 20 30 40 50 60 70 30 7 I4050 Ia I 0 90 100 110 120 Model Aviation OUTSIDE AIR TEMPERATURE Fig 1 Density Altitude Chart pressure temperature air density ratio calculations can extracted Standard Atmosphere table obtain re sults depicted Table 1 As previously mentioned can expect loss engine power increasing altitude increasing temperature situation af fects airplanes performance throughout its flight envelope takeoff climb level flight takeoff roll will lengthened less horsepower available increase time takeoff roll allow aircraft accelerate its new higher takeoff speed Pattern ship possibly add few seconds takeoff roll Rate climb will reduced same reasons Since planes climb rate based amount excess power available reduced power available will decrease its rate climb like manner performance aircraft will somewhat reduced effect will noticeable temperatures reach 80-100 degree range final comment due remember highG-force steep turns cause stall speed aircraft increase point high-speed stall could occur Smooth coordi nated turns will reduce possibility hav ing airborne problem play safe good idea test-fly aircraft new environment determine its ability cope changed flying conditions couple test hops should ease ones concern Remember everyone will flying under same handicap general fly like know engine putting out 20% 25% less power usual compensate accordingly have choice rules allow advance coming Nats put larger enginea 40 instead 29 35 a60in place 40 etc Remember Reno-arca modelers fly regularly minimum problems following principles noted Some Further Notes Lower wing loading less model weight helps matters out does less drag will give speed same amount power key flying power di minished fly smoothly coordinated allow time complete maneu vers prepared use up sky ground space what can physic ally model help out situation concerning power need model weight want lessbut mostly concerned mentally about thinner air supports less time and/or speed required compensate final thought world altitude rec ord model aircraft over 26000 ft set using relatively ordinary airplane Competition Directory COORDINATORSCL W R Bodzioch Jr 235W Glade Palatine IL 60067 CONTESTFF Jim Bennett 324 Helfenslein Ave St Louis MO 83119 I BerniceWilliams347 Southwick Rd. Westfield MA01085 VII events except RC antireOistrictexcflptMichigefl II RSobrino872688th St WoodhavenQueent NY 11421 GreggSeydel3625 C IonaTerr CudahyWI 53110 RC Ernest Nikodem 407 WillOw St. LockpOrt NY 14094RC Leon Cordy N4503 Highway 55 ChihonWI 53014 RC Bill Fuori 28 Fernwood Dr Commack NY 11725Michigan Ill Ken Reber 427 Elm Dr Nazareth PA 18064 EastRC Wayne Yeager 38236 Castle Romulus MI 48174 M Wejsenbach4568 W 146th Cleveland0H44135 WestCL& FP Paul Smith 11112 Dill Dr. Sterling Hgts MI 48077 IVWarren SandersJr.973552nd Ave. CollegePark MD20741 VIII Randy RandolphFO8Ox271048D51155TX75227 RC Ed Byerley 200 Commander Cove Stafford VA 22554IX8i11 Bieda UNIVAC Bldg 7100 W Center Ad No420 V AC H Norckauer 12330 Chicamauga Trail Huntsville AL sha NC 68106 35803 eorge Hunter 6862 5 Lamar St. Littleton CO 80123 FF Wallace Johnson 4112 White