OF COURSE can make flying wing model fly will never competitive conventional models statement has appeared various forms several model magazines over years cant begin count number times have heard conversation As lover unconventional configurations felt prejudice should al lowed go unchallenged flying wing has several inherent advantages over conventional layout should other things being equal N aI--tend suffer several difficulties worst tendency toloop under power difficult trimming poor nonexistent stall recovery problems other power looping can traced use conventional airfoils combined wing sweep twist provide stability trim flying wing models swept flying wing very sensitive amount washout wing tips Small changes wing twist will cause large changes either turn pitch trim model makes very Modelers general stubborn lot Being told something cant done has often just impetus break out drawing board T-square author de cided prove flying wing could indeed win National Contest P-30 event EBarnaby Wainfan superior performance decided way kill prejudice develop competitive flying wing model win Nats tall order say least took four years series 10 experimental models finally arrive tailless P-30 design felt com petitive Cyrano II model victorious Open P-30 1984 Reno Nats Cyrano tailless model entered P-30 far know also pusher model entered Design philosophy tailless configu ration has several attractive features recommend rubber model first eliminating tail surfaces much work building model eliminated simply fewer parts make Cyrano wing has nine ribs flying surface cover tailless model should also efficient aerodynamically since dragging tail surfaces through air elimination tail will make model lighter allow have larger wing area given total model weight Cyrano II has 240 sq wing area huge P-30 history tailless models shows can very good performers difficult get type model consistent humidity temperature changes affect covering warps model sweep makes difficult adjust turn also affecting pitch change twist wing tip intended change turn model will also change lift wing tip affect pitch trim cross-coupling roll pitch trim makes difficult achieve good trim poor stall characteristics early tailless models can also attributed use large amounts sweep swept December1986 103 Left Lynne Wainfan holdsthe Cyrano II ourauthorwinds stage right Cyrano lawound front thetail biock prop remain place holder carefully restrains prop removable nose tail blocks make motor stuffing easy Right author launchesthe Cyrano Mile Square Park Fountain Valley CA site yearly Northrop Flying Wing Contestforwhich model originallydeveloped model should launched slightly nose upwith thewings level Both photos byDon Larsen Others byauthor wing will tend stall tips much easily unswept tip stalling tendency can cause model pitch up stall make stall very violent Contrary popular belief sweep does fake air thinking wing tips really tail sweep does increase stability airplane adds problems trimming model Several early test models complex wing shapes designed get some part wing act tail None came close performing well simple straight wing plank some completely untrimmable cant fool mother nature unswept flying plank configura tion Cyrano eliminates problems caused wing sweep Since wing swept small amounts wing twist will affect pitch trim model although wing twist will affect turn trim relatively low aspect ratio constant chord give model gentle stall characteristics center gravity CG right place Like tailless airplanes Cyrano sensitive CG nosition will to1rat tailheavy condition pitch trim planktype airplane controlled strictly airfoil position CG airfoil used Cyrano designed especially use type model Changes airfoil may seriously affect flyability model recommended power looping problem solved combining two design ideas low wing layout elevates thrust line gives model built-in downthrust earlier flying wing models noticed looping tendency showed up power burst right after launch Backing off power eliminated looping ten dency order take advantage sacrificing performance decided make Cyrano cruise-climbing model rather burst climber accomplish Cyrano uses long thin motor carrying turns shorter higher-torque motors used conventional P-30 models rate climb Cyrano high burst climbers 104 Model Aviation Left The completed wing structure shows simplicity design advantage flying wing fewer parts make wing has nine ribs no tail surfaces 1/16 sq uprights between spars help prevent spar buckling Above freewheel mechanism gadget necessary since freewheel notch commercially-avail able prop wrong side pusher Installation Note order comply unmodified prop rule P-30 com petition freewheel assembly actually glued prop Nose block detail double-ended music wire hook Wind attaching front ioop hook winder square crosspiece see text back block keys block fuselage tube takes rubber torque loads Three versions Cyrano concept small model 20-in-span Hawthorne Class Indoor ship used experi ment basic configuration center model P-30 Cyrano II larger model 300 sq experimental Mulvihill shipbasedontheCyranoconcept Reno Nats Open P-30 winner end plates 1/32 sheet balsa added experiment generated no noticeable improvement stabilityor performance Full-Size Plans Available. See Page 188 FUSELAGE FRONTV32 BALSA ROLLED TUBE FUSELAGE-SEE MOTOR WINDINGTESI HOOK FUSELAGE SIDE VIEW PLUGNYLON CLOTH I/B SO BALSACARBON FIBER LEADING EDGETOP BOTTO FUSELAGE REAR NYLON CLOTH GLUE WITH CYANOACRYLATEVR BALSA iiV - - I/B BALSA PYLON GEE BELOW LEFT NOTE GRAIN DIRECTIONI/IA BALSA RIBSFOR DETAIL MAKE SVR 1/4 BALSA TRAIUNG EDGE K CARBON FIBER TAPE TOP OF UPPER SPARI/IN BALSA BOTTOM OP LOWERRIBS SPAR V16 BALSA SHEET I/IS NO BALSAWING TIPS SPARS TOP WING ro VIEW j BOTTOM / I/BI/4 BALSA TBAILING EDGE CARBON FIBER TAPE vIA BALSA SHEET PLASTIC PROP GEE TEST ~AWM TUBE FBEE-WNEEL clUTCH PROP DETAIL power run longer Cyrano will gain much altitude under power other models will simpiy take longer get actually advantage since means time airplane must achieve glide make max lower total lack vertical fins Cyrano looks strange works An early plank test model winglet-type vertical fins wing tips model tendency spiral under power reduce tendency spiral started cut down size fins time got model flying right removed entirely have flown Cyrano small end plates wing tips seem have little effect either stability performance model Fuselage construction first part model make rolled tube fuse lage fuselage tube drying form can cut out ribs build wing Rolled tube fuselages may seem difficult make first actually much less work build conventional stick-and-tissue fuselages Start cutting out blank medi um-weight B-grain %z balsa blank should 28 long just wide enough wrap around form once form Cyrano fuselage ordinary broomstick mop handle sure straight fuselage will resemble FRONT VIEW UI23HSK banana instead part airplane After fuselage blank cut dope side full-strength clear dope dope both sides blank will refuse curl around form Doping side point serves two functions First wood will tend curl toward doped side making easier roll tube MODEL AVIATION CYRANO fl P-30 DESIGNED B DRAWN BY BARNABY WAINFAN TRACING BY JOE DEMARCO ALL RIGHTS RESERVED Second since doped side will inside finished tube dope will help keep tube becoming saturated rubber lube-as model ages After dope dry soak blank warm water least half hour Remove blank water wrap around Continued page 180 December1986 105 Pop-up P80010 aeinermaiizer usea ins istess yrano version produces oscillating stalling descent Having no tail pop up makes difficult model DT adequately DGA Designs 00 DA cc DCP Designa 0 0 S 4 S 0 0 OLiarterMaster RT BIPE QUARTER SCALE PLANS-S Quarter Master Sport Btpe0 ~fID Quadra 35. 73Span E-Z build W5 Great Flyer.Sem-Klt Availeble. PPD 0 DAVIS D1K 905 Span. ppo s25 Ouadra 35 power similar. KINNER SPORTSTER 25 Model K.117Span.035 power. eroS 0 4-CYCLE PROJECTS OW AKRON FUNK o15 SCSI 84 span 60 520 4 CyCle. FantaStIC FlyerPPD w ________0 SPPEISlS 4 0 0 ________6 5 5 4ID DAVIS D-1K 603 Span. 45 4 cycle Similar. TwO Inch Scale CrOne Sidfl SCSI 1933 KINNER SPORTSTERS* Model K.75 Span. 51-75.4 a ** Photo redced row stIr V4 SCale plan. iwo Inch scale 01 SlotS scale D0 Plane Coming PHOTO DOCUMENTATION PACKS available Scale PlanS ALL PLANS ROLLEDSHIPPED UPS Complete InstruCtIon SooltIet Send slO0 Catalog New York Slate ReeldSrltS add 7% shIes tell Send 050k MO COOS Allow 3weeke Cheok Clew U 1U 3] i [ci NTAGE Strap yourself Americas first digital fighter Follow Hornet through design testing Come board aircrsft carrier qualification weapons testing US Navy USMC Allied squadron training deployment Get Hornet handlers view cockpit move sky around See two types fighter pilots . Hornets wish did! Video Running Time 45 Minutes Specify Beta VHS Send Cheque Money Order GarDex Productions Dept T 460 Grmndvlew Ave London Oct N6K 2T5 US Canada add S3 SO ShIll add 70 P5T 5 Innlode Vsa MCIt Bank don TIcatloo N Eapiry Date Alloin 2 3 OSOkS dOlonry SNIPPED DUTY FREE INTO USA contained enough obvious errors unable improve relative po sitions field An apparent risk macho style flying small errors hard disguise takes virtually perfect pattern successful Casale finished 7th place Werwage 10th Paul Walker decided take different tack able slow down model soften pattern nearly ap proximate style judges apparently wanted see subsequent flights also scored higher finished well-deserved 3rd place Second place went Chinese mod eler Zang Xian Dong also flew very smooth rather large pattern another good job giving judges what wanted first time history Jim Walker Team Championship Trophy will engraved name nation other USA team members reacted typical way trip home could talk about get trophy back New model designs discussed very keen eye middle-of-theroad approach CLWC Combat/Perkins Continued page 102 bat definitely rewards ma turity understand cut last 10 seconds match counts much first 10 seconds think disci plined applying maturity So viets course event seems perfectly suited stoic yet fiercely proud persona seems typically Soviet Take some solid equipment add little flying skill honed state-sponsored school some luck voilaWorld Champions champion time young 19year-old named Nickolay Necheuhin quiet polite very disciplined lapse ooncentration occurred forgot wear safety helmet pitman Oleg Doroshenko about mistake well-schooled Soviets made As team didnt lose match until missing helmet fifth round Thats 14 winning flights loss Awesome Also awesome Schon Denmark 3rd Jones England 4th Ingvar Sweden 5th three par Soviet team terms skill advanced through matches little fanfare bit luck either top five could have World Champion modelers other three World Championships tend display uniformity emphasize progress through evolution Combat fliers much less constrained convention seem almost anxious revolutionary equipment hardware seen Combat field diverse always Foam balsa foam/balsa hybrid models manner configuration size powered variety engine makes tempting believe almost anything will work Just think huge foam Rudner-type models answer comparatively tiny flying wing style Pavlov Bulgaria changes mind Neat hardware tricks abound modeler tries find advantage Soviets displayed slick on-board camoperated fuel line pinching device cant lost heat battle like hemostat Detachable metal engine mounts now quite common modelers learn simple make allow adjustment nose moment balance model producing reliable engine run Oleg Doroshenkos models sported exter nal control systems seemed crude until purpose understood midair collision destroy inboard wing would end flight time simple relocation plug-in tip guide intact outboard wing would allow Olegs model relaunched allimportant air time simple brilliant idea probably will widely copied Cyrano Il/Wainfan Continued page 105 form best way to work end carefully mould wood form witheyour hands As work down tube must wrap some thing around hold broomstick dries use rubberbands since leave deep grooves wood have found best thing use ladys nylon stocking Such stockings elastic porous hold wood against form well still allow dry reasonable amount time Wrap stocking around balsa broomstick Ace bandage style work down tube finished balsa should entirely covered wrapping Let tube dry overnight Once dry can unwrapped removed broomstick use thick cyanoacrylate CyA glue adhere edges together form finished tube As shown plans ends tube must rein forced cloth inside out handle loads put ends cut keying notches ends tube until after nose tail blocks have made notches should cut match -in-sq keys end blocks should fit tightly since torque wound rubber carried keys Wing fuselage tube drying wing can built ribs made /16 balsa nine required spars s sq Assembly wing straight forward very important detail Looking plans can see n trailing edge set onto wing angle parallel bottom ribs necessary 180 Model Aviation Th 11w EmOde191uIuIeIudiSi1uir Lightest weight eMJ-te4Smt iIU81 Engines Cenlete MaUling Extra Daly 31 -$32500 34 $38000 37-$40000 42-$42000 mci Ship & Handling Christmas Special Save $7000 Option anglnaa Thsottla-oouplad spark advance *5000 Fsawee U3 glut bUrn muses net IrsupttS Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition ICH Electronics 48 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar warranty Faulty Parts Workmanship T S MDg 657 High Mountain Rda North Naledun NJ 075090291427-3645 preserve reflex airfoil trim model angle changed effect will very similar changing inci dence stab conventional model easy adjust trailing edge once wing complete careful get trailing edge angle right wing assembled Cover wing before assembling model wing Cyrano glued permanently fuselage cannot covered once place wing should covered lightweight tissue Shrink tissue rubbing alcohol rather water gives slower controlled shrinkage reduces chance warps 5on complein line] forming use two coats thinned clear dope finish wing pylon made of-in balsa has three pieces Note grain direction shown plans grain central piece oriented fore aft grain end pieces up down upright pieces should glued firmly leading trailing edge spars wing model assembled cloth reinforce ment shown junction pylon fuselage essential since distributes load over large area tube wall system has proven quite strong practice Nose prop assemblies rubber motor Cyrnao attached fuselage conventional motor dowel Instead music wire hook set nose block has winding loop its opposite end wire must glued very firmly nose block since must bear entire torque motor allow thin CyA glue flow hole along side wire both ends use epoxy fillet nose between block winding loop rubber very easy put model since no motor dowel simply drop motor through tube attach hooks nose tail blocks construction nose tail blocks conventional except -insq keys prevent blocks twisting relative fuselage under motor torque keys should made hard balsa careful cut off too short trying make flush outside tube better have keys stick out little bit have let go under full winds because sanded too short prop drive dog necessary because unmodified propeller rule Since no commercially-available plastic pusher