coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility
Edition: Model Aviation - 1989/12
Page Numbers: 92, 93, 94, 95, 96, 192, 196, 197
coPrs S 1~ vinfler rat ana ion IT1ON thThe cut agre held Fenuent planti ng Field nearPylon anevent withoui site exempicated alor ould cons held nt fr n trimmed hroi 92 Model Aviation NO OCR TEXT superuly hand-crafti anlel Grabers Swil Bernard Sitar pi ijE lnnsbruck precision IT s white-and- main rotor fo iorIi van US te Aviation Joseph wona er u whil iS team ml Fo Robert Ii hoonards LI place nbourg Kit .n Graupner iuufl com,.% Patrick tiles Fiberglass fuselage rotor cks chopper handme4e rk can get e road success wasnt Japanese Modelers through mized financed team afterward did step heavily back t5 Rsbi 20 years Japanese National Chatp winner 1987 Doba ma Kazayuki Sensui National Champion hmplOIlI icuver X-Cel Robert opter Hi New lips Alan tor betvu poIic 1988 w o I98 nd haxnp mode bi dio q starte e co 17 r tat pra S goo 1967 icha mnsmitter anc lund artrng ere am eac m rating cc rs am aiw Left Geoff Woodwar green pants Gec awn-design fiberglass-I le placed 966 n mica Jan L C Il Cr wore matching whIte Netherlands wi Dutch Champic drank eeded rir luncnes de shared 10 cuos w hours shed under chest filled f munchit other mm No paid fact c own bills t nearly ulr fare hote caller his~ trial wini ri chani ritish cc some rganizai sub rw travel fees ur ng opter te alone did superb job As far could const 2 care little pi king sco le Schoona co s heipec pilots P i trig od-a F ry hov rs i otation o 10 point scores thrown out three judges d ere Ip 96 CULPEPPER Z MODELS INC 2526 Washington DbtaqueIA 52001 3191583-4830 well-manicured grassy areas between around runways taxiways weather cooperated nicely help provide good flying conditions Although air very hot humid mostly calm free rain eight days straight Dark clouds some wind final Sunday threatened put damper events end clouds veered off final award ceremonies held during calm sunset dark last day field empty except tents portable toilets trash cans tables chairs returned rental companies field clean AerOlympics overa grand success happy event Nearly hundred volunteer workers made happen anchored AMA Head quarters crew 10 key people HQ staff provided support services registra tion lodging transportation assistance fi nancial control score verification other details Just Nats daily newspaper produced via sophisticated desktop pub lishing system hardworking volunteers labored late night Computers tabulated scores three events verified another computer HQ also used great assortment other high-tech equipment Fentress cellular phones calling locally long distance hand-held radios base stations com munications frequency scanners spec trum analyzer RC signal monitoring photocopies results reproduction sound measuring instruments record noise levels An exemplar professional talents ap plied world-class aeromodeling compe tition AerOlympics II unquestionably boosted stature AMA aero modeling US workers best best jobs assigned Most contributed time talents exchange nightly hotel room reward feeling great pride achievement AerOlympics II among biggest best World Championships annals FAI Federation Aeronautique Interna tionale traveled cor ners world participate paid us tributes caliber organization accomplishment reflected con test can bask glow ac colades RC Helicopter WC/Wang Continued page 96 cans used about 1600 1700 rpm same maneuvers Youngblood used 1800 rpm Europeans other hand used low rpm hover higher speeds forward flight Daniele Graber Switz erland dropped low 1100 rpm hov er kicked up 1900 rpm forward flight Graber way flying expensive ship championships Si tar Special designed famous Sitar Blade designer Bernard Sitar professor fluid dynamics Innsbruck University Austria crafts parts Si tar kit himself home Expect see special report Sitars newest bearingless main rotor design future Methods supporting transmitters also varied good deal among fliers different countries None Japanese used neck straps trays flew thumbs Europeans used bulky trays extra-long sticks US pilots used simple neck strap operated controls