Acres Ad Montgomery ALX James Caughran 33783 Siasbury Way Union CiyCA94587 36106 thi CL Joseph Meed 1339 Renasalser St Jacksonville FL 32205 Harry Apoian 27704 Saddle Ad Rolling Hill CA 90274 VI RC Charles Gray 201 Hulman Salem Ad.Terre Haute South IN 47803 k Gomes 2241 Noah St. Honolulu HI 96816 HI meets AC Sowing Dale Folkening 1039 College Ave No 6WXI Tom Cope 23262 SC 57th St. 3 Issaqush WA 98027 Wheaton IL 60187 AC Jamea McCarty 18968 Marine View Dr. Seattle WA 98166 AC Pylon & Soaring AC Pettwn other AC nuRC except Soaringl Sold Face Below indicates Chairnien Conteet Board INDOOR CONTEST BOARDVI Chris Malsuno 8576 Ginger Sc John MO 63114 Ray Harlan 15 Happy Hollow Rd. Wayland MA 01778VII Richard 001g 6 Canary Hill Dr. Pontiac Ml 48055 II Merrick Andrewn 100 River Rd A1 1 Bogota NJ 07603VIII AallSls IBudI Tenny Boa 546 Alcherdeoss TX 75060 Ill Walt Vanordar 5689 Victory Vet Ln. Cincinnati OH 45238 IX Stan Chiton 300 S Main Wichita KS 67202 IV Don Srull 941 Kimberwicke Ad. McLean VA 22102X Clarence Mather 3B60Ccochee Ave. San Diego CA 92117 V John Martin 2180 Tigertail Miami FL 33133XI Dave Hagen 19957 5 RedLand Rd. Oregon City OR 97045 CONTROL LINE CONTEST BOARD I George HIggins P0 Box 482 North Pembroke MA 02368 II Bill Boss 7706 269th St. New Hyde Park NY 11040 Ill Laird Jackson 1025 Walnut St. Philadelphia PA 19107 IV Ron McNally 6118 Barda Ave. Springfield VA 22152 V Dave Hemntraught P0 Box 171 Moncks Corner SC 29461 FREE FLIGHT CONTEST BOARD I Henry Struck RFD2 Hamburg Old Lyme CT 06371 II Bradley Bane 80 Lake Ave Lyndonvilla NY 14098 III Rudy Kluiber 2021 Lakeand Ave Lakewood OH 44107 IV Joe Boyle Jr 219 Shenandoah Rd. Hampton VA 23361 V Bonny Jenkins 3112 C Rain Rd Memphis TN 38118 SCALE CONTEST BOARD I Ire Seed 52 Langholm Or. Nashua NH 03060 II Robert Clemens 95 Shoreway Dr Rochester NY 14612 III edward Wisser 1521 Summit St. McKeesport PA 15131 IV Bob Karlsson 2643 Marsh Rd Wilmington DC 19810 V David Platt 6940 NW 15th Ft Lauderdale FL 33313 VI Jim Thomerson 1317 Eileen Collineville 1L62234 VII James Sinton 4941 Wisconsin N New Hope MN 55428 VIII William Lee 3522 Tamarisk Lane Missouri City TX 77459 IX Michael Tallman 3014 exchange Wichita KS 67217 X VIc Garner PG Boa 573 Livermore CA 94580 XI John Thompson 1411 Bryant Ave Cottege Grove OR 97424 VI Chris Metauno 8576 Ginger Se John MO 63114 VII Bill Shsilor35354Tall OaksSterling Hgts. MI 48077 VIII Mark Valerius 1627 Overland Pass Sugarland TX 77478 IX Jerald Murphy 2432 Astron Colorado Springs CO 80906 X Joe Norcroas P0 Box 65 Hanford CA 93232 XI Kevin Collins 2320 Sahalee Dr C Redmond WA 98052 VI John Guenther RR1 Box 715 Borden 1N47106 VII Claude McCullough AR 1 Box 487 Montezuma IA 80171 VIII Buddy Irwin 922 Sundown Ln, Dagoto TX 75115 IX Dean Copeland 7817 Seward Sc. Omaha NC 68114 X Bill Stroman 12219 Dune St. Norwalk CA 90660 XI Earle Moorhead 275S View Place S Salem OR 97302 RADIO CONTROL CONTEST BOARDS AEROBATICSVI Paul Proafrock 3989 Weber Way Lexington KY 40514 Lance Murphy 29 Hightop Cir Cast Hamden CT 06514VII Brian Crosalay 4740 Lorinda Dr. St Paul MN 68112 II Joe Friend 41 Carriage Hill Or. Colts