props rule poses bit problem propeller standard PeckPolymers item must installed back wards freewheel notch tail block side against bearing drive dog made /16 plywood tube 77 dont suppose noticed Harriet George has taken up hobby December 1986 181 345.2es6NP 17B.4oZ-65HP AvabMO bW$499 95 LU Laser 209 Includes Hardware Kit b Sache 3 1 Points * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH jgg~ INTERNATIONAL AIRPLANE CATALOG OVER itt POCEO48500 MC KENZIE HWY $300VIDA OREGON 97485 TNS ~ sa & up 31tPracgsoo ToolS - SpdngflaldOtsIo 45505 IE2tc4aLCD MoRSElsj IIF2lOOUiSaIms Rd h513-322-5552 lAThES ING MACHINES EINE SHOP SUPPLIES Por oh Anloolon Model BLUEAiDGE 0/ MACHINERY AND_OOL5 INC 7 P00,, 530-VWV 2502 Non CoOokg SI305-502 3630 o200p,eoood o0froo Oorfo~doro oodqoooo NEW 4 ESIGN TAILORED HELICAL PITCH DEVELOPEOTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHELATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1266778 136778 146778 1567 16678 PRICE 299 379 479 889 989 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/i34149 634149 72833456179 8334568189 845667199 9456677199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/N279 8I 677/8 299 SERIES 4000 86/s6777289 9777289 W WIDE BLADE EW EXTRA WIDE M MADAW Now available. either aluminum brass must epoxied place freewheel notch can cut file razor saw drive dog slips over back propeller engages blades glued propeller thus complies un modified prop rule Trimming flying Cyrano easy model trim trimming tech nique little unusual Work glide first mythical tall grass available use test glide over use softest substitute possible adjust ment available trim glide pitch CG Since no tail cannot change incidence advantage tail warps incidence cannot change ruin trim model glide adjusted adding clay nose model stalls tail glides too nose-down Turn can set small rudder tab trailing edge pylon sufficient small drag tab wing tip can also used Cyrano flies left-left pattern attempt fly right will spiral time Set power turn adjusting thrust line have found small amount left thrust usually re quired get good tight stall-free climb get left thrust either place shim under right side tail block sand away little left side fuselage tail block rests small amount downthrust may necessary control power stalling Cyrano wound hooking onto wire loop nose winder holder restrains model propeller Make absolutely sure freewheel notch has engaged propeller shaft before start winding holder will treated shaft run fingers will never forget Start text flights low power work up slowly maximum winds motor Cyrano 10-gram loop -in FAI rubber important weigh motors flying Cyrano Changing motor weight will change pitch trim airplane said before tailless models quite sensitive CG shifts Cymano easy model build has contest-winning performance worth building just watch ex pressions disbelief peoples faces cruises overhead Flying wings com petitive Try RC-1 /Lanzo-Winter Continued page 110 tem rewinding electromagnet Ford cut-out relay used com bination relay rudder operator placed extended arm clapper linked rudder two control strings control gave right turn against torque actuated left turn no signal no neutral equipment mounted plane engine nmning range very shortless 100 ft problem models ignition coil acting transmitter swamping signal ground-based transmitter Too bad glow plug engines available would say RC-1 should have considered successful RC model 1934 1935 tremendous success Free Flight model oould carry additional weight receivera quality contemporary models still aim flew RC-l local flying field never entered large contests retired after bad crackup should noted radio equipment shown nostalgic project useful RC setup coherer system works key transmitter pressed down sparking coil energized sends out continuous series sparks across spark gap resulting undamped electromag netic waves imposed across tuning coil oondenser tuned frequency waves sent out over air waves antenna antenna mounted model re ceives transmitted radio waves impressed tuning coil condenser also two end caps coherer coherer tube loosely filled about 50-5 0 mixture iron silver filings frequency signal impressed iron filings become magnetized stick together action also squeezes dispersed silver filings together decreases resistance across tube ends causing electrical current flow through ac tuatorContinued page 184 182 Model Aviation THE LEADER IN COM PETITION PROPELLERS ThE WORLDS VINTAGE SAILPLANES 1908-45 Martin Simons Hard hound 176 pages quality paper 248 beautiful black white photos plus 65 color plates nearly 100 finely detailed scale drawings magnifi cent collection rare information classic old-timers SPECIAL CONCESSION OFFER FROM THE PUBLISHER ONLY avail able readers send us 2 International Reply Coupons Ask Post Office will airmail free color brochure price details tell order write now KOOKADURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 DandenonE 3175 Victoria Australia h -U I ri J
Edition: Model Aviation - 1986/12
Page Numbers: 103, 104, 105, 180, 181, 182
OF COURSE can make flying wing model fly will never competitive conventional models statement has appeared various forms several model magazines over years cant begin count number times have heard conversation As lover unconventional configurations felt prejudice should al lowed go unchallenged flying wing has several inherent advantages over conventional layout should other things being equal N aI--tend suffer several difficulties worst tendency toloop under power difficult trimming poor nonexistent stall recovery problems other power looping can traced use conventional airfoils combined wing sweep twist provide stability trim flying wing models swept flying wing very sensitive amount washout wing tips Small changes wing twist will cause large changes either turn pitch trim model makes very Modelers general stubborn lot Being told something cant done has often just impetus break out drawing board T-square author de cided prove flying wing could indeed win National Contest P-30 event EBarnaby Wainfan superior performance decided way kill prejudice develop competitive flying wing model win Nats tall order say least took four years series 10 experimental models finally arrive tailless P-30 design felt com petitive Cyrano II model victorious Open P-30 1984 Reno Nats Cyrano tailless model entered P-30 far know also pusher model entered Design philosophy tailless configu ration has several attractive features recommend rubber model first eliminating tail surfaces much work building model eliminated simply fewer parts make Cyrano wing has nine ribs flying surface cover tailless model should also efficient aerodynamically since dragging tail surfaces through air elimination tail will make model lighter allow have larger wing area given total model weight Cyrano II has 240 sq wing area huge P-30 history tailless models shows can very good performers difficult get type model consistent humidity temperature changes affect covering warps model sweep makes difficult adjust turn also affecting pitch change twist wing tip intended change turn model will also change lift wing tip affect pitch trim cross-coupling roll pitch trim makes difficult achieve good trim poor stall characteristics early tailless models can also attributed use large amounts sweep swept December1986 103 Left Lynne Wainfan holdsthe Cyrano II ourauthorwinds stage right Cyrano lawound front thetail biock prop remain place holder carefully restrains prop removable nose tail blocks make motor stuffing easy Right author launchesthe Cyrano Mile Square Park Fountain Valley CA site yearly Northrop Flying Wing Contestforwhich model originallydeveloped model should launched slightly nose upwith thewings level Both photos byDon Larsen Others byauthor wing will tend stall tips much easily unswept tip stalling tendency can cause model pitch up stall make stall very violent Contrary popular belief sweep does fake air thinking wing tips really tail sweep does increase stability airplane adds problems trimming model Several early test models complex wing shapes designed get some part wing act tail None came close performing well simple straight wing plank some completely untrimmable cant fool mother nature unswept flying plank configura tion Cyrano eliminates problems caused wing sweep Since wing swept small amounts wing twist will affect pitch trim model although wing twist will affect turn trim relatively low aspect ratio constant chord give model gentle stall characteristics center gravity CG right place Like tailless airplanes Cyrano sensitive CG nosition will to1rat tailheavy condition pitch trim planktype airplane controlled strictly airfoil position CG airfoil used Cyrano designed especially use type model Changes airfoil may seriously affect flyability model recommended power looping problem solved combining two design ideas low wing layout elevates thrust line gives model built-in downthrust earlier flying wing models noticed looping tendency showed up power burst right after launch Backing off power eliminated looping ten dency order take advantage sacrificing performance decided make Cyrano cruise-climbing model rather burst climber accomplish Cyrano uses long thin motor carrying turns shorter higher-torque motors used conventional P-30 models rate climb Cyrano high burst climbers 104 Model Aviation Left The completed wing structure shows simplicity design advantage flying wing fewer parts make wing has nine ribs no tail surfaces 1/16 sq uprights between spars help prevent spar buckling Above freewheel mechanism gadget necessary since freewheel notch commercially-avail able prop wrong side pusher Installation Note order comply unmodified prop rule P-30 com petition freewheel assembly actually glued prop Nose block detail double-ended music wire hook Wind attaching front ioop hook winder square crosspiece see text back block keys block fuselage tube takes rubber torque loads Three versions Cyrano concept small model 20-in-span Hawthorne Class Indoor ship used experi ment basic configuration center model P-30 Cyrano II larger model 300 sq experimental Mulvihill shipbasedontheCyranoconcept Reno Nats Open P-30 winner end plates 1/32 sheet balsa added experiment generated no noticeable improvement stabilityor performance Full-Size Plans Available. See Page 188 FUSELAGE FRONTV32 BALSA ROLLED TUBE FUSELAGE-SEE MOTOR WINDINGTESI HOOK FUSELAGE SIDE VIEW PLUGNYLON CLOTH I/B SO BALSACARBON FIBER LEADING EDGETOP BOTTO FUSELAGE REAR NYLON CLOTH GLUE WITH CYANOACRYLATEVR BALSA iiV - - I/B BALSA PYLON GEE BELOW LEFT NOTE GRAIN DIRECTIONI/IA BALSA RIBSFOR DETAIL MAKE SVR 1/4 BALSA TRAIUNG EDGE K CARBON FIBER TAPE TOP OF UPPER SPARI/IN BALSA BOTTOM OP LOWERRIBS SPAR V16 BALSA SHEET I/IS NO BALSAWING TIPS SPARS TOP WING ro VIEW j BOTTOM / I/BI/4 BALSA TBAILING EDGE CARBON FIBER TAPE vIA BALSA SHEET PLASTIC PROP GEE TEST ~AWM TUBE FBEE-WNEEL clUTCH PROP DETAIL power run longer Cyrano will gain much altitude under power other models will simpiy take longer get actually advantage since means time airplane must achieve glide make max lower total lack vertical fins Cyrano looks strange works An early plank test model winglet-type vertical fins wing tips model tendency spiral under power reduce tendency spiral started cut down size fins time got model flying right removed entirely have flown Cyrano small end plates wing tips seem have little effect either stability performance model Fuselage construction first part model make rolled tube fuse lage fuselage tube drying form can cut out ribs build wing Rolled tube fuselages may seem difficult make first actually much less work build conventional stick-and-tissue fuselages Start cutting out blank medi um-weight B-grain %z balsa blank should 28 long just wide enough wrap around form once form Cyrano fuselage ordinary broomstick mop handle sure straight fuselage will resemble FRONT VIEW UI23HSK banana instead part airplane After fuselage blank cut dope side full-strength clear dope dope both sides blank will refuse curl around form Doping side point serves two functions First wood will tend curl toward doped side making easier roll tube MODEL AVIATION CYRANO fl P-30 DESIGNED B DRAWN BY BARNABY WAINFAN TRACING BY JOE DEMARCO ALL RIGHTS RESERVED Second since doped side will inside finished tube dope will help keep tube becoming saturated rubber lube-as model ages After dope dry soak blank warm water least half hour Remove blank water wrap around Continued page 180 December1986 105 Pop-up P80010 aeinermaiizer usea ins istess yrano version produces oscillating stalling descent Having no tail pop up makes difficult model DT adequately DGA Designs 00 DA cc DCP Designa 0 0 S 4 S 0 0 OLiarterMaster RT BIPE QUARTER SCALE PLANS-S Quarter Master Sport Btpe0 ~fID Quadra 35. 73Span E-Z build W5 Great Flyer.Sem-Klt Availeble. PPD 0 DAVIS D1K 905 Span. ppo s25 Ouadra 35 power similar. KINNER SPORTSTER 25 Model K.117Span.035 power. eroS 0 4-CYCLE PROJECTS OW AKRON FUNK o15 SCSI 84 span 60 520 4 CyCle. FantaStIC FlyerPPD w ________0 SPPEISlS 4 0 0 ________6 5 5 4ID DAVIS D-1K 603 Span. 45 4 cycle Similar. TwO Inch Scale CrOne Sidfl SCSI 1933 KINNER SPORTSTERS* Model K.75 Span. 51-75.4 a ** Photo redced row stIr V4 SCale plan. iwo Inch scale 01 SlotS scale D0 Plane Coming PHOTO DOCUMENTATION PACKS available Scale PlanS ALL PLANS ROLLEDSHIPPED UPS Complete InstruCtIon SooltIet Send slO0 Catalog New York Slate ReeldSrltS add 7% shIes tell Send 050k MO COOS Allow 3weeke Cheok Clew U 1U 3] i [ci NTAGE Strap yourself Americas first digital fighter Follow Hornet through design testing Come board aircrsft carrier qualification weapons testing US Navy USMC Allied squadron training deployment Get Hornet handlers view cockpit move sky around See two types fighter pilots . Hornets wish did! Video Running Time 45 Minutes Specify Beta VHS Send Cheque Money Order GarDex Productions Dept T 460 Grmndvlew Ave London Oct N6K 2T5 US Canada add S3 SO ShIll add 70 P5T 5 Innlode Vsa MCIt Bank don TIcatloo N Eapiry Date Alloin 2 3 OSOkS dOlonry SNIPPED DUTY FREE INTO USA contained enough obvious errors unable improve relative po sitions field An apparent risk macho style flying small errors hard disguise takes virtually perfect pattern successful Casale finished 7th place Werwage 10th Paul Walker decided take different tack able slow down model soften pattern nearly ap proximate style judges apparently wanted see subsequent flights also scored higher finished well-deserved 3rd place Second place went Chinese mod eler Zang Xian Dong also flew very smooth rather large pattern another good job giving judges what wanted first time history Jim Walker Team Championship Trophy will engraved name nation other USA team members reacted typical way trip home could talk about get trophy back New model designs discussed very keen eye middle-of-theroad approach CLWC Combat/Perkins Continued page 102 bat definitely rewards ma turity understand cut last 10 seconds match counts much first 10 seconds think disci plined applying maturity So viets course event seems perfectly suited stoic yet fiercely proud persona seems typically Soviet Take some solid equipment add