thumb index fingers Americans Europeans used 10-to20%-nitro fuel almost always employed tuned pipe exhaust system Japanese used 30%-nitro MG lOOOF fuel costs about 7000 yen per gallon Japan Thats equivalent $4859 current rate exchange fuel such quality its no small wonder Japanese can get away standard muffler Still another difference observed contest Japanese prefer ringed en gines Americans Europeans seem favor ABC engines Unfortunately Japanese including team manager could speak English getting infor mation wasnt easy Japanese pilots excelled hover ing maneuvers Dobashi s tail-into-thewind takeoff smooth almost looked cocky Heres worked contestant after completing horizontal eight maneuver would walk other side hovering box start nose-in circle maneuver Helicop ters nose facing wind Doba shi stood simply ro tated Helicopter 1800 ground started nose-in circle maneuver tail wind made things little difficult him seemed have no ill effect performanceand showed solid preparation Japanese pilots way would al ways bow judges after rounds very nice gesture seems likely prestige surround ing well-established pilots makes difficult judges remain completely impar tial certain amount specula tion part onlookers whether some judges showed bias big name fliers performed rounds case top pilots like Heim Young blood Gorham Dobashi Sensui Ishika wa Schoonard etc air crowd behind flight line always swelled Youngbloods Gorhams hovering maneuvers executed very differently Japanese style Due lower rotor rpm softer teetering main rotors less sensitive control setups heavier Hiller paddles Japanese ships responded slowly making hovering maneuvers very smooth model drifted off course correction though quite smooth looking took longer what American pi lots used seeing windy days hovering maneuvers would describe smooth wavelike path contrast two Americans preferred high rpm stiff main rotor head setting broad quick response using light pad dles drift corrected instan taneously hovering maneuvers main tained excellent constant-height control discrete correctionswere easily discern ible wind picked up two 360 9pirouettes during top hat maneuver sepa rated men boys Executing slow constant-altitude pirouette about sin gle axis 10-to-iS-mph wind triv ial matter Collective cyclic tail rotor commands needed varied simultane ously response constantly changing relative wind direction making pir ouettes truly test piloting proficiency calmer wind task becomes far simpler afternoon wind subsided some what gradually dying down flat calm evening allow starting der 41 contestants shifted back 10 people day pilot taste morning wind some point contest couldnt eliminate luck draw entirely According Mike Robins official timekeep ers time Dutch team came up Continued page 196 192 Modei Aviation AR Fs Are Hard Fly Nothing Flies Like Wood Kit Weve got COMPLETELY BUILT wood kit stock red ready engine radio Call PHIL GOOD 215-741-0433 COD. VISA MasterCad rs/day 7 days/wk Pice ModelEnaine SireIConpletely aelti Seoo TeIenebe90 120$575 Gea$ PItoo Trooe40$450 Groe Plans Tare 00 $470 Geat Plarros Cheopree 4$ $400 Great Plarres laos 4$ $510 talsa USA Cob 14 Scalol90 1200595 Goldbeg Eagle II 40 $375 Balsa USA Phantoc IBreel 9$ $525 Si9 Kade 4$ $390 Srg Krg Cobra 9$ 049$ Sig Cob 4$ $450 Call early guaranteed delIvery Christmas Duracraft Inc / 1007 Orchard Grove Onve Royal Oak Ml 48067 DuraPlane IlThe trainer rugged enough teach entire club fly Tell hobby shop owner want see toughest model aiplane money can buy fly wind calmed down black magic would kick up again soon Len Mounts turn came round forward flight maneuvers showcased engine power fuselage aerodynamic de sign fact its rumored interna tional-level F3C contests judges down grade contestant using scale semiscale fuselage 41 contestants em ployed fiberglass fuselages single exception Kari Parokka Finland used stock pod-and-boom Schiuter Cham pion Nearly half contestants used Bell Jet Ranger body shape Australian team used Schoonards Quick Silver fuse lage Heim Luxembourg team used Heims Lockheed 286 banana-shape fuse lage Ishikawa Bell 222 re tractable landing gear Sensuis Dobashis fiberglass