Radio Control: Soaring

RADIO CONTROL SOARING HAND-LAUNCH GLIDER HLG purest form RC Soaring spurns complicated launch equipment leaves airplane air provides unparalleled opportunity see model flight see results control inputs learn read air HLGs smallest can least expensive thermai sailplanes feeling launching thermal riding upward until sailplane speck sky greatest kicks model sailplane flight Since distinguishing characteristic hand-launch sailplane simply 15meter 60-inch wingspan limit construction materials methods vary HLG wings may built up sticks sheet may foam cores sheeted balsa obechi fiberglass carbon fiber Fuselages may wood composite pod-and-boom fully shaped Tailplanes conventional T-shape V-shape Control systems follow larger RC sailplane practice Two-channel polyhedral models rudder elevator common because light require simpler less expensive radio equipment four-channel transmitter mini receiver pair mini- microservos will Like other Soaring classes sophistication increases rapidly also see full house aileron HLGs four servos computer radios mix aileron rudder provide spoilerons glidepath control reflex launch preset Current HLG designs strive 12-14 ounces all-up weight HLGs can go down 10 ounces less models begin get noticeably delicate suffer limited receiver-battery life become too light launch well 15-16 ounces airplane too heavy throw hang-time suffers used call 60-inch 16-ounce airplanes HLGs now call lightair slopers Although low cost small size may attractive beginners feel HLGs well suited new sailplane pilots have know fly pretty well put sailplane small thermals found near ground stay Otherwise youll have short flights 15-20 seconds can discouraging beginners think beginners benefit other launching methods give longer flights stick-time master basics Flying HLG generally means making landings sailplane can get pretty beat up until youve developed competence landing youve mastered basics RC sailplane flight however youll learn fast HLG Because youre closer airplane can easily see what its doing reaction air its flying through Dave Thornburg taught us learn lot about plane yourself below fifty feet above fifty feet Since get plenty landing practice landing precision bound improve Whether use notch up contest scores just save wear tear old feet shooting 50 landings flying session sure gives chance improve accuracy smoothness techniques HLG flight competition design thermal finding call four advanced HLG pilots Steve Cameron Washington Fred Mallett Chris Boultinghouse Texas Gordon Jennings California Steve Cameron After won HLG 1995 Nats asked Steve advice HLG pilots good thing about HLG can fly anywhere HLG everyone dont need lot strength secret coordination movement want put 200 pounds body fingertip critical thing HLG must have maneuverability secret HLG design have light airplane Light wingtips especially important turning simple solution getting better fly much can fly 45 minutes day Fly conditions high wind low wind no wind After become familiar airplane can tweak change incidence CG reduce its weight increase its strength Steve did just Eric Jacksons 1987 two-servo built-up balsa design Orbiter flew victory Nats Steves modifications kitted Orbiter-2 Dodgson Designs 21230 Damson Rd Bothell WA 98021 Tel [206] 776-8067 Fred Mallett October 1995 took top HLG honors Visaliathe biggest sailplane competition country 78 Model Aviation Mosquito high-tech full-house model Maryland has Kevlar fuselage glass-over-foam wIngs Climmax CR Aircraft Design Twoservo polyhedral shown can also built four-servo aileron model well consistently HLG just like motor skill thought process must practice Remember must know airplane means flying conditions might expect contest figure five practice sessions must work should done four hours flying time before moving Try some thermal searching bored Start throwing seeing far away can go straight line across wind come back catch land feet Try go farther farther will teach fine smooth controls efficient speed airplane varying conditions also get airplane home Think having walk get airplane walk shame comfortable start going downwind back upwind back save upwind last unless wind light Next start throwing flying anywhere top