little flying skill honed state-sponsored school some luck voilaWorld Champions champion time young 19year-old named Nickolay Necheuhin quiet polite very disciplined lapse ooncentration occurred forgot wear safety helmet pitman Oleg Doroshenko about mistake well-schooled Soviets made As team didnt lose match until missing helmet fifth round Thats 14 winning flights loss Awesome Also awesome Schon Denmark 3rd Jones England 4th Ingvar Sweden 5th three par Soviet team terms skill advanced through matches little fanfare bit luck either top five could have World Champion modelers other three World Championships tend display uniformity emphasize progress through evolution Combat fliers much less constrained convention seem almost anxious revolutionary equipment hardware seen Combat field diverse always Foam balsa foam/balsa hybrid models manner configuration size powered variety engine makes tempting believe almost anything will work Just think huge foam Rudner-type models answer comparatively tiny flying wing style Pavlov Bulgaria changes mind Neat hardware tricks abound modeler tries find advantage Soviets displayed slick on-board camoperated fuel line pinching device cant lost heat battle like hemostat Detachable metal engine mounts now quite common modelers learn simple make allow adjustment nose moment balance model producing reliable engine run Oleg Doroshenkos models sported exter nal control systems seemed crude until purpose understood midair collision destroy inboard wing would end flight time simple relocation plug-in tip guide intact outboard wing would allow Olegs model relaunched allimportant air time simple brilliant idea probably will widely copied Cyrano Il/Wainfan Continued page 105 form best way to work end carefully mould wood form witheyour hands As work down tube must wrap some thing around hold broomstick dries use rubberbands since leave deep grooves wood have found best thing use ladys nylon stocking Such stockings elastic porous hold wood against form well still allow dry reasonable amount time Wrap stocking around balsa broomstick Ace bandage style work down tube finished balsa should entirely covered wrapping Let tube dry overnight Once dry can unwrapped removed broomstick use thick cyanoacrylate CyA glue adhere edges together form finished tube As shown plans ends tube must rein forced cloth inside out handle loads put ends cut keying notches ends tube until after nose tail blocks have made notches should cut match -in-sq keys end blocks should fit tightly since torque wound rubber carried keys Wing fuselage tube drying wing can built ribs made /16 balsa nine required spars s sq Assembly wing straight forward very important detail Looking plans can see n trailing edge set onto wing angle parallel bottom ribs necessary 180 Model Aviation Th 11w EmOde191uIuIeIudiSi1uir Lightest weight eMJ-te4Smt iIU81 Engines Cenlete MaUling Extra Daly 31 -$32500 34 $38000 37-$40000 42-$42000 mci Ship & Handling Christmas Special Save $7000 Option anglnaa Thsottla-oouplad spark advance *5000 Fsawee U3 glut bUrn muses net IrsupttS Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition ICH Electronics 48 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar warranty Faulty Parts Workmanship T S MDg 657 High Mountain Rda North Naledun NJ 075090291427-3645 preserve reflex airfoil trim model angle changed effect will very similar changing inci dence stab conventional model easy adjust trailing edge once wing complete careful get trailing edge angle right wing assembled Cover wing before assembling model wing Cyrano glued permanently fuselage cannot covered once place wing should covered lightweight tissue Shrink tissue rubbing alcohol rather water gives slower controlled shrinkage reduces chance warps 5on complein line] forming use two coats thinned clear dope finish wing pylon made of-in balsa has three pieces Note grain direction shown plans grain central piece oriented fore aft grain end pieces up down upright pieces should glued firmly leading trailing edge spars wing model assembled cloth reinforce ment shown junction pylon fuselage essential since distributes load over large area tube wall system has proven quite strong practice Nose prop assemblies rubber motor Cyrnao attached fuselage conventional motor dowel Instead music wire hook set nose block has winding loop its opposite end wire must glued very firmly nose block since must bear entire torque motor allow thin CyA glue flow hole along side wire both ends use epoxy fillet nose between block winding loop rubber very easy put model since no motor dowel simply drop motor through tube attach hooks nose tail blocks construction nose tail blocks conventional except -insq keys prevent blocks twisting relative fuselage under motor torque keys should made hard balsa careful cut off too short trying make flush outside tube better have keys stick out little bit have let go under full winds because sanded too short prop drive dog necessary because unmodified propeller rule Since no commercially-available plastic pusher props rule poses bit problem propeller standard PeckPolymers item must installed back wards freewheel notch tail block side against bearing drive dog made /16 plywood tube 77 dont suppose noticed Harriet George has taken up hobby December 1986 181 345.2es6NP 17B.4oZ-65HP AvabMO bW$499 95 LU Laser 209 Includes Hardware Kit b Sache 3 1 Points * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH jgg~ INTERNATIONAL AIRPLANE CATALOG OVER itt POCEO48500 MC KENZIE HWY $300VIDA OREGON 97485 TNS ~ sa & up 31tPracgsoo ToolS - SpdngflaldOtsIo 45505 IE2tc4aLCD MoRSElsj IIF2lOOUiSaIms Rd h513-322-5552 lAThES ING MACHINES EINE SHOP SUPPLIES Por oh Anloolon Model BLUEAiDGE 0/ MACHINERY AND_OOL5 INC 7 P00,, 530-VWV 2502 Non CoOokg SI305-502 3630 o200p,eoood o0froo Oorfo~doro oodqoooo NEW 4 ESIGN TAILORED HELICAL PITCH DEVELOPEOTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHELATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1266778 136778 146778 1567 16678 PRICE 299 379 479 889 989 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/i34149 634149 72833456179 8334568189 845667199 9456677199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/N279 8I 677/8 299 SERIES 4000 86/s6777289 9777289 W WIDE BLADE EW EXTRA WIDE M MADAW Now available. either aluminum brass must epoxied place freewheel notch can cut file razor saw drive dog slips over back propeller engages blades glued propeller thus complies un modified prop rule Trimming flying Cyrano easy model trim trimming tech nique little unusual Work glide first mythical tall grass available use test glide over use softest substitute possible adjust ment available trim glide pitch CG Since no tail cannot change incidence advantage tail warps incidence cannot change ruin trim model glide adjusted adding clay nose model stalls tail glides too nose-down Turn can set small rudder tab trailing edge pylon sufficient small drag tab wing tip can also used Cyrano flies left-left pattern attempt fly right will spiral time Set power turn adjusting thrust line have found small amount left thrust usually re quired get good tight stall-free climb get left thrust either place shim under right side tail block sand away little left side fuselage tail block rests small amount downthrust may necessary control power stalling Cyrano wound hooking onto wire loop nose winder holder restrains model propeller Make absolutely sure freewheel notch has engaged propeller shaft before start winding holder will treated shaft run fingers will never forget Start text flights low power work up slowly maximum winds motor Cyrano 10-gram loop -in FAI rubber important weigh motors flying Cyrano Changing motor weight will change pitch trim airplane said before tailless models quite sensitive CG shifts Cymano easy model build has contest-winning performance worth building just watch ex pressions disbelief peoples faces cruises overhead Flying wings com petitive Try RC-1 /Lanzo-Winter Continued page 110 tem rewinding electromagnet Ford cut-out relay used com bination relay rudder operator placed extended arm clapper linked rudder two control strings control gave right turn against torque actuated left turn no signal no neutral equipment mounted plane engine nmning range very shortless 100 ft problem models ignition coil acting transmitter swamping signal ground-based transmitter Too bad glow plug engines available would say RC-1 should have considered successful RC model 1934 1935 tremendous success Free Flight model oould carry additional weight receivera quality contemporary models still aim flew RC-l local flying field never entered large contests retired after bad crackup should noted radio equipment shown nostalgic project useful RC setup coherer system works key transmitter pressed down sparking coil energized sends out continuous series sparks across spark gap resulting undamped electromag netic waves imposed across tuning coil oondenser tuned frequency waves sent out over air waves antenna antenna mounted model re ceives transmitted radio waves impressed tuning coil condenser also two end caps coherer coherer tube loosely filled about 50-5 0 mixture iron silver filings frequency signal impressed iron filings become magnetized stick together action also squeezes dispersed silver filings together decreases resistance across tube ends causing electrical current flow through ac tuatorContinued page 184 182 Model Aviation THE LEADER IN COM PETITION PROPELLERS ThE WORLDS VINTAGE SAILPLANES 1908-45 Martin Simons Hard hound 176 pages quality paper 248 beautiful black white photos plus 65 color plates nearly 100 finely detailed scale drawings magnifi cent collection rare information classic old-timers SPECIAL CONCESSION OFFER FROM THE PUBLISHER ONLY avail able readers send us 2 International Reply Coupons Ask Post Office will airmail free color brochure price details tell order write now KOOKADURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 DandenonE 3175 Victoria Australia h -U I ri J
Edition: Model Aviation - 1986/12
Page Numbers: 103, 104, 105, 180, 181, 182
OF COURSE can make flying wing model fly will never competitive conventional models statement has appeared various forms several model magazines over years cant begin count number times have heard conversation As lover unconventional configurations felt prejudice should al lowed go unchallenged flying wing has several inherent advantages over conventional layout should other things being equal N aI--tend suffer several difficulties worst tendency toloop under power difficult trimming poor nonexistent stall recovery problems other power looping can traced use conventional airfoils combined wing sweep twist provide stability trim flying wing models swept flying wing very sensitive amount washout wing tips Small changes wing twist will cause large changes either turn pitch trim model makes very Modelers general stubborn lot Being told something cant done has often just impetus break out drawing board T-square author de cided prove flying wing could indeed win National Contest P-30 event EBarnaby Wainfan superior performance decided way kill prejudice develop competitive flying wing model win Nats tall order say least took four years series 10 experimental models finally arrive tailless P-30 design felt com petitive Cyrano II model victorious Open P-30 1984 Reno Nats Cyrano tailless model entered P-30 far know also pusher model entered Design philosophy tailless configu ration has several attractive features recommend rubber model first eliminating tail surfaces much work building model eliminated simply fewer parts make Cyrano wing has nine ribs flying surface cover tailless model should also efficient aerodynamically since dragging tail surfaces through air elimination tail will make model lighter allow have larger wing area given total model weight Cyrano II has 240 sq wing area huge P-30 history tailless models shows can very good performers difficult get type model consistent humidity temperature changes affect covering warps model sweep makes difficult adjust turn also affecting pitch change twist wing tip intended change turn model will also change lift wing tip affect pitch trim cross-coupling roll pitch trim makes difficult achieve good trim poor stall characteristics early tailless models can also attributed use large amounts sweep swept December1986 103 Left Lynne Wainfan holdsthe Cyrano II ourauthorwinds stage right Cyrano lawound front thetail biock prop remain place holder carefully restrains prop removable nose tail blocks make motor stuffing easy Right author launchesthe Cyrano Mile Square Park Fountain Valley CA site yearly Northrop Flying Wing Contestforwhich model originallydeveloped model should launched slightly nose upwith thewings level Both photos byDon Larsen Others byauthor wing will tend stall tips much easily unswept tip stalling tendency can cause model pitch up stall make stall very violent Contrary popular belief sweep does fake air thinking wing tips really tail sweep does increase stability airplane adds problems trimming model Several early test models complex wing shapes designed get some part wing act tail None came close performing well simple straight wing plank some completely untrimmable cant fool mother nature unswept flying plank configura tion Cyrano eliminates problems caused wing sweep Since wing swept small amounts wing twist will affect pitch trim model although wing twist will affect turn trim relatively low aspect ratio constant chord give model gentle stall characteristics center gravity CG right place Like tailless airplanes Cyrano sensitive CG nosition will to1rat tailheavy condition pitch trim planktype airplane controlled strictly airfoil position CG airfoil used Cyrano designed especially use type model Changes airfoil may seriously affect flyability model recommended power looping problem solved combining two design ideas low wing layout elevates thrust line gives model built-in downthrust earlier flying wing models noticed looping tendency showed up power burst right after launch Backing off power eliminated looping ten dency order take advantage sacrificing performance decided make Cyrano cruise-climbing model rather burst climber accomplish Cyrano uses long thin motor carrying turns shorter higher-torque motors used conventional P-30 models rate climb Cyrano high burst climbers 104 Model Aviation Left The completed wing structure shows simplicity design advantage flying wing fewer parts make wing has nine ribs no tail surfaces 1/16 sq uprights between spars help prevent spar buckling Above freewheel mechanism gadget necessary since freewheel notch commercially-avail able prop wrong side pusher Installation Note order comply unmodified prop rule P-30 com petition freewheel assembly actually glued prop Nose block detail double-ended music wire hook Wind attaching front ioop hook winder square crosspiece see text back block keys block fuselage tube takes rubber torque loads Three versions Cyrano concept small model 20-in-span Hawthorne Class Indoor ship used experi ment basic configuration center model P-30 Cyrano II larger model 300 sq experimental Mulvihill