fuse lages very exotic looking two machines sporting finlike structure supposedly gave arrowlike straightaway flight characteristics Sensuis Helicopter equipped Kalt mechanics featured weblike fins tween landing skid fuselage also ship competition belt-drive tail rotor Dobashis Heli copter Hirobo mechanics Koruka wa black body fuselage sharklike fins sides fat fins also served air intakes engine muffler cooling Korukawa fuselage costs about 126000 yen about $874 Japan prepainted fiberglass shell alone As engines 41 contestants experienced problems aware of power plants apparently very healthy Though sounded quite tame hover maneuvers began 45 climbout four aerobatic ma neuvers engines appeared kick afterburners typical level cruising speed before choppers commenced roll loop stall turn rolling stall turn about 60 mph Model Helicopters capable execut ing much nicer rolls full-size ships such Westland Lynx Aerospatial Panther Apache AH-64 fullsize craft like rolls closer bar rel roll axial secret stretching out nice axial roll model fly ing forward speed Lacking propeller Helicopters depend momentum carry through roll Tim Schoonard executed some beautiful three-second slow rolls Youngblood s rolls level axial quite beautiful watch Many-time national German cham pion Ewald Heims rolls also good look overly fast Most Euro peans contest fact executed rolls too quickly Some pilots flew way out did fullspeed runup set up aerobatic ma neuver Others simply executed wingover turn dived down gain airspeed could generally deduce pilots expe rience level counting passes needed set up next maneuver Heim veteran competitor performed maneuver pass after four passes finished ready fi nal autorotation Robert Gorham revealed performs slow roll right applying left tail rotor 900 position adding slight amount forward stick upside down keep nose up finally putting some right tail rotor stick 2700 posi tion high idle remains activated throughout maneuver collective pitch reduced very slightly below zero inverted position addition Gor ham does use ATS tail rotor compensa tion Len Mount other hand com mented usually reduces collec tive pitch zero before entering roll correctly executed F3C loop always joy watch Curtis loops superbly executed Jet Ranger hauled nicely over top what appeared effortless motion As nears end loop Hel icopter will often make snorting noise called blade slap caused rotor blades encountering trailed vortices left previous blade revolutions Judges some times deduct points blade slap since noise caused aerodynamic phenom ena outside pilots control opin ion policy may unreasonable ever noise can reduced slightly using swept-tip main rotor blades Len Mount said trailing edge tab fiber glass blades also reduces noise In-flight needle valve adjustment uti lized Tim Schoonards Len Mounts machines Len said during fourth round top loop heard Rossi engine sag richen just slightly complete loop stall ing main rotor Aerobatics generate significant amount unsteady aerodynamics varies pitching moment tremendously un steady loads constantly transmit themselves back control bellcranks servo arms uncorrected after short period time causes slop buildup thus de tracts hover maneuvers Curtis Youngbloods GMP Competitor few Helicopters con test used collective pitch pushpull control setup cyclics designed combat problem slop buildup pitch roll controls have two pushrods connect straight bellcrank sup ported two ball bearings single pushrod links bellcrank swashplate control removes slop mini mizes loads exerted servo first World Champion Shigetada Taya also push-pull controls A- 109 equipped TSK mechanics Jet Ranger think its excellent idea should corporated high-quality machines As befits much younger discipline F3C Helicopter aerobatics significantly less complex F3A Pattern aerobatics lieve Helicopter models pilots capable complex maneuvers next decade will likely see F3C maneuvers progress include perhaps consecutive loops rolls Cuban eights present-day F3A itinerary Model Helicopters radios engines ac cessories getting better better year rolling stall turn maneuver benefits todays sophisticated choppers