launch start thermal turning see can get efficient fly turns youll get assuming same launch height have nailed start flying figure-eights smooth should able hit 90% straight-flight time doing 40-foot circles figure-eights teaches efficient turning thermal turning Finding thermal enough must fly smoothly efficiently make use Now time learn use local terrain Start working HLG-size slopesthe type found contest fields Like minivans trash cans especially trees Throw repeatedly same tree learn shape air flowing over around tree contest has won working treelines lift provide 3-30 mph winds higher winds adjust flight speed wind speed hover lighter winds must maintain efficient flight speed crnise figure-eights teaches speed control lift shape NORCAL Presents POAL 1996 May 18-19 Soon be the Premier Show Northern California Sonoma County Fair Grounds Santa Rosa Calif Show Hours Sat9-6 Sun 10-4 Demonstrations Manufactures Displayi Retail Welcome Latest RIC Engines Kits Accesioriei Tools Swap meet-Large area -tablei available Raffle Firit class Auction- 800 PM Saturday Flamingo Hotel Static Judging Trophies Registration 900 AM 800 PM Friday May 17th 800AM Noon Saturday 18th UNITED Santa Rosa 800-52I-404lVIP59lXL doNOR/CAL RIC SHOW P 0 Box 2912 Santa Rosa Ca 95409 Phone 707-539-3373 Fax 707-539-9601 May 1996 79 Northern Cal Wornia Hobby Exposition Inc OLD BUZZARD SOARS AGAIN 50-minute VIDEO based popular OLD BUZZARDS SOARING BOOK Dave Thornburg Launching thermaling landings special section hand launch technique Funny instructive Video $2795 Book $1695-or both $3995 PONY X PRE8S2--------5 MmitIctle Dr Albq NM 67123 sos 2994749 NiL1 DO YOU SPEAK few left $1995 es postpa Span 70 Length 34 Weight 35 lb RTF Wing area 670 sq Wing loading 135 oz/sq ft Radio 3 channels Engine 25 40 80 Model Aviation AVAP /Q 2OF Hudson Harbour Dr Poughkeepsie NY 12601 E-mail RCWindward@aolcom TUF-1 KitOnly $13995 Shipping & Handling$495 Demo videos$925 FREE BROCHURES information914 485-SHS 24 hours order credit card CA Hardware nut included NY stats residents add 725% Finally its time start recognizing thercnal lift patterns visualizing thermal shape head Other sources will tell find lift job able use find After practice sessions should no problem long airplane well designed well built well trimmed Practice working thermals Chris Boultinghouse owner CAB Designs 2007 Brook Hollow Cedar Park TX 78613 Tel [512] 259-4748 designed manufactured Corn Dogger HLG airplane Fred Mallett used win HLG Visalia three fundamental aspects hand-launch flying designer cannot ignore 1 Simple design construction pod-and-boom design about simple fuselage gets build front half fuselage stick boom back perch some tail feathers boom youre done Since carbon fiberglass arrow shafts kite spars easy find type fuselage construction makes sense scratch-builders kitmakers alike build foam wings because simple low parts count also light easy repair 2 Durability ties closely number 1 above design simple less break low mass HLG helps respect too Less mass equals less crunch make inevitable mistake 3 An HLG should bejiin HLG thing simply fun other aspect soaring Well okay havent tried cross-country yet Dont get wrong wind howls Im slope winch set up drag out Two-Meter Open-class airplane pick up HLG big airplanes sit ground rest day set about designing Corn Dogger goals mind design has evolved structurally over last three years aerodynamics have LSA EDGE SANDER rhe EASY way prepare balsa sheets wing skins flu Fiberglass parts Computer generated assembly channel aerobabcs 2RDL manual CR0-drawn three-view perspective diagramsWIND WA ikhoi-4 0 40 Size ARF Wing Span 545 nd Fuselage 1/32 Wing Area 520 sq plmood wrapped around uSe Length 42 inply formers some weight 52 lbsvacaum formed parts Engine 40- 46 2C Wings balsa 1/161 46- 6040sheeted foam cores Radio 4 Channels Aerobatics performance Color Blue & WhiteThis aircraft made have Red & Whitethe same aerobatic qualities Covering High Qoalityas full scale polyester film foelknife edge flat spin resistant printinglomcesaks etcl VoiceFax 70ftfl 818961 -6199 818 330-9351 I~I II1U~l ORDSONV B917 W 59th Street Chicago Illinois 60638 Phone 312 586-8503 Fax 312 586-8556 changed very little Probably common