shipbasedontheCyranoconcept Reno Nats Open P-30 winner end plates 1/32 sheet balsa added experiment generated no noticeable improvement stabilityor performance Full-Size Plans Available. See Page 188 FUSELAGE FRONTV32 BALSA ROLLED TUBE FUSELAGE-SEE MOTOR WINDINGTESI HOOK FUSELAGE SIDE VIEW PLUGNYLON CLOTH I/B SO BALSACARBON FIBER LEADING EDGETOP BOTTO FUSELAGE REAR NYLON CLOTH GLUE WITH CYANOACRYLATEVR BALSA iiV - - I/B BALSA PYLON GEE BELOW LEFT NOTE GRAIN DIRECTIONI/IA BALSA RIBSFOR DETAIL MAKE SVR 1/4 BALSA TRAIUNG EDGE K CARBON FIBER TAPE TOP OF UPPER SPARI/IN BALSA BOTTOM OP LOWERRIBS SPAR V16 BALSA SHEET I/IS NO BALSAWING TIPS SPARS TOP WING ro VIEW j BOTTOM / I/BI/4 BALSA TBAILING EDGE CARBON FIBER TAPE vIA BALSA SHEET PLASTIC PROP GEE TEST ~AWM TUBE FBEE-WNEEL clUTCH PROP DETAIL power run longer Cyrano will gain much altitude under power other models will simpiy take longer get actually advantage since means time airplane must achieve glide make max lower total lack vertical fins Cyrano looks strange works An early plank test model winglet-type vertical fins wing tips model tendency spiral under power reduce tendency spiral started cut down size fins time got model flying right removed entirely have flown Cyrano small end plates wing tips seem have little effect either stability performance model Fuselage construction first part model make rolled tube fuse lage fuselage tube drying form can cut out ribs build wing Rolled tube fuselages may seem difficult make first actually much less work build conventional stick-and-tissue fuselages Start cutting out blank medi um-weight B-grain %z balsa blank should 28 long just wide enough wrap around form once form Cyrano fuselage ordinary broomstick mop handle sure straight fuselage will resemble FRONT VIEW UI23HSK banana instead part airplane After fuselage blank cut dope side full-strength clear dope dope both sides blank will refuse curl around form Doping side point serves two functions First wood will tend curl toward doped side making easier roll tube MODEL AVIATION CYRANO fl P-30 DESIGNED B DRAWN BY BARNABY WAINFAN TRACING BY JOE DEMARCO ALL RIGHTS RESERVED Second since doped side will inside finished tube dope will help keep tube becoming saturated rubber lube-as model ages After dope dry soak blank warm water least half hour Remove blank water wrap around Continued page 180 December1986 105 Pop-up P80010 aeinermaiizer usea ins istess yrano version produces oscillating stalling descent Having no tail pop up makes difficult model DT adequately DGA Designs 00 DA cc DCP Designa 0 0 S 4 S 0 0 OLiarterMaster RT BIPE QUARTER SCALE PLANS-S Quarter Master Sport Btpe0 ~fID Quadra 35. 73Span E-Z build W5 Great Flyer.Sem-Klt Availeble. PPD 0 DAVIS D1K 905 Span. ppo s25 Ouadra 35 power similar. KINNER SPORTSTER 25 Model K.117Span.035 power. eroS 0 4-CYCLE PROJECTS OW AKRON FUNK o15 SCSI 84 span 60 520 4 CyCle. FantaStIC FlyerPPD w ________0 SPPEISlS 4 0 0 ________6 5 5 4ID DAVIS D-1K 603 Span. 45 4 cycle Similar. TwO Inch Scale CrOne Sidfl SCSI 1933 KINNER SPORTSTERS* Model K.75 Span. 51-75.4 a ** Photo redced row stIr V4 SCale plan. iwo Inch scale 01 SlotS scale D0 Plane Coming PHOTO DOCUMENTATION PACKS available Scale PlanS ALL PLANS ROLLEDSHIPPED UPS Complete InstruCtIon SooltIet Send slO0 Catalog New York Slate ReeldSrltS add 7% shIes tell Send 050k MO COOS Allow 3weeke Cheok Clew U 1U 3] i [ci NTAGE Strap yourself Americas first digital fighter Follow Hornet through design testing Come board aircrsft carrier qualification weapons testing US Navy USMC Allied squadron training deployment Get Hornet handlers view cockpit move sky around See two types fighter pilots . Hornets wish did! Video Running Time 45 Minutes Specify Beta VHS Send Cheque Money Order GarDex Productions Dept T 460 Grmndvlew Ave London Oct N6K 2T5 US Canada add S3 SO ShIll add 70 P5T 5 Innlode Vsa MCIt Bank don TIcatloo N Eapiry Date Alloin 2 3 OSOkS dOlonry SNIPPED DUTY FREE INTO USA contained enough obvious errors unable improve relative po sitions field An apparent risk macho style flying small errors hard disguise takes virtually perfect pattern successful Casale finished 7th place Werwage 10th Paul Walker decided take different tack able slow down model soften pattern nearly ap proximate style judges apparently wanted see subsequent flights also scored higher finished well-deserved 3rd place Second place went Chinese mod eler Zang Xian Dong also flew very smooth rather large pattern another good job giving judges what wanted first time history Jim Walker Team Championship Trophy will engraved name nation other USA team members reacted typical way trip home could talk about get trophy back New model designs discussed very keen eye middle-of-theroad approach CLWC Combat/Perkins Continued page 102 bat definitely rewards ma turity understand cut last 10 seconds match counts much first 10 seconds think disci plined applying maturity So viets course event seems perfectly suited stoic yet fiercely proud persona seems typically Soviet Take some solid equipment add little flying skill honed state-sponsored school some luck voilaWorld Champions champion time young 19year-old named Nickolay Necheuhin quiet polite very disciplined lapse ooncentration occurred forgot wear safety helmet pitman Oleg Doroshenko about mistake well-schooled Soviets made As team didnt lose match until missing helmet fifth round Thats 14 winning flights loss Awesome Also awesome Schon Denmark 3rd Jones England 4th Ingvar Sweden 5th three par Soviet team terms skill advanced through matches little fanfare bit luck either top five could have World Champion modelers other three World Championships tend display uniformity emphasize progress through evolution Combat fliers much less constrained convention seem almost anxious revolutionary equipment hardware seen Combat field diverse always Foam balsa foam/balsa hybrid models manner configuration size powered variety engine makes tempting believe almost anything will work Just think huge foam Rudner-type models answer comparatively tiny flying wing style Pavlov Bulgaria changes mind Neat hardware tricks abound modeler tries find advantage Soviets displayed slick on-board camoperated fuel line pinching device cant lost heat battle like hemostat Detachable metal engine mounts now quite common modelers learn simple make allow adjustment nose moment balance model producing reliable engine run Oleg Doroshenkos models sported exter nal control systems seemed crude until purpose understood midair collision destroy inboard wing would end flight time simple relocation plug-in tip guide intact outboard wing would allow Olegs model relaunched allimportant air time simple brilliant idea probably will widely copied Cyrano Il/Wainfan Continued page 105 form best way to work end carefully mould wood form witheyour hands As work down tube must wrap some thing around hold broomstick dries use rubberbands since leave deep grooves wood have found best thing use ladys nylon stocking Such stockings elastic porous hold wood against form well still allow dry reasonable amount time Wrap stocking around balsa broomstick Ace bandage style work down tube finished balsa should entirely covered wrapping Let tube dry overnight Once dry can unwrapped removed broomstick use thick cyanoacrylate CyA glue adhere edges together form finished tube As shown plans ends tube must rein forced cloth inside out handle loads put ends cut keying notches ends tube until after nose tail blocks have made notches should cut match -in-sq keys end blocks should fit tightly since torque wound rubber carried keys Wing fuselage tube drying wing can built ribs made /16 balsa nine required spars s sq Assembly wing straight forward very important detail Looking plans can see n trailing edge set onto wing angle parallel bottom ribs necessary 180 Model Aviation Th 11w EmOde191uIuIeIudiSi1uir Lightest weight eMJ-te4Smt iIU81 Engines Cenlete MaUling Extra Daly 31 -$32500 34 $38000 37-$40000 42-$42000 mci Ship & Handling Christmas Special Save $7000 Option anglnaa Thsottla-oouplad spark advance *5000 Fsawee U3 glut bUrn muses net IrsupttS Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition ICH Electronics 48 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar warranty Faulty Parts Workmanship T S MDg 657 High Mountain Rda North Naledun NJ 075090291427-3645 preserve reflex airfoil trim model angle changed effect will very similar changing inci dence stab conventional model easy adjust trailing edge once wing complete careful get trailing edge angle right wing assembled Cover wing before assembling model wing Cyrano glued permanently fuselage cannot covered once place wing should covered lightweight tissue Shrink tissue rubbing alcohol rather water gives slower controlled shrinkage reduces chance warps 5on complein line] forming use two coats thinned clear dope finish wing pylon made of-in balsa has three pieces Note grain direction shown plans grain central piece oriented fore aft grain end pieces up down upright pieces should glued firmly leading trailing edge spars wing model assembled cloth reinforce ment shown junction pylon fuselage essential since distributes load over large area tube wall system has proven quite strong practice Nose prop assemblies rubber motor Cyrnao attached fuselage conventional motor dowel Instead music wire hook set nose block has winding loop its opposite end wire must glued very firmly nose block since must bear entire torque motor allow thin CyA glue flow hole along side wire both ends use epoxy fillet nose between block winding loop rubber very easy put model since no motor dowel simply drop motor through tube attach hooks nose tail blocks construction nose tail blocks conventional except -insq keys prevent blocks twisting relative fuselage under motor torque keys should made hard balsa careful cut off too short trying make flush outside tube better have keys stick out little bit have let go under full winds because sanded too short prop drive dog necessary because unmodified propeller rule Since no commercially-available plastic pusher props rule poses bit problem propeller standard PeckPolymers item must installed back wards freewheel notch tail block side against bearing drive dog made /16 plywood tube 77 dont suppose noticed Harriet George has taken up hobby December 1986 181 345.2es6NP 17B.4oZ-65HP AvabMO bW$499 95 LU Laser 209 Includes Hardware Kit b Sache 3 1 Points * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH jgg~ INTERNATIONAL AIRPLANE CATALOG OVER itt POCEO48500 MC KENZIE HWY $300VIDA OREGON 97485 TNS ~ sa & up 31tPracgsoo ToolS - SpdngflaldOtsIo 45505 IE2tc4aLCD MoRSElsj IIF2lOOUiSaIms Rd h513-322-5552 lAThES ING MACHINES EINE SHOP SUPPLIES Por oh Anloolon Model BLUEAiDGE 0/ MACHINERY AND_OOL5 INC 7 P00,, 530-VWV 2502 Non CoOokg SI305-502 3630 o200p,eoood o0froo Oorfo~doro oodqoooo NEW 4 ESIGN TAILORED HELICAL PITCH DEVELOPEOTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHELATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1266778 136778 146778 1567 16678 PRICE 299 379 479 889 989 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/i34149 634149 72833456179 8334568189 845667199 9456677199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/N279 8I 677/8 299 SERIES 4000 86/s6777289 9777289 W WIDE BLADE EW EXTRA WIDE M MADAW Now available. either aluminum brass must epoxied place freewheel notch can cut file razor saw drive dog slips over back propeller engages blades glued propeller thus complies un modified prop rule Trimming flying Cyrano easy model trim trimming tech nique little unusual Work glide first mythical tall grass available use test glide over use softest substitute possible adjust ment available trim glide pitch CG Since no tail cannot change incidence advantage tail warps incidence cannot change ruin trim model glide adjusted adding clay nose model stalls tail glides too nose-down Turn can set small rudder tab trailing edge pylon sufficient small drag tab wing tip can also used Cyrano flies left-left pattern attempt fly right will spiral time Set power turn adjusting thrust line have found small amount left thrust usually re quired get good tight stall-free climb get left thrust either place shim under right side tail block sand away little left side fuselage tail block rests small amount downthrust may necessary control power stalling Cyrano wound hooking onto wire loop nose winder holder restrains model propeller Make absolutely sure freewheel notch has engaged propeller shaft before start winding holder will treated shaft run fingers will never forget Start text flights low power work up slowly maximum winds motor Cyrano 10-gram loop -in FAI rubber important weigh motors flying Cyrano Changing motor weight will change pitch trim airplane said before tailless models quite sensitive CG shifts Cymano easy model build has contest-winning performance worth building just watch ex pressions disbelief peoples faces cruises overhead Flying wings com petitive Try RC-1 /Lanzo-Winter Continued page 110 tem rewinding electromagnet Ford cut-out relay used com bination relay rudder operator placed extended arm clapper linked rudder two control strings control gave right turn against torque actuated left turn no signal no neutral equipment mounted plane engine nmning range very shortless 100 ft problem models ignition coil acting transmitter swamping signal ground-based transmitter Too bad glow plug engines available would say RC-1 should have considered successful RC model 1934 1935 tremendous success Free Flight model oould carry additional weight receivera quality contemporary models still aim flew RC-l local flying field never entered large contests retired after bad crackup should noted radio equipment shown nostalgic project useful RC setup coherer system works key transmitter pressed down sparking coil energized sends out continuous series sparks across spark gap resulting undamped electromag netic waves imposed across tuning coil oondenser tuned frequency waves sent out over air waves antenna antenna mounted model re ceives transmitted radio waves impressed tuning coil condenser also two end caps coherer coherer tube loosely filled about 50-5 0 mixture iron silver filings frequency signal impressed iron filings become magnetized stick together action also squeezes dispersed silver filings together decreases resistance across tube ends causing electrical current flow through ac tuatorContinued page 184 182 Model Aviation THE LEADER IN COM PETITION PROPELLERS ThE WORLDS VINTAGE SAILPLANES 1908-45 Martin Simons Hard hound 176 pages quality paper 248 beautiful black white photos plus 65 color plates nearly 100 finely detailed scale drawings magnifi cent collection rare information classic old-timers SPECIAL CONCESSION OFFER FROM THE PUBLISHER ONLY avail able readers send us 2 International Reply Coupons Ask Post Office will airmail free color brochure price details tell order write now KOOKADURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 DandenonE 3175 Victoria Australia h -U I ri J
Edition: Model Aviation - 1986/12
Page Numbers: 103, 104, 105, 180, 181, 182