Neck NJ 07722VIII T8A III Ron He5elbrock 6320 Bliberry Hill Cc CincinnatiOH 45248 IX Loran Tregela 3003S Everett Wichita KS 67217 IV Stacey Mills 2 Box 77 CharlOttesville VA 22901X Bill Northrop Jr 621 W 19th Costa Mesa CA 92627 V John Thomas 401 B Jackson Sc. Ste 200 Orlando FL32801 XI Charles Davenport 14415 SC 266th St. Kant WA 96031 HELICOPTER I Ernie Huber 19 Beaver Park Rd. Danvers MA 01923 II Horace Hagan 15 Parkway Fl. Red Bank NJ 07701 III Bill Curtis 218 Vernon Rd. Gr&enville PA 16125 IV Robert F Harris 700 Silver Lindan Dr La Flats MD 20648 V TBA RACING I Pete Reed 49 Anvil Dr Avon CT 06001 llAdemSattlar41 PerryAve, LathamNY121IO III Dave Lacaha 1141 Columbue Ave. Lemoyne PA 17043 IV Cliff Telford 7417 Armetood Rd Bethesda MD 20617 V Gail Jacobson 2205 Britley Tar. College Park GA 30349 VI Bob Balluomini 129 College Park Creatylew Hills KY 41017 VII Roy Dietz 12450 Lansdowne Detroit Ml 48224 VIII TBA IX Cd Cox 8209 Undan Dr PrairIe Village KS 66208 X TBA XI Jerry Holcoreb 1010 NC 122nd Ave Vancouver WA 98664 VI TBA VII Wayne Veager 38235 Castle Romulus Ml 48174 VIII TBA IX Sam Plsciotta 1525 Alexander Cir. Pueblo CO 81001 X Gary Hover 1504 18th St. Los Osos CA 93402 XI Roger Pierce 12415 52nd Ave Tacoma WA 98446 SOARINGVI Dan Pruw 131 8 Pennington Ad. Rainfiald IL 80544 Fritz Bien 41 Saw Mill Rd ConcordMA01742VIIAI ScidmoreSOl3DOruett Dr. MadisonWI 53711 II Gordon Stratton 255 Brevoort St Key Gardens NY 11415VIII TBA III Gene Shelkey 217 Euclid Ave Scottdala PA 15683IX Ray Marvin 2781 5 Garfield Denver CO 80210 IV Bob Champine 205 TiptOn Rd Newport News VA 23606X Dave Peltz 20450 Celtic St. Chatsworth CA 91311 V James Davis Jr 1813S Lakeshore Dr Birmingnam AL35216 Xl Dave Johnson 3528 NC 90th Ave Portland OR 97220 CONTEST BOARD COORDINATOR Don Undley 420 Tupelo Naperelile IL 60840 design standard model engine no New Nuts Indoor Schedule special carburetion SundayMondayTuesdayWednesdayThursdayFriday- Saturday Aug5Aug6Aug7Aug8 Aug9Aug10Aug11 IndoorIndoorA-I TowlineRocketD GasA-2 TowingMulvihill AMA Scale6HLG H/T3C GashA GasCoupe dHA GasB Gas Peanut Scale6HLG A/IN3PayloadWakefield1FAI PowerP-3DElectric CL Pennyplane2AMA Stick4Peanut ScaleHL GliderElectric CL B Easy 2Paper Stick4IndoorGas Scale Manhattan2FAI Stick1-5PAl Stickl5Rubber Scale Cab in4 Notes 1by rounds 29 am-2 pm 39 ami pm4 pm9 pm 52 pm8 pm 62 pm7 pm June 1984 117 Table 1 % Horsepower Reduction vs Temperature @ 5000 Ft Applicable Reno-Stead Power Air DensityHP AltLoss Temp Dog F RatioHPSL% 508468317 608308119 708147921 808007822 907847624 1007707426 RECORD HOLDERS RECORD HOLD No screaming climbs photo taicen moaei already 45 seconds its takeoff roll LIand will stay ground another 3-5 seconds before lifts off Builder Ramirez still kneeling launch point watching go timer Ed Lidgard officiates Once airborne RI model seen some 3-5 seconds after liftoff10-14 seconds flight Engine run limited 20 seconds official flight must return earth least 40 seconds after being released flight AMA Free Flight Cargo event faint heart Success requires lot patient experimentation model design trimming test flying Also spectacular