question What airfoil use Well cannot say hours wind-tunnel work mathematical calculation helped choose right airfoil much basic took look flight profile HLG compared other types model aircraft What did resemble What climbs high speed transitions slow glide operates similar Reynolds numbers RC HLG Powered free flight took look through airfoil collection settled G0432 thin 74% has lots camber looked right very important since tend lean heavily TLAR Looks About Right design rules change made airfoil give bit Phillips entry improve penetration seems work well rest airframe simple use pod-and-boom configuration because easy has low mass adds durability factor has low parasitic drag tail surfaces thin sheet balsa because hate building surfaces out bunch little sticks result durable design extremely easy thermal withstands roughand-tumble flying launches higher other design Ive seen Another question everybodys mind need ailerons fly HLG No offer aileron version Dogger Super Corn Dogger general fun 90% contests attend fly polyhedral rudder-and-elevator version easier fly forgiving fun trying concentrate aileron rudder coordination want concentrate fly Open-class airplane want design own HLG dont need lots time money youll have fun youll learn build light strong will learn lot about low-altitude thermaiing have questions feel free E mail CABdesigns@aolcOm Ill take time answer questions love talk sailplanes Gordon Jennings explains third-vector method finding lift windy conditions still day finding lift exists relatively simple matter Chase gust downwind have high probability tripping over thermal steady breeze present things get bit trickier simple useful method finding lift under challenging windy conditions based idea advanced skillfully exploited Joe Wurts relative wind wind-shift vector always points thermal Imagine yourself facing prevailing wind Figure 1 shows wind direction strength length arrow Lets assume arrow length UBAIII~ uses versatility power PC set up battery test print hardcopy results UBAIII designed specifically RC flyers take batteries seriously and5V accept nothing less best- analyzes rechargeable batteries identities weak cells before tail records prints results including charge/discharge curve have complete permanent record battery test best fully automatic Just connect PCs serial port tell type battery youre testing does rest UBAtI1 comes complete software List price $19995connectors serial cable two year warranty Intro price $17995and 30-day money-back guarantee Add $10 tor shippingvisit us http//mvwfltItprISCE/VWCOfl $22 airmail overseas prices US fundscompatible PC wibr serial ri & gel-calSAead add 1 call Ic May1996 81 I[IEIUFU41iI - TCHING COLORS Flame Red Deep Red Sky Blue Deep Blue Midnight Blue Bright Yellow Cub Yellow Dark Yellow Orange Black White Silver Perfect Paint high quality part fuel proof paint combines convenience superb results Perfect Paint will cover dopes epoxies metals fiberglass plastic smooth hard mar resis tant finish will crack chip NOW AVAILABLE P~ucheveronuhobbyaproductsu PO Box 2480 Sandusky Ohio 44870 Phone & Fax 419-797-2208 represents 5 mph breeze During actual flying two-foot length cassette tape tied end antenna will make precise Figure 1 Prevailing wind first vector observation easy Over course few seconds wind shifts left decreases Figure 2 New wind direction second vector strength Things now look like Figure 2 Wheres thermal intermediate thermaler thinks wind always points thermal heads downwind left know relative wind third vector always points lift draw Figure 3 picture heads Figure 3 Relative wind third vector dashed line represents relative wind wind change between prevailing steady-state wind recent gust lift will somewhere along dashed line far away thermal Watch strong steady state wind what air did shifted first second vector lift itself will drifting along ground about speed steady state wind lift close and/or steady state wind strong wind will shift quickly keep third vector pointing lift lift far away and/or steady state wind slow wind will shift slowly strong thermal can answered considering two cases wind shift end up pointing third vector Figure 4 Large shift small shift same way Figure 4 first shift produces