definitely demands penetrat ing machine Helicopter must fly verti cally half roll continue pen etrating straight up before finishing l80 stall turn According Gorham maneuver re quires overall center-of-gravity high up near main rotor possible However high center-of-gravity reduces static stability may hurt hovenng maneuvers Graupner/Heim Helicopters known perform some best roll ing stall turns because engine mounted higher other models Ewald Heims rolling stall turn fourth round however didnt go straight up cocked side causing roll less 1800 fact several con testants infected inability go straight up Several pilots difficulty 5400 stall turn well apparently undershooting maneuver flying too conservatively 196 Model Aviation LOW WING SHARKLT$9295 LSHOULDER WING SHARKST$8495 bogln 40 65Onotity Bolno & HOdwa LecoTh 445 tOFonolog & Wino PnBoi Wing SPan 60 ICOoiok AnnobIy Weight 4 55 Lb. LT 65 LbMachIne Cot & Sanded Wing Loeding 18 22 00Enoolnot Flyer Wing AeaST50ST65OeO 0Deato lenairen Weloorna ICVISA-AMEO Aconoted TX RS Add 8% Tan WRITE OR CAIL FOR FREE CATALOG OR TO PLACE ORDER KINGSWAY ENTERPRISES 18006217783R/C AIRCRAFT AND HOBBY SUPPLY STORE 5559 RICHMOND HOUSTON TX 77056 FLY pmvmiasin FUEL FROM KINGSWAY appeared hesitate millisecond about 5100 continued rotate through last 300 Half pilots pulling up wind other half pulling up downwind Generally pullup wind gradual seems allow Helicopter climb higher 1800 engine-off autorotation clear test pilot skill Round 3 Tom Dooley did best engine-off 1800 maneuvers Ive ever seen locked solid 2075 points flight maneuver also revealed fliers blade inertia lower friction drive system blades used ranged tween 180 220 grams Over half contestants tail rotor drive maintain tail rotor control during descent surprised find contes tants used expensive fiberglass blades pilots including Tim Schoonard Tom Dooley Curtis Youngblood entire Japanese team used all-wood blades Europeans apparently alone preferring fiberglass Nearly half contes tants however employed parabolic-style swept-tip blades Tim modified wood X Cell blades include small amount tip sweep panoply aircraft techniques equipment third F3C World Champion ships fascinating place Teams over world came together share week competition camarade rie Japanese team particular won admiration its high level profes sionalism Americans think everyone joined cheering would agree earned highest re spect putting best foot forward Im alone hoping fliers bring back first place 1991 Italy RC Pylon WC/Yeager Continued page 104 accurate illustrate nice conditions Round 9 Shadel bet tered earlier time new world rec ord 1113 understand changed new tuned pipe used prior meet obviously worked very well Round 9 also point contest allows dropping contestants sec ond worst score dramatically changed standings US team still ex cellent shape Individually however Bruce de Chastel Australia started meet two straight zeros able drop both jumped 17th end Round 8 very top after Round 9 total 5329 followed very closely Jett 5330 Shadel 5333a total difference fourtenths point between top three guys Unbelievable As wasnt enough drama Richmond 5352 two seconds off pace closely followed Hovers 5440 could know would win Kz ARR0W V 184T0CXA 9 Computer Ingenuity Intended serious flyer PCM 9 offers few compromises some novative features have changed standards radio systems will judged transmitter has look andfeel high performance no nonsense piece equipment control sticks supported two ball bearings axis movement adjustable length Frequencies can quickly changed swapping modules servo direction travel adjustable nine channels direct servo controller allows operation radio ground someone else uses same frequency Both pattern helicopter versions have programmable fail safe systems use 1991 ready PCM ABC&W receivers Both versions come four 4001 servos rechargeable transmitter airborne batteries full servo mounting hardware switch harness Available now through local hobby dealer JJqflff7fl$ yesterdays prices Distributed Hobby Dynamics Distributors e 1-800-458-0241 PO Box 3726 Champaign IL 61826-3726 FAX 1-217-355-0058 December 1989 197 Analog Flexibility