eventunless onlooker realizes tremendous performance being coaxed out tiny engine powering mediumsized plane Contest rules event allow flier 12 attempts make three official flights time model fails become airborne after being released flight does count attempt rules allow tricks engineno re duction-gear drives permitted ex ample engine must conventional internal-combustion reciprocating type displacement less 025 cu model must carry one-ounce pilot its cargo internallyno cargo packs pods allowed model must have windows least A-in high allow dummy pilot have forward sideways visibility planes total weight ready fly must least five ounces may ex ceed 100 ounces No mechanical device added power permitted help model become airborne Although event would seem offer opportunity try unique aerodynamic designs record-holders seem always have conventional models clean design careful attention paid workmanship details such sturdy landing gear free-rolling wheels Flier Ramirez timer Lidgard both happy record performance U closer look front recordsetting model RI original design Roman Ramirezshows clean lines excellent workmanship stout landing gear Engine Cox TD 020 10021oz record represents sum gross weights model its best three official flights Average would 334 ozIf light Thats lot weight 020 get off groundi Rules limit model winasnan 48 reauire windows pilot visibility CORD HOLDERS D SPEED Open 20922 mph Don Benesch Copiague NY used OS 65 marine engine original-design Silver Bullet plane Model features cast pan sheet-metal fuselage top Prop Rev-Up 9-13 Uses Monoline control Jon Smothers Dallas TX set two records flight planea modified Pieces MA plan No 3581 Power single 154-in loop 055 Pirelli rubber Cat EASY B PAPER STICK Junior7 mm 41 sec RECORD HOLDERS RECORD HOLDERS RECORD HOLD 118 Model Aviation CARGO Open category 10021 oz Roman Ramirez September 191082 S0~00000033SoniC 23 o-003 03 0 000- 0o0 --rr-- --0 053 053053053053050 305050530530530530530530 0 1 5 0JMOOOM-ooo&- S00C0350C0005540C4M0 050-M0 ni M0wSMS~000 5 3W50 08a50tS05-SMhfl5a 0bS000 og 200040iii 000-il afla aa ga9a 0S0w00H2000StovIaxC ioa00450z &ao3 35 a324t s43aa~a1 J j a2g gj ogcO3 CS0H 523 U 2P 2 3 4 tfs%Z2Z299JM--NHMCJ 50355000000033 S or000 405Co0000 22aj i9 0 0 0 -ii o oooaoo~-oa MtotoS30t0tOtootto tJtaMO-000 tog fli t 2 co-oto o-awooooooa woojim aaaas01 S o0 c-oH -&PttIm0aff000C000ia3~I flcj as-A 0005a3C0Oa00aDO a0 a320 % 2 a-0 sH 500-a 0to00000000000JJ%05O-000 00005-O do-JoLototol0 do4ado44J4JJdo dojdodo 00to000005010J00 00000000030tot00000J505 00 50355j00000000SSmC 21o50 2~0 0 0 tO 3053053053053053053053053053053053053053053 053 gsjSi9gMMt0 totJ0000g050to00 00000000000011171 aaaaaaaaaa aar ii 0 0S0 j50005 3 5505505530555505i5o0 H waaaaaaactaaooooaoaa0 000 a23oaH F502-5 3Sr00 -4550r550 ZZ~~ZF 0003M03000J 00000000 0 tOO 000 45 Stdoqt*t304J000 jdo000000000001 dodot ljdo dododo-adododoadododo &&dododOdodo3O& 95335005t0flm01 0 -to OHiOH4Zrtc0aO0 03 t0Qfl00Q053 0 000 0 0 V500—5322H 3a -2- o 3 00 0330530tO305fr05305305fr05 0%k 0 000000000052 ZZZS Z ati a000 - 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