short third vector indicates lift either huge very far away likely weak passing close second shift indicates very strong thermal because large direction change able impose prevailing wind standing steady breeze wind stops reverses bit wheres thermal Directly upwind first vector points second vector either points nowhere dead calm little upwind third vector points strongly upwind third-vector method also applies calm conditions case first vector points nowhere leaves third vector laying right top second vector gust pointing lift E-Mail Contacts Chris Boultinghouse CAB Designs CABdesigns@aolcom Bob Dodgson Dodgson Designs DodgsonB @eskimocom Gordon Jennings CVRC club GJenning@slonetorg Fred Mallett Heart Texas SS FrederM@aolcom odel Aviation colorspaj.. Inunder6O si No ropes logos Ieuenng avaiiaIieno assemblyll m F Y PY PU WtY T vERSAILLES KY 40383 131 RAvENWOCO R

RADIO CONTROL SOARING HAND-LAUNCH GLIDER HLG purest form RC Soaring spurns complicated launch equipment leaves airplane air provides unparalleled opportunity see model flight see results control inputs learn read air HLGs smallest can least expensive thermai sailplanes feeling launching thermal riding upward until sailplane speck sky greatest kicks model sailplane flight Since distinguishing characteristic hand-launch sailplane simply 15meter 60-inch wingspan limit construction materials methods vary HLG wings may built up sticks sheet may foam cores sheeted balsa obechi fiberglass carbon fiber Fuselages may wood composite pod-and-boom fully shaped Tailplanes conventional T-shape V-shape Control systems follow larger RC sailplane practice Two-channel polyhedral models rudder elevator common because light require simpler less expensive radio equipment four-channel transmitter mini receiver pair mini- microservos will Like other Soaring classes sophistication increases rapidly also see full house aileron HLGs four servos computer radios mix aileron rudder provide spoilerons glidepath control reflex launch preset Current HLG designs strive 12-14 ounces all-up weight HLGs can go down 10 ounces less models begin get noticeably delicate suffer limited receiver-battery life become too light launch well 15-16 ounces airplane too heavy throw hang-time suffers used call 60-inch 16-ounce airplanes HLGs now call lightair slopers Although low cost small size may attractive beginners feel HLGs well suited new sailplane pilots have know fly pretty well put sailplane small thermals found near ground stay Otherwise youll have short flights 15-20 seconds can discouraging beginners think beginners benefit other launching methods give longer flights stick-time master basics Flying HLG generally means making landings sailplane can get pretty beat up until youve developed competence landing youve mastered basics RC sailplane flight however youll learn fast HLG Because youre closer airplane can easily see what its doing reaction air its flying through Dave Thornburg taught us learn lot about plane yourself below fifty feet above fifty feet Since get plenty landing practice landing precision bound improve Whether use notch up contest scores just save wear tear old feet shooting 50 landings flying session sure gives chance improve accuracy smoothness techniques HLG flight competition design thermal finding call four advanced HLG pilots Steve Cameron Washington Fred Mallett Chris Boultinghouse Texas Gordon Jennings California Steve Cameron After won HLG 1995 Nats asked Steve advice HLG pilots good thing about HLG can fly anywhere HLG everyone dont need lot strength secret coordination movement want put 200 pounds body fingertip critical thing HLG must have maneuverability secret HLG design have light airplane Light wingtips especially important turning simple solution getting better fly much can fly 45 minutes day Fly conditions high wind low wind no wind After become familiar airplane can tweak change incidence CG reduce its weight increase its strength Steve did just Eric Jacksons 1987 two-servo built-up balsa design Orbiter flew victory Nats Steves modifications kitted Orbiter-2 Dodgson Designs 21230 Damson Rd Bothell WA 98021 Tel [206] 776-8067 Fred Mallett October 1995 took top HLG honors Visaliathe biggest sailplane competition