OF COURSE can make flying wing model fly will never competitive conventional models statement has appeared various forms several model magazines over years cant begin count number times have heard conversation As lover unconventional configurations felt prejudice should al lowed go unchallenged flying wing has several inherent advantages over conventional layout should other things being equal N aI--tend suffer several difficulties worst tendency toloop under power difficult trimming poor nonexistent stall recovery problems other power looping can traced use conventional airfoils combined wing sweep twist provide stability trim flying wing models swept flying wing very sensitive amount washout wing tips Small changes wing twist will cause large changes either turn pitch trim model makes very Modelers general stubborn lot Being told something cant done has often just impetus break out drawing board T-square author de cided prove flying wing could indeed win National Contest P-30 event EBarnaby Wainfan superior performance decided way kill prejudice develop competitive flying wing model win Nats tall order say least took four years series 10 experimental models finally arrive tailless P-30 design felt com petitive Cyrano II model victorious Open P-30 1984 Reno Nats Cyrano tailless model entered P-30 far know also pusher model entered Design philosophy tailless configu ration has several attractive features recommend rubber model first eliminating tail surfaces much work building model eliminated simply fewer parts make Cyrano wing has nine ribs flying surface cover tailless model should also efficient aerodynamically since dragging tail surfaces through air elimination tail will make model lighter allow have larger wing area given total model weight Cyrano II has 240 sq wing area huge P-30 history tailless models shows can very good performers difficult get type model consistent humidity temperature changes affect covering warps model sweep makes difficult adjust turn also affecting pitch change twist wing tip intended change turn model will also change lift wing tip affect pitch trim cross-coupling roll pitch trim makes difficult achieve good trim poor stall characteristics early tailless models can also attributed use large amounts sweep swept December1986 103 Left Lynne Wainfan holdsthe Cyrano II ourauthorwinds stage right Cyrano lawound front thetail biock prop remain place holder carefully restrains prop removable nose tail blocks make motor stuffing easy Right author launchesthe Cyrano Mile Square Park Fountain Valley CA site yearly Northrop Flying Wing Contestforwhich model originallydeveloped model should launched slightly nose upwith thewings level Both photos byDon Larsen Others byauthor wing will tend stall tips much easily unswept tip stalling tendency can cause model pitch up stall make stall very violent Contrary popular belief sweep does fake air thinking wing tips really tail sweep does increase stability airplane adds problems trimming model Several early test models complex wing shapes designed get some part wing act tail None came close performing well simple straight wing plank some completely untrimmable cant fool mother nature unswept flying plank configura tion Cyrano eliminates problems caused wing sweep Since wing swept small amounts wing twist will affect pitch trim model although wing twist will affect turn trim relatively low aspect ratio constant chord give model gentle stall characteristics center gravity CG right place Like tailless airplanes Cyrano sensitive CG nosition will to1rat tailheavy condition pitch trim planktype airplane controlled strictly airfoil position CG airfoil used Cyrano designed especially use type model Changes airfoil may seriously affect flyability model recommended power looping problem solved combining two design ideas low wing layout elevates thrust line gives model built-in downthrust earlier flying wing models noticed looping tendency showed up power burst right after launch Backing off power eliminated looping ten dency order take advantage sacrificing performance decided make Cyrano cruise-climbing model rather burst climber accomplish Cyrano uses long thin motor carrying turns shorter higher-torque motors used conventional P-30 models rate climb Cyrano high burst climbers 104 Model Aviation Left The completed wing structure shows simplicity design advantage flying wing fewer parts make wing has nine ribs no tail surfaces 1/16 sq uprights between spars help prevent spar buckling Above freewheel mechanism gadget necessary since freewheel notch commercially-avail able prop wrong side pusher Installation Note order comply unmodified prop rule P-30 com petition freewheel assembly actually glued prop Nose block detail double-ended music wire hook Wind attaching front ioop hook winder square crosspiece see text back block keys block fuselage tube takes rubber torque loads Three versions Cyrano concept small model 20-in-span Hawthorne Class Indoor ship used experi ment basic configuration center model P-30 Cyrano II larger model 300 sq experimental Mulvihill shipbasedontheCyranoconcept Reno Nats Open P-30 winner end plates 1/32 sheet balsa added experiment generated no noticeable improvement stabilityor performance Full-Size Plans Available. See Page 188 FUSELAGE FRONTV32 BALSA ROLLED TUBE FUSELAGE-SEE MOTOR WINDINGTESI HOOK FUSELAGE SIDE VIEW PLUGNYLON CLOTH I/B SO BALSACARBON FIBER LEADING EDGETOP BOTTO FUSELAGE REAR NYLON CLOTH GLUE WITH CYANOACRYLATEVR BALSA iiV - - I/B BALSA PYLON GEE BELOW LEFT NOTE GRAIN DIRECTIONI/IA BALSA RIBSFOR DETAIL MAKE SVR 1/4 BALSA TRAIUNG EDGE K CARBON FIBER TAPE TOP OF UPPER SPARI/IN BALSA BOTTOM OP LOWERRIBS SPAR V16 BALSA SHEET I/IS NO BALSAWING TIPS SPARS TOP WING ro VIEW j BOTTOM / I/BI/4 BALSA TBAILING EDGE CARBON FIBER TAPE vIA BALSA SHEET PLASTIC PROP GEE TEST ~AWM TUBE FBEE-WNEEL clUTCH PROP DETAIL power run longer Cyrano will gain much altitude under power other models will simpiy take longer get actually advantage since means time airplane must achieve glide make max lower total lack vertical fins Cyrano looks strange works An early plank test model winglet-type vertical fins wing tips model tendency spiral under power reduce tendency spiral started cut down size fins time got model flying right removed entirely have flown Cyrano small end plates wing tips seem have little effect either stability performance model Fuselage construction first part model make rolled tube fuse lage fuselage tube drying form can cut out ribs build wing Rolled tube fuselages may seem difficult make first actually much less work build conventional stick-and-tissue fuselages Start cutting out blank medi um-weight B-grain %z balsa blank should 28 long just wide enough wrap around form once form Cyrano fuselage ordinary broomstick mop handle sure straight fuselage will resemble FRONT VIEW UI23HSK banana instead part airplane After fuselage blank cut dope side full-strength clear dope dope both sides blank will refuse curl around form Doping side point serves two functions First wood will tend curl toward doped side making easier roll tube MODEL AVIATION CYRANO fl P-30 DESIGNED B DRAWN BY BARNABY WAINFAN TRACING BY JOE DEMARCO ALL RIGHTS RESERVED Second since doped side will inside finished tube dope will help keep tube becoming saturated rubber lube-as model ages After dope dry soak blank warm water least half hour Remove blank water wrap around Continued page 180 December1986 105 Pop-up P80010 aeinermaiizer usea ins istess yrano version produces oscillating stalling descent Having no tail pop up makes difficult model DT adequately DGA Designs 00 DA cc DCP Designa 0 0 S 4 S 0 0 OLiarterMaster RT BIPE QUARTER SCALE PLANS-S Quarter Master Sport Btpe0 ~fID Quadra 35. 73Span E-Z build W5 Great Flyer.Sem-Klt Availeble. PPD 0 DAVIS D1K 905 Span. ppo s25 Ouadra 35 power similar. KINNER SPORTSTER 25 Model K.117Span.035 power. eroS 0 4-CYCLE PROJECTS OW AKRON FUNK o15 SCSI 84 span 60 520 4 CyCle. FantaStIC FlyerPPD w ________0 SPPEISlS 4 0 0 ________6 5 5 4ID DAVIS D-1K 603 Span. 45 4 cycle Similar. TwO Inch Scale CrOne Sidfl SCSI 1933 KINNER SPORTSTERS* Model K.75 Span. 51-75.4 a ** Photo redced row stIr V4 SCale plan. iwo Inch scale 01 SlotS scale D0 Plane Coming PHOTO DOCUMENTATION PACKS available Scale PlanS ALL PLANS ROLLEDSHIPPED UPS Complete InstruCtIon SooltIet Send slO0 Catalog New York Slate ReeldSrltS add 7% shIes tell Send 050k MO COOS Allow 3weeke Cheok Clew U 1U 3] i [ci NTAGE Strap yourself Americas first digital fighter Follow Hornet through design testing Come board aircrsft carrier qualification weapons testing US Navy USMC Allied squadron training deployment Get Hornet handlers view cockpit move sky around See two types fighter pilots . Hornets wish did! Video Running Time 45 Minutes Specify Beta VHS Send Cheque Money Order GarDex Productions Dept T 460 Grmndvlew Ave London Oct N6K 2T5 US Canada add S3 SO ShIll add 70 P5T 5 Innlode Vsa MCIt Bank don TIcatloo N Eapiry Date Alloin 2 3 OSOkS dOlonry SNIPPED DUTY FREE INTO USA contained enough obvious errors unable improve relative po sitions field An apparent risk macho style flying small errors hard disguise takes virtually perfect pattern successful Casale finished 7th place Werwage 10th Paul Walker decided take different tack able slow down model soften pattern nearly ap proximate style judges apparently wanted see subsequent flights also scored higher finished well-deserved 3rd place Second place went Chinese mod eler Zang Xian Dong also flew very smooth rather large pattern another good job giving judges what wanted first time history Jim Walker Team Championship Trophy will engraved name nation other USA team members reacted typical way trip home could talk about get trophy back New model designs discussed very keen eye middle-of-theroad approach CLWC Combat/Perkins Continued page 102 bat definitely rewards ma turity understand cut last 10 seconds match counts much first 10 seconds think disci plined applying maturity So viets course event seems perfectly suited stoic yet fiercely proud persona seems typically Soviet Take some solid equipment add little flying skill honed state-sponsored school some luck voilaWorld Champions champion time young 19year-old named Nickolay Necheuhin quiet polite very disciplined lapse ooncentration occurred forgot wear safety helmet pitman Oleg Doroshenko about mistake well-schooled Soviets made As team didnt lose match until missing helmet fifth round Thats 14 winning flights loss Awesome Also awesome Schon Denmark 3rd Jones England 4th Ingvar Sweden 5th three par Soviet team terms skill advanced through matches little fanfare bit luck either top five could have World Champion modelers other three World Championships tend display uniformity emphasize progress through evolution Combat fliers much less constrained convention seem almost anxious revolutionary equipment hardware seen Combat field diverse always Foam balsa foam/balsa hybrid models manner configuration size powered variety engine makes tempting believe almost anything will work Just think huge foam Rudner-type models answer comparatively tiny flying wing style Pavlov Bulgaria changes mind Neat hardware tricks abound modeler tries find advantage Soviets displayed slick on-board camoperated fuel line pinching device cant lost heat battle like hemostat Detachable metal engine mounts now quite common modelers learn simple make allow adjustment nose moment balance model producing reliable engine run Oleg Doroshenkos models sported exter nal control systems seemed crude until purpose understood midair collision destroy inboard wing would end flight time simple relocation plug-in tip guide intact outboard wing would allow Olegs model relaunched allimportant air time simple brilliant idea probably will widely copied Cyrano Il/Wainfan Continued page 105 form best way to work end carefully mould wood form witheyour hands As work down tube must wrap some thing around hold broomstick dries use rubberbands since leave deep grooves wood have found best thing use ladys nylon stocking Such stockings elastic porous hold wood against form well still allow dry reasonable amount time Wrap stocking around balsa broomstick Ace bandage style work down tube finished balsa should entirely covered wrapping Let tube dry overnight Once dry can unwrapped removed broomstick use thick cyanoacrylate CyA glue adhere edges together form finished tube As shown plans ends tube must rein forced cloth inside out handle loads put ends cut keying notches ends tube until after nose tail blocks have made notches should cut match -in-sq keys end blocks should fit tightly since torque wound rubber carried keys Wing fuselage tube drying wing can built ribs made /16 balsa nine required spars s sq Assembly wing straight forward very important detail Looking plans can see n trailing edge set onto wing angle parallel bottom ribs necessary 180 Model Aviation Th 11w EmOde191uIuIeIudiSi1uir Lightest weight eMJ-te4Smt iIU81 Engines Cenlete MaUling Extra Daly 31 -$32500 34 $38000 37-$40000 42-$42000 mci Ship & Handling Christmas Special Save $7000 Option anglnaa Thsottla-oouplad spark advance *5000 Fsawee U3 glut bUrn muses net IrsupttS Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition ICH Electronics 48 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar warranty Faulty Parts Workmanship T S MDg 657 High Mountain Rda North Naledun NJ 075090291427-3645 preserve reflex airfoil trim model angle changed effect will very similar changing inci dence stab conventional model easy adjust trailing edge once wing complete careful get trailing edge angle right wing assembled Cover wing before assembling model wing Cyrano glued permanently fuselage cannot covered once place wing should covered lightweight tissue Shrink tissue rubbing alcohol rather water gives slower controlled shrinkage reduces chance warps 5on complein line] forming use two coats thinned clear dope finish wing pylon made of-in balsa has three pieces Note grain direction shown plans grain central piece oriented fore aft grain end pieces up down upright pieces should glued firmly leading trailing edge spars wing model assembled cloth reinforce ment shown junction pylon fuselage essential since distributes load over large area tube wall system has proven quite strong practice Nose prop assemblies rubber motor Cyrnao attached fuselage conventional motor dowel Instead music wire hook set nose block has winding loop its opposite end wire must glued very firmly nose block since must bear entire torque motor allow thin CyA glue flow hole along side wire both ends use epoxy fillet nose between block winding loop rubber very easy put model since no motor dowel simply drop motor through tube attach hooks nose tail blocks construction nose tail blocks conventional except -insq keys prevent blocks twisting relative fuselage under motor torque keys should made hard balsa careful cut off too short trying make flush outside tube better have keys stick out little bit have let go under full winds because sanded too short prop drive dog necessary because unmodified propeller rule Since no commercially-available plastic pusher props rule poses bit problem propeller