country 78 Model Aviation Mosquito high-tech full-house model Maryland has Kevlar fuselage glass-over-foam wIngs Climmax CR Aircraft Design Twoservo polyhedral shown can also built four-servo aileron model well consistently HLG just like motor skill thought process must practice Remember must know airplane means flying conditions might expect contest figure five practice sessions must work should done four hours flying time before moving Try some thermal searching bored Start throwing seeing far away can go straight line across wind come back catch land feet Try go farther farther will teach fine smooth controls efficient speed airplane varying conditions also get airplane home Think having walk get airplane walk shame comfortable start going downwind back upwind back save upwind last unless wind light Next start throwing flying anywhere top launch start thermal turning see can get efficient fly turns youll get assuming same launch height have nailed start flying figure-eights smooth should able hit 90% straight-flight time doing 40-foot circles figure-eights teaches efficient turning thermal turning Finding thermal enough must fly smoothly efficiently make use Now time learn use local terrain Start working HLG-size slopesthe type found contest fields Like minivans trash cans especially trees Throw repeatedly same tree learn shape air flowing over around tree contest has won working treelines lift provide 3-30 mph winds higher winds adjust flight speed wind speed hover lighter winds must maintain efficient flight speed crnise figure-eights teaches speed control lift shape NORCAL Presents POAL 1996 May 18-19 Soon be the Premier Show Northern California Sonoma County Fair Grounds Santa Rosa Calif Show Hours Sat9-6 Sun 10-4 Demonstrations Manufactures Displayi Retail Welcome Latest RIC Engines Kits Accesioriei Tools Swap meet-Large area -tablei available Raffle Firit class Auction- 800 PM Saturday Flamingo Hotel Static Judging Trophies Registration 900 AM 800 PM Friday May 17th 800AM Noon Saturday 18th UNITED Santa Rosa 800-52I-404lVIP59lXL doNOR/CAL RIC SHOW P 0 Box 2912 Santa Rosa Ca 95409 Phone 707-539-3373 Fax 707-539-9601 May 1996 79 Northern Cal Wornia Hobby Exposition Inc OLD BUZZARD SOARS AGAIN 50-minute VIDEO based popular OLD BUZZARDS SOARING BOOK Dave Thornburg Launching thermaling landings special section hand launch technique Funny instructive Video $2795 Book $1695-or both $3995 PONY X PRE8S2--------5 MmitIctle Dr Albq NM 67123 sos 2994749 NiL1 DO YOU SPEAK few left $1995 es postpa Span 70 Length 34 Weight 35 lb RTF Wing area 670 sq Wing loading 135 oz/sq ft Radio 3 channels Engine 25 40 80 Model Aviation AVAP /Q 2OF Hudson Harbour Dr Poughkeepsie NY 12601 E-mail RCWindward@aolcom TUF-1 KitOnly $13995 Shipping & Handling$495 Demo videos$925 FREE BROCHURES information914 485-SHS 24 hours order credit card CA Hardware nut included NY stats residents add 725% Finally its time start recognizing thercnal lift patterns visualizing thermal shape head Other sources will tell find lift job able use find After practice sessions should no problem long airplane well designed well built well trimmed Practice working thermals Chris Boultinghouse owner CAB Designs 2007 Brook Hollow Cedar Park TX 78613 Tel [512] 259-4748 designed manufactured Corn Dogger HLG airplane Fred Mallett used win HLG Visalia three fundamental aspects hand-launch flying designer cannot ignore 1 Simple design construction pod-and-boom design about simple fuselage gets build front half fuselage stick boom back perch some tail feathers boom youre done Since carbon fiberglass arrow shafts kite spars easy find type fuselage construction makes sense scratch-builders kitmakers alike build foam wings because simple low parts count also light easy repair 2 Durability ties closely number 1 above design simple less break low mass HLG helps respect too Less mass equals less crunch make inevitable mistake 3 An HLG should bejiin HLG thing simply fun other aspect soaring Well okay havent tried cross-country yet Dont get wrong wind howls Im slope winch set up drag out Two-Meter Open-class airplane pick up HLG big airplanes sit ground rest day set about designing Corn Dogger goals mind design has evolved structurally