standard PeckPolymers item must installed back wards freewheel notch tail block side against bearing drive dog made /16 plywood tube 77 dont suppose noticed Harriet George has taken up hobby December 1986 181 345.2es6NP 17B.4oZ-65HP AvabMO bW$499 95 LU Laser 209 Includes Hardware Kit b Sache 3 1 Points * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH jgg~ INTERNATIONAL AIRPLANE CATALOG OVER itt POCEO48500 MC KENZIE HWY $300VIDA OREGON 97485 TNS ~ sa & up 31tPracgsoo ToolS - SpdngflaldOtsIo 45505 IE2tc4aLCD MoRSElsj IIF2lOOUiSaIms Rd h513-322-5552 lAThES ING MACHINES EINE SHOP SUPPLIES Por oh Anloolon Model BLUEAiDGE 0/ MACHINERY AND_OOL5 INC 7 P00,, 530-VWV 2502 Non CoOokg SI305-502 3630 o200p,eoood o0froo Oorfo~doro oodqoooo NEW 4 ESIGN TAILORED HELICAL PITCH DEVELOPEOTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHELATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1266778 136778 146778 1567 16678 PRICE 299 379 479 889 989 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/i34149 634149 72833456179 8334568189 845667199 9456677199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/N279 8I 677/8 299 SERIES 4000 86/s6777289 9777289 W WIDE BLADE EW EXTRA WIDE M MADAW Now available. either aluminum brass must epoxied place freewheel notch can cut file razor saw drive dog slips over back propeller engages blades glued propeller thus complies un modified prop rule Trimming flying Cyrano easy model trim trimming tech nique little unusual Work glide first mythical tall grass available use test glide over use softest substitute possible adjust ment available trim glide pitch CG Since no tail cannot change incidence advantage tail warps incidence cannot change ruin trim model glide adjusted adding clay nose model stalls tail glides too nose-down Turn can set small rudder tab trailing edge pylon sufficient small drag tab wing tip can also used Cyrano flies left-left pattern attempt fly right will spiral time Set power turn adjusting thrust line have found small amount left thrust usually re quired get good tight stall-free climb get left thrust either place shim under right side tail block sand away little left side fuselage tail block rests small amount downthrust may necessary control power stalling Cyrano wound hooking onto wire loop nose winder holder restrains model propeller Make absolutely sure freewheel notch has engaged propeller shaft before start winding holder will treated shaft run fingers will never forget Start text flights low power work up slowly maximum winds motor Cyrano 10-gram loop -in FAI rubber important weigh motors flying Cyrano Changing motor weight will change pitch trim airplane said before tailless models quite sensitive CG shifts Cymano easy model build has contest-winning performance worth building just watch ex pressions disbelief peoples faces cruises overhead Flying wings com petitive Try RC-1 /Lanzo-Winter Continued page 110 tem rewinding electromagnet Ford cut-out relay used com bination relay rudder operator placed extended arm clapper linked rudder two control strings control gave right turn against torque actuated left turn no signal no neutral equipment mounted plane engine nmning range very shortless 100 ft problem models ignition coil acting transmitter swamping signal ground-based transmitter Too bad glow plug engines available would say RC-1 should have considered successful RC model 1934 1935 tremendous success Free Flight model oould carry additional weight receivera quality contemporary models still aim flew RC-l local flying field never entered large contests retired after bad crackup should noted radio equipment shown nostalgic project useful RC setup coherer system works key transmitter pressed down sparking coil energized sends out continuous series sparks across spark gap resulting undamped electromag netic waves imposed across tuning coil oondenser tuned frequency waves sent out over air waves antenna antenna mounted model re ceives transmitted radio waves impressed tuning coil condenser also two end caps coherer coherer tube loosely filled about 50-5 0 mixture iron silver filings frequency signal impressed iron filings become magnetized stick together action also squeezes dispersed silver filings together decreases resistance across tube ends causing electrical current flow through ac tuatorContinued page 184 182 Model Aviation THE LEADER IN COM PETITION PROPELLERS ThE WORLDS VINTAGE SAILPLANES 1908-45 Martin Simons Hard hound 176 pages quality paper 248 beautiful black white photos plus 65 color plates nearly 100 finely detailed scale drawings magnifi cent collection rare information classic old-timers SPECIAL CONCESSION OFFER FROM THE PUBLISHER ONLY avail able readers send us 2 International Reply Coupons Ask Post Office will airmail free color brochure price details tell order write now KOOKADURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 DandenonE 3175 Victoria Australia h -U I ri J
Edition: Model Aviation - 1986/12
Page Numbers: 103, 104, 105, 180, 181, 182
OF COURSE can make flying wing model fly will never competitive conventional models statement has appeared various forms several model magazines over years cant begin count number times have heard conversation As lover unconventional configurations felt prejudice should al lowed go unchallenged flying wing has several inherent advantages over conventional layout should other things being equal N aI--tend suffer several difficulties worst tendency toloop under power difficult trimming poor nonexistent stall recovery problems other power looping can traced use conventional airfoils combined wing sweep twist provide stability trim flying wing models swept flying wing very sensitive amount washout wing tips Small changes wing twist will cause large changes either turn pitch trim model makes very Modelers general stubborn lot Being told something cant done has often just impetus break out drawing board T-square author de cided prove flying wing could indeed win National Contest P-30 event EBarnaby Wainfan superior performance decided way kill prejudice develop competitive flying wing model win Nats tall order say least took four years series 10 experimental models finally arrive tailless P-30 design felt com petitive Cyrano II model victorious Open P-30 1984 Reno Nats Cyrano tailless model entered P-30 far know also pusher model entered Design philosophy tailless configu ration has several attractive features recommend rubber model first eliminating tail surfaces much work building model eliminated simply fewer parts make Cyrano wing has nine ribs flying surface cover tailless model should also efficient aerodynamically since dragging tail surfaces through air elimination tail will make model lighter allow have larger wing area given total model weight Cyrano II has 240 sq wing area huge P-30 history tailless models shows can very good performers difficult get type model consistent humidity temperature changes affect covering warps model sweep makes difficult adjust turn also affecting pitch change twist wing tip intended change turn model will also change lift wing tip affect pitch trim cross-coupling roll pitch trim makes difficult achieve good trim poor stall characteristics early tailless models can also attributed use large amounts sweep swept December1986 103 Left Lynne Wainfan holdsthe Cyrano II ourauthorwinds stage right Cyrano lawound front thetail biock prop remain place holder carefully restrains prop removable nose tail blocks make motor stuffing easy Right author launchesthe Cyrano Mile Square Park Fountain Valley CA site yearly Northrop Flying Wing Contestforwhich model originallydeveloped model should launched slightly nose upwith thewings level Both photos byDon Larsen Others byauthor wing will tend stall tips much easily unswept tip stalling tendency can cause model pitch up stall make stall very violent Contrary popular belief sweep does fake air thinking wing tips really tail sweep does increase stability airplane adds problems trimming model Several early test models complex wing shapes designed get some part wing act tail None came close performing well simple straight wing plank some completely untrimmable cant fool mother nature unswept flying plank configura tion Cyrano eliminates problems caused wing sweep Since wing swept small amounts wing twist will affect pitch trim model although wing twist will affect turn trim relatively low aspect ratio constant chord give model gentle stall characteristics center gravity CG right place Like tailless airplanes Cyrano sensitive CG nosition will to1rat tailheavy condition pitch trim planktype airplane controlled strictly airfoil position CG airfoil used Cyrano designed especially use type model Changes airfoil may seriously affect flyability model recommended power looping problem solved combining two design ideas low wing layout elevates thrust line gives model built-in downthrust earlier flying wing models noticed looping tendency showed up power burst right after launch Backing off power eliminated looping ten dency order take advantage sacrificing performance decided make Cyrano cruise-climbing model rather burst climber accomplish Cyrano uses long thin motor carrying turns shorter higher-torque motors used conventional P-30 models rate climb Cyrano high burst climbers 104 Model Aviation Left The completed wing structure shows simplicity design advantage flying wing fewer parts make wing has nine ribs no tail surfaces 1/16 sq uprights between spars help prevent spar buckling Above freewheel mechanism gadget necessary since freewheel notch commercially-avail able prop wrong side pusher Installation Note order comply unmodified prop rule P-30 com petition freewheel assembly actually glued prop Nose block detail double-ended music wire hook Wind attaching front ioop hook winder square crosspiece see text back block keys block fuselage tube takes rubber torque loads Three versions Cyrano concept small model 20-in-span Hawthorne Class Indoor ship used experi ment basic configuration center model P-30 Cyrano II larger model 300 sq experimental Mulvihill shipbasedontheCyranoconcept Reno Nats Open P-30 winner end plates 1/32 sheet balsa added experiment generated no noticeable improvement stabilityor performance Full-Size Plans Available. See Page 188 FUSELAGE FRONTV32 BALSA ROLLED TUBE FUSELAGE-SEE MOTOR WINDINGTESI HOOK FUSELAGE SIDE VIEW PLUGNYLON CLOTH I/B SO BALSACARBON FIBER LEADING EDGETOP BOTTO FUSELAGE REAR NYLON CLOTH GLUE WITH CYANOACRYLATEVR BALSA iiV - - I/B BALSA PYLON GEE BELOW LEFT NOTE GRAIN DIRECTIONI/IA BALSA RIBSFOR DETAIL MAKE SVR 1/4 BALSA TRAIUNG EDGE K CARBON FIBER TAPE TOP OF UPPER SPARI/IN BALSA BOTTOM OP LOWERRIBS SPAR V16 BALSA SHEET I/IS NO BALSAWING TIPS SPARS TOP WING ro VIEW j BOTTOM / I/BI/4 BALSA TBAILING EDGE CARBON FIBER TAPE vIA BALSA SHEET PLASTIC PROP GEE TEST ~AWM TUBE FBEE-WNEEL clUTCH PROP DETAIL power run longer Cyrano will gain much altitude under power other models will simpiy take longer get actually advantage since means time airplane must achieve glide make max lower total lack vertical fins Cyrano looks strange works An early plank test model winglet-type vertical fins wing tips model tendency spiral under power reduce tendency spiral started cut down size fins time got model flying right removed entirely have flown Cyrano small end plates wing tips seem have little effect either stability performance model Fuselage construction first part model make rolled tube fuse lage fuselage tube drying form can cut out ribs build wing Rolled tube fuselages may seem difficult make first actually much less work build conventional stick-and-tissue fuselages Start cutting out blank medi um-weight B-grain %z balsa blank should 28 long just wide enough wrap around form once form Cyrano fuselage ordinary broomstick mop handle sure straight fuselage will resemble FRONT VIEW UI23HSK banana instead part airplane After fuselage blank cut dope side full-strength clear dope dope both sides blank will refuse curl around form Doping side point serves two functions First wood will tend curl toward doped side making easier roll tube MODEL AVIATION CYRANO fl P-30 DESIGNED B DRAWN BY BARNABY WAINFAN TRACING BY JOE DEMARCO ALL RIGHTS RESERVED Second since doped side will inside finished tube dope will help keep tube becoming saturated rubber lube-as model ages After dope dry soak blank warm water least half hour Remove blank water wrap around Continued page 180 December1986 105 Pop-up P80010 aeinermaiizer usea ins istess yrano version produces oscillating stalling descent Having no tail pop up makes difficult model DT adequately DGA Designs 00 DA cc DCP Designa 0 0 S 4 S 0 0 OLiarterMaster RT BIPE QUARTER SCALE PLANS-S Quarter Master Sport Btpe0 ~fID Quadra 35. 73Span E-Z build W5 Great Flyer.Sem-Klt Availeble. PPD 0 DAVIS D1K 905 Span. ppo s25 Ouadra 35 power similar. KINNER SPORTSTER 25 Model K.117Span.035 power. eroS 0 4-CYCLE PROJECTS OW AKRON FUNK o15 SCSI 84 span 60 520 4 CyCle. FantaStIC FlyerPPD w ________0 SPPEISlS 4 0 0 ________6 5 5 4ID DAVIS D-1K 603 Span. 45 4 cycle Similar. TwO Inch Scale CrOne Sidfl SCSI 1933 KINNER SPORTSTERS* Model K.75 Span. 51-75.4 a ** Photo redced row stIr V4 SCale plan. iwo Inch scale 01 SlotS scale D0 Plane Coming PHOTO DOCUMENTATION PACKS available Scale PlanS ALL PLANS ROLLEDSHIPPED UPS Complete InstruCtIon SooltIet Send slO0 Catalog New York Slate ReeldSrltS add 7% shIes tell Send 050k MO COOS Allow 3weeke Cheok Clew U 1U 3] i [ci NTAGE Strap yourself Americas first digital fighter Follow Hornet through design testing Come board aircrsft carrier qualification weapons testing US Navy USMC Allied squadron training deployment Get Hornet handlers view cockpit move sky around See two types fighter pilots . Hornets wish did! Video Running Time 45 Minutes Specify Beta VHS Send Cheque Money Order GarDex Productions Dept T 460 Grmndvlew Ave London Oct N6K 2T5 US Canada add S3 SO ShIll add 70 P5T 5 Innlode Vsa MCIt Bank don TIcatloo N Eapiry Date Alloin 2 3 OSOkS dOlonry SNIPPED DUTY FREE INTO USA contained enough obvious errors unable improve relative po sitions field An apparent risk macho style flying small errors hard disguise takes virtually perfect pattern successful Casale finished 7th place Werwage 10th Paul Walker decided take different tack able slow down model soften pattern nearly ap proximate style judges apparently wanted see subsequent flights also scored higher finished well-deserved 3rd place Second place went Chinese mod eler Zang Xian Dong also flew very smooth rather large pattern another good job giving judges what wanted first time history Jim Walker Team Championship Trophy will engraved name nation other USA team members reacted typical way trip home could talk about get trophy back New model designs discussed very keen eye middle-of-theroad approach CLWC Combat/Perkins Continued page 102 bat definitely rewards ma turity understand cut last 10 seconds match counts much first 10 seconds think disci plined applying maturity So viets course event seems perfectly suited stoic yet fiercely proud persona seems typically Soviet Take some solid equipment add little flying skill honed state-sponsored school some luck voilaWorld Champions champion time young 19year-old named Nickolay Necheuhin quiet polite very disciplined lapse ooncentration occurred forgot wear safety helmet pitman Oleg Doroshenko about mistake well-schooled Soviets made As team didnt lose match until missing helmet fifth round Thats 14 winning flights loss Awesome Also awesome Schon Denmark 3rd Jones England 4th Ingvar Sweden 5th three par Soviet team terms skill advanced through matches little fanfare bit luck either top five could have World Champion modelers other three World Championships tend display uniformity emphasize progress through evolution Combat fliers much less constrained convention seem almost anxious revolutionary equipment hardware seen Combat field diverse always Foam balsa foam/balsa hybrid models manner configuration size powered variety engine makes tempting believe almost anything will work Just think huge foam Rudner-type models answer comparatively tiny flying wing style Pavlov Bulgaria changes mind Neat hardware tricks abound modeler tries find advantage Soviets displayed slick on-board camoperated fuel line pinching device cant lost heat battle like hemostat Detachable metal engine mounts now quite common modelers learn simple make allow adjustment nose moment balance model producing reliable engine run Oleg Doroshenkos models sported exter nal control systems seemed crude until purpose understood midair collision destroy inboard wing would end flight time simple relocation plug-in tip guide intact outboard wing would allow Olegs model relaunched allimportant air time simple brilliant idea probably will widely copied Cyrano Il/Wainfan Continued page 105 form best way to work end carefully mould wood form witheyour hands As work down tube must wrap some thing around hold broomstick dries use rubberbands since leave deep grooves wood have found best thing use ladys nylon stocking Such stockings elastic porous hold wood against form well still allow dry reasonable amount time Wrap stocking around balsa broomstick Ace bandage style work down tube finished balsa should entirely covered wrapping Let tube dry overnight Once dry can unwrapped removed broomstick use thick cyanoacrylate CyA glue adhere edges together form finished tube As shown plans ends tube must rein forced cloth inside out handle loads put ends cut keying notches ends tube until after nose tail blocks have made notches should cut match -in-sq keys end blocks should fit tightly since torque wound rubber carried keys Wing fuselage tube drying wing can built ribs made /16 balsa nine required spars s sq Assembly wing straight forward very important detail Looking plans can see n trailing edge set onto wing angle parallel bottom ribs necessary 180 Model Aviation Th 11w EmOde191uIuIeIudiSi1uir Lightest weight eMJ-te4Smt iIU81 Engines Cenlete MaUling Extra Daly 31 -$32500 34 $38000 37-$40000 42-$42000 mci Ship & Handling Christmas Special Save $7000 Option anglnaa Thsottla-oouplad spark advance *5000 Fsawee U3 glut bUrn muses net IrsupttS Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition ICH Electronics 48 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar warranty Faulty Parts Workmanship T S MDg 657 High Mountain Rda North Naledun NJ 075090291427-3645 preserve reflex airfoil trim model angle changed effect will very similar changing inci dence stab conventional model easy adjust trailing edge once wing complete careful get trailing edge angle right wing assembled Cover wing before assembling model wing Cyrano glued permanently fuselage cannot covered once place wing should covered lightweight tissue Shrink tissue rubbing alcohol rather water gives slower controlled shrinkage reduces chance warps 5on complein line] forming use two coats thinned clear dope finish wing pylon made of-in balsa has three pieces Note grain direction shown plans grain central piece oriented fore aft grain end pieces up down upright pieces should glued firmly leading trailing edge spars wing model assembled cloth reinforce ment shown junction pylon fuselage essential since distributes load over large area tube wall system has proven quite strong practice Nose prop assemblies rubber motor Cyrnao attached fuselage conventional motor dowel Instead music wire hook set nose block has winding loop its opposite end wire must glued very firmly nose block since must bear entire torque motor allow thin CyA glue flow hole along side wire both ends use epoxy fillet nose between block winding loop rubber very easy put model since no motor dowel simply drop motor through tube attach hooks nose tail blocks construction nose tail blocks conventional except -insq keys prevent blocks twisting relative fuselage under motor torque keys should made hard balsa careful cut off too short trying make flush outside tube better have keys stick out little bit have let go under full winds because sanded too short prop drive dog necessary because unmodified propeller rule Since no commercially-available plastic pusher props rule poses bit problem propeller standard PeckPolymers item must installed back wards freewheel notch tail block side against bearing drive dog made /16 plywood tube 77 dont suppose noticed Harriet George has taken up hobby December 1986 181 345.2es6NP 17B.4oZ-65HP AvabMO bW$499 95 LU Laser 209 Includes Hardware Kit b Sache 3 1 Points * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH jgg~ INTERNATIONAL AIRPLANE CATALOG OVER itt POCEO48500 MC KENZIE HWY $300VIDA OREGON 97485 TNS ~ sa & up 31tPracgsoo ToolS - SpdngflaldOtsIo 45505 IE2tc4aLCD MoRSElsj IIF2lOOUiSaIms Rd h513-322-5552 lAThES ING MACHINES EINE SHOP SUPPLIES Por oh Anloolon Model BLUEAiDGE 0/ MACHINERY AND_OOL5 INC 7 P00,, 530-VWV 2502 Non CoOokg SI305-502 3630 o200p,eoood o0froo Oorfo~doro oodqoooo NEW 4 ESIGN TAILORED HELICAL PITCH DEVELOPEOTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHELATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1266778 136778 146778 1567 16678 PRICE 299 379 479 889 989 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/i34149 634149 72833456179 8334568189 845667199 9456677199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/N279 8I 677/8 299 SERIES 4000 86/s6777289 9777289 W WIDE BLADE EW EXTRA WIDE M MADAW Now available. either aluminum brass must epoxied place freewheel notch can cut file razor saw drive dog slips over back propeller engages blades glued propeller thus complies un modified prop rule Trimming flying Cyrano easy model trim trimming tech nique little unusual Work glide first mythical tall grass available use test glide over use softest substitute possible adjust ment available trim glide pitch CG Since no tail cannot change incidence advantage tail warps incidence cannot change ruin trim model glide adjusted adding clay nose model stalls tail glides too nose-down Turn can set small rudder tab trailing edge pylon sufficient small drag tab wing tip can also used Cyrano flies left-left pattern attempt fly right will spiral time Set power turn adjusting thrust line have found small amount left thrust usually re quired get good tight stall-free climb get left thrust either place shim under right side tail block sand away little left side fuselage tail block rests small amount downthrust may necessary control power stalling Cyrano wound hooking onto wire loop nose winder holder restrains model propeller Make absolutely sure freewheel notch has engaged propeller shaft before start winding holder will treated shaft run fingers will never forget Start text flights low power work up slowly maximum winds motor Cyrano 10-gram loop -in FAI rubber important weigh motors flying Cyrano Changing motor weight will change pitch trim airplane said before tailless models quite sensitive CG shifts Cymano easy model build has contest-winning performance worth building just watch ex pressions disbelief peoples faces cruises overhead Flying wings com petitive Try RC-1 /Lanzo-Winter Continued page 110 tem rewinding electromagnet Ford cut-out relay used com bination relay rudder operator placed extended arm clapper linked rudder two control strings control gave right turn against torque actuated left turn no signal no neutral equipment mounted plane engine nmning range very shortless 100 ft problem models ignition coil acting transmitter swamping signal ground-based transmitter Too bad glow plug engines available would say RC-1 should have considered successful RC model 1934 1935 tremendous success Free Flight model oould carry additional weight receivera quality contemporary models still aim flew RC-l local flying field never entered large contests retired after bad crackup should noted radio equipment shown nostalgic project useful RC setup coherer system works key transmitter pressed down sparking coil energized sends out continuous series sparks across spark gap resulting undamped electromag netic waves imposed across tuning coil oondenser tuned frequency waves sent out over air waves antenna antenna mounted model re ceives transmitted radio waves impressed tuning coil condenser also two end caps coherer coherer tube loosely filled about 50-5 0 mixture iron silver filings frequency signal impressed iron filings become magnetized stick together action also squeezes dispersed silver filings together decreases resistance across tube ends causing electrical current flow through ac tuatorContinued page 184 182 Model Aviation THE LEADER IN COM PETITION PROPELLERS ThE WORLDS VINTAGE SAILPLANES 1908-45 Martin Simons Hard hound 176 pages quality paper 248 beautiful black white photos plus 65 color plates nearly 100 finely detailed scale drawings magnifi cent collection rare information classic old-timers SPECIAL CONCESSION OFFER FROM THE PUBLISHER ONLY avail able readers send us 2 International Reply Coupons Ask Post Office will airmail free color brochure price details tell order write now KOOKADURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 DandenonE 3175 Victoria Australia h -U I ri J
Edition: Model Aviation - 1986/12
Page Numbers: 103, 104, 105, 180, 181, 182
OF COURSE can make flying wing model fly will never competitive conventional models statement has appeared various forms several model magazines over years cant begin count number times have heard conversation As lover unconventional configurations felt prejudice should al lowed go unchallenged flying wing has several inherent advantages over conventional layout should other things being equal N aI--tend suffer several difficulties worst tendency toloop under power difficult trimming poor nonexistent stall recovery problems other power looping can traced use conventional airfoils combined wing sweep twist provide stability trim flying wing models swept flying wing very sensitive amount washout wing tips Small changes wing twist will cause large changes either turn pitch trim model makes very Modelers general stubborn lot Being told something cant done has often just impetus break out drawing board T-square author de cided prove flying wing could indeed win National Contest P-30 event EBarnaby Wainfan superior performance decided way kill prejudice develop competitive flying wing model win Nats tall order say least took four years series 10 experimental models finally arrive tailless P-30 design felt com petitive Cyrano II model victorious Open P-30 1984 Reno Nats Cyrano tailless model entered P-30 far know also pusher model entered Design philosophy tailless configu ration has several attractive features recommend rubber model first eliminating tail surfaces much work building model eliminated simply fewer parts make Cyrano wing has nine ribs flying surface cover tailless model should also efficient aerodynamically since dragging tail surfaces through air elimination tail will make model lighter allow have larger wing area given total model weight Cyrano II has 240 sq wing area huge P-30 history tailless models shows can very good performers difficult get type model consistent humidity temperature changes affect covering warps model sweep makes difficult adjust turn also affecting pitch change twist wing tip intended change turn model will also change lift wing tip affect pitch trim cross-coupling roll pitch trim makes difficult achieve good trim poor stall characteristics early tailless models can also attributed use large amounts sweep swept December1986 103 Left Lynne Wainfan holdsthe Cyrano II ourauthorwinds stage right Cyrano lawound front thetail biock prop remain place holder carefully restrains prop removable nose tail blocks make motor stuffing easy Right author launchesthe Cyrano Mile Square Park Fountain Valley CA site yearly Northrop Flying Wing Contestforwhich model originallydeveloped model should launched slightly nose upwith thewings level Both photos byDon Larsen Others byauthor wing will tend stall tips much easily unswept tip stalling tendency can cause model pitch up stall make stall very violent Contrary popular belief sweep does fake air thinking wing tips really tail sweep does increase stability airplane adds problems trimming model Several early test models complex wing shapes designed get some part wing act tail None came close performing well simple straight wing plank some completely untrimmable cant fool mother nature unswept flying plank configura tion Cyrano eliminates problems caused wing sweep Since wing swept small amounts wing twist will affect pitch trim model although wing twist will affect turn trim relatively low aspect ratio constant chord give model gentle stall characteristics center gravity CG right place Like tailless airplanes Cyrano sensitive CG nosition will to1rat tailheavy condition pitch trim planktype airplane controlled strictly airfoil position CG airfoil used Cyrano designed especially use type model Changes airfoil may seriously affect flyability model recommended power looping problem solved combining two design ideas low wing layout elevates thrust line gives model built-in downthrust earlier flying wing models noticed looping tendency showed up power burst right after launch Backing off power eliminated looping ten dency order take advantage sacrificing performance decided make Cyrano cruise-climbing model rather burst climber accomplish Cyrano uses long thin motor carrying turns shorter higher-torque motors used conventional P-30 models rate climb Cyrano high burst climbers 104 Model Aviation Left The completed wing structure shows simplicity design advantage flying wing fewer parts make wing has nine ribs no tail surfaces 1/16 sq uprights between spars help prevent spar buckling Above freewheel mechanism gadget necessary since freewheel notch commercially-avail able prop wrong side pusher Installation Note order comply unmodified prop rule P-30 com petition freewheel assembly actually glued prop Nose block detail double-ended music wire hook Wind attaching front ioop hook winder square crosspiece see text back block keys block fuselage tube takes rubber torque loads Three versions Cyrano concept small model 20-in-span Hawthorne Class Indoor ship used experi ment basic configuration center model P-30 Cyrano II larger model 300 sq experimental Mulvihill shipbasedontheCyranoconcept Reno Nats Open P-30 winner end plates 1/32 sheet balsa added experiment generated no noticeable improvement stabilityor performance Full-Size Plans Available. See Page 188 FUSELAGE FRONTV32 BALSA ROLLED TUBE FUSELAGE-SEE MOTOR WINDINGTESI HOOK FUSELAGE SIDE VIEW PLUGNYLON CLOTH I/B SO BALSACARBON FIBER LEADING EDGETOP BOTTO FUSELAGE REAR NYLON CLOTH GLUE WITH CYANOACRYLATEVR BALSA iiV - - I/B BALSA PYLON GEE BELOW LEFT NOTE GRAIN DIRECTIONI/IA BALSA RIBSFOR DETAIL MAKE SVR 1/4 BALSA TRAIUNG EDGE K CARBON FIBER TAPE TOP OF UPPER SPARI/IN BALSA BOTTOM OP LOWERRIBS SPAR V16 BALSA SHEET I/IS NO BALSAWING TIPS SPARS TOP WING ro VIEW j BOTTOM / I/BI/4 BALSA TBAILING EDGE CARBON FIBER TAPE vIA BALSA SHEET PLASTIC PROP GEE TEST ~AWM TUBE FBEE-WNEEL clUTCH PROP DETAIL power run longer Cyrano will gain much altitude under power other models will simpiy take longer get actually advantage since means time airplane must achieve glide make max lower total lack vertical fins Cyrano looks strange works An early plank test model winglet-type vertical fins wing tips model tendency spiral under power reduce tendency spiral started cut down size fins time got model flying right removed entirely have flown Cyrano small end plates wing tips seem have little effect either stability performance model Fuselage construction first part model make rolled tube fuse lage fuselage tube drying form can cut out ribs build wing Rolled tube fuselages may seem difficult make first actually much less work build conventional stick-and-tissue fuselages Start cutting out blank medi um-weight B-grain %z balsa blank should 28 long just wide enough wrap around form once form Cyrano fuselage ordinary broomstick mop handle sure straight fuselage will resemble FRONT VIEW UI23HSK banana instead part airplane After fuselage blank cut dope side full-strength clear dope dope both sides blank will refuse curl around form Doping side point serves two functions First wood will tend curl toward doped side making easier roll tube MODEL AVIATION CYRANO fl P-30 DESIGNED B DRAWN BY BARNABY WAINFAN TRACING BY JOE DEMARCO ALL RIGHTS RESERVED Second since doped side will inside finished tube dope will help keep tube becoming saturated rubber lube-as model ages After dope dry soak blank warm water least half hour Remove blank water wrap around Continued page 180 December1986 105 Pop-up P80010 aeinermaiizer usea ins istess yrano version produces oscillating stalling descent Having no tail pop up makes difficult model DT adequately DGA Designs 00 DA cc DCP Designa 0 0 S 4 S 0 0 OLiarterMaster RT BIPE QUARTER SCALE PLANS-S Quarter Master Sport Btpe0 ~fID Quadra 35. 73Span E-Z build W5 Great Flyer.Sem-Klt Availeble. PPD 0 DAVIS D1K 905 Span. ppo s25 Ouadra 35 power similar. KINNER SPORTSTER 25 Model K.117Span.035 power. eroS 0 4-CYCLE PROJECTS OW AKRON FUNK o15 SCSI 84 span 60 520 4 CyCle. FantaStIC FlyerPPD w ________0 SPPEISlS 4 0 0 ________6 5 5 4ID DAVIS D-1K 603 Span. 45 4 cycle Similar. TwO Inch Scale CrOne Sidfl SCSI 1933 KINNER SPORTSTERS* Model K.75 Span. 51-75.4 a ** Photo redced row stIr V4 SCale plan. iwo Inch scale 01 SlotS scale D0 Plane Coming PHOTO DOCUMENTATION PACKS available Scale PlanS ALL PLANS ROLLEDSHIPPED UPS Complete InstruCtIon SooltIet Send slO0 Catalog New York Slate ReeldSrltS add 7% shIes tell Send 050k MO COOS Allow 3weeke Cheok Clew U 1U 3] i [ci NTAGE Strap yourself Americas first digital fighter Follow Hornet through design testing Come board aircrsft carrier qualification weapons testing US Navy USMC Allied squadron training deployment Get Hornet handlers view cockpit move sky around See two types fighter pilots . Hornets wish did! Video Running Time 45 Minutes Specify Beta VHS Send Cheque Money Order GarDex Productions Dept T 460 Grmndvlew Ave London Oct N6K 2T5 US Canada add S3 SO ShIll add 70 P5T 5 Innlode Vsa MCIt Bank don TIcatloo N Eapiry Date Alloin 2 3 OSOkS dOlonry SNIPPED DUTY FREE INTO USA contained enough obvious errors unable improve relative po sitions field An apparent risk macho style flying small errors hard disguise takes virtually perfect pattern successful Casale finished 7th place Werwage 10th Paul Walker decided take different tack able slow down model soften pattern nearly ap proximate style judges apparently wanted see subsequent flights also scored higher finished well-deserved 3rd place Second place went Chinese mod eler Zang Xian Dong also flew very smooth rather large pattern another good job giving judges what wanted first time history Jim Walker Team Championship Trophy will engraved name nation other USA team members reacted typical way trip home could talk about get trophy back New model designs discussed very keen eye middle-of-theroad approach CLWC Combat/Perkins Continued page 102 bat definitely rewards ma turity understand cut last 10 seconds match counts much first 10 seconds think disci plined applying maturity So viets course event seems perfectly suited stoic yet fiercely proud persona seems typically Soviet Take some solid equipment add little flying skill honed state-sponsored school some luck voilaWorld Champions champion time young 19year-old named Nickolay Necheuhin quiet polite very disciplined lapse ooncentration occurred forgot wear safety helmet pitman Oleg Doroshenko about mistake well-schooled Soviets made As team didnt lose match until missing helmet fifth round Thats 14 winning flights loss Awesome Also awesome Schon Denmark 3rd Jones England 4th Ingvar Sweden 5th three par Soviet team terms skill advanced through matches little fanfare bit luck either top five could have World Champion modelers other three World Championships tend display uniformity emphasize progress through evolution Combat fliers much less constrained convention seem almost anxious revolutionary equipment hardware seen Combat field diverse always Foam balsa foam/balsa hybrid models manner configuration size powered variety engine makes tempting believe almost anything will work Just think huge foam Rudner-type models answer comparatively tiny flying wing style Pavlov Bulgaria changes mind Neat hardware tricks abound modeler tries find advantage Soviets displayed slick on-board camoperated fuel line pinching device cant lost heat battle like hemostat Detachable metal engine mounts now quite common modelers learn simple make allow adjustment nose moment balance model producing reliable engine run Oleg Doroshenkos models sported exter nal control systems seemed crude until purpose understood midair collision destroy inboard wing would end flight time simple relocation plug-in tip guide intact outboard wing would allow Olegs model relaunched allimportant air time simple brilliant idea probably will widely copied Cyrano Il/Wainfan Continued page 105 form best way to work end carefully mould wood form witheyour hands As work down tube must wrap some thing around hold broomstick dries use rubberbands since leave deep grooves wood have found best thing use ladys nylon stocking Such stockings elastic porous hold wood against form well still allow dry reasonable amount time Wrap stocking around balsa broomstick Ace bandage style work down tube finished balsa should entirely covered wrapping Let tube dry overnight Once dry can unwrapped removed broomstick use thick cyanoacrylate CyA glue adhere edges together form finished tube As shown plans ends tube must rein forced cloth inside out handle loads put ends cut keying notches ends tube until after nose tail blocks have made notches should cut match -in-sq keys end blocks should fit tightly since torque wound rubber carried keys Wing fuselage tube drying wing can built ribs made /16 balsa nine required spars s sq Assembly wing straight forward very important detail Looking plans can see n trailing edge set onto wing angle parallel bottom ribs necessary 180 Model Aviation Th 11w EmOde191uIuIeIudiSi1uir Lightest weight eMJ-te4Smt iIU81 Engines Cenlete MaUling Extra Daly 31 -$32500 34 $38000 37-$40000 42-$42000 mci Ship & Handling Christmas Special Save $7000 Option anglnaa Thsottla-oouplad spark advance *5000 Fsawee U3 glut bUrn muses net IrsupttS Muffler t ting Bolts sure Tap Smoke uretor Linkage Ignition ICH Electronics 48 Volt Ignition Pack ty Switch lt Hub stor Spark Plugs ar warranty Faulty Parts Workmanship T S MDg 657 High Mountain Rda North Naledun NJ 075090291427-3645 preserve reflex airfoil trim model angle changed effect will very similar changing inci dence stab conventional model easy adjust trailing edge once wing complete careful get trailing edge angle right wing assembled Cover wing before assembling model wing Cyrano glued permanently fuselage cannot covered once place wing should covered lightweight tissue Shrink tissue rubbing alcohol rather water gives slower controlled shrinkage reduces chance warps 5on complein line] forming use two coats thinned clear dope finish wing pylon made of-in balsa has three pieces Note grain direction shown plans grain central piece oriented fore aft grain end pieces up down upright pieces should glued firmly leading trailing edge spars wing model assembled cloth reinforce ment shown junction pylon fuselage essential since distributes load over large area tube wall system has proven quite strong practice Nose prop assemblies rubber motor Cyrnao attached fuselage conventional motor dowel Instead music wire hook set nose block has winding loop its opposite end wire must glued very firmly nose block since must bear entire torque motor allow thin CyA glue flow hole along side wire both ends use epoxy fillet nose between block winding loop rubber very easy put model since no motor dowel simply drop motor through tube attach hooks nose tail blocks construction nose tail blocks conventional except -insq keys prevent blocks twisting relative fuselage under motor torque keys should made hard balsa careful cut off too short trying make flush outside tube better have keys stick out little bit have let go under full winds because sanded too short prop drive dog necessary because unmodified propeller rule Since no commercially-available plastic pusher props rule poses bit problem propeller standard PeckPolymers item must installed back wards freewheel notch tail block side against bearing drive dog made /16 plywood tube 77 dont suppose noticed Harriet George has taken up hobby December 1986 181 345.2es6NP 17B.4oZ-65HP AvabMO bW$499 95 LU Laser 209 Includes Hardware Kit b Sache 3 1 Points * SCALE DOCUMENTATION * SCALE DRAWINGSMODEL PLANS PHOTOS BOOKS EPL A-TECH jgg~ INTERNATIONAL AIRPLANE CATALOG OVER itt POCEO48500 MC KENZIE HWY $300VIDA OREGON 97485 TNS ~ sa & up 31tPracgsoo ToolS - SpdngflaldOtsIo 45505 IE2tc4aLCD MoRSElsj IIF2lOOUiSaIms Rd h513-322-5552 lAThES ING MACHINES EINE SHOP SUPPLIES Por oh Anloolon Model BLUEAiDGE 0/ MACHINERY AND_OOL5 INC 7 P00,, 530-VWV 2502 Non CoOokg SI305-502 3630 o200p,eoood o0froo Oorfo~doro oodqoooo NEW 4 ESIGN TAILORED HELICAL PITCH DEVELOPEOTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHELATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1266778 136778 146778 1567 16678 PRICE 299 379 479 889 989 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 53/i34149 634149 72833456179 8334568189 845667199 9456677199 1045667209 106W8W209 106EW219 114677778229 115W229 11BEW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164N969 16678969 RC PYLON RACING SERIES 500 DIA PITCH PRICE 7SN 5/N279 8I 677/8 299 SERIES 4000 86/s6777289 9777289 W WIDE BLADE EW EXTRA WIDE M MADAW Now available. either aluminum brass must epoxied place freewheel notch can cut file razor saw drive dog slips over back propeller engages blades glued propeller thus complies un modified prop rule Trimming flying Cyrano easy model trim trimming tech nique little unusual Work glide first mythical tall grass available use test glide over use softest substitute possible adjust ment available trim glide pitch CG Since no tail cannot change incidence advantage tail warps incidence cannot change ruin trim model glide adjusted adding clay nose model stalls tail glides too nose-down Turn can set small rudder tab trailing edge pylon sufficient small drag tab wing tip can also used Cyrano flies left-left pattern attempt fly right will spiral time Set power turn adjusting thrust line have found small amount left thrust usually re quired get good tight stall-free climb get left thrust either place shim under right side tail block sand away little left side fuselage tail block rests small amount downthrust may necessary control power stalling Cyrano wound hooking onto wire loop nose winder holder restrains model propeller Make absolutely sure freewheel notch has engaged propeller shaft before start winding holder will treated shaft run fingers will never forget Start text flights low power work up slowly maximum winds motor Cyrano 10-gram loop -in FAI rubber important weigh motors flying Cyrano Changing motor weight will change pitch trim airplane said before tailless models quite sensitive CG shifts Cymano easy model build has contest-winning performance worth building just watch ex pressions disbelief peoples faces cruises overhead Flying wings com petitive Try RC-1 /Lanzo-Winter Continued page 110 tem rewinding electromagnet Ford cut-out relay used com bination relay rudder operator placed extended arm clapper linked rudder two control strings control gave right turn against torque actuated left turn no signal no neutral equipment mounted plane engine nmning range very shortless 100 ft problem models ignition coil acting transmitter swamping signal ground-based transmitter Too bad glow plug engines available would say RC-1 should have considered successful RC model 1934 1935 tremendous success Free Flight model oould carry additional weight receivera quality contemporary models still aim flew RC-l local flying field never entered large contests retired after bad crackup should noted radio equipment shown nostalgic project useful RC setup coherer system works key transmitter pressed down sparking coil energized sends out continuous series sparks across spark gap resulting undamped electromag netic waves imposed across tuning coil oondenser tuned frequency waves sent out over air waves antenna antenna mounted model re ceives transmitted radio waves impressed tuning coil condenser also two end caps coherer coherer tube loosely filled about 50-5 0 mixture iron silver filings frequency signal impressed iron filings become magnetized stick together action also squeezes dispersed silver filings together decreases resistance across tube ends causing electrical current flow through ac tuatorContinued page 184 182 Model Aviation THE LEADER IN COM PETITION PROPELLERS ThE WORLDS VINTAGE SAILPLANES 1908-45 Martin Simons Hard hound 176 pages quality paper 248 beautiful black white photos plus 65 color plates nearly 100 finely detailed scale drawings magnifi cent collection rare information classic old-timers SPECIAL CONCESSION OFFER FROM THE PUBLISHER ONLY avail able readers send us 2 International Reply Coupons Ask Post Office will airmail free color brochure price details tell order write now KOOKADURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 DandenonE 3175 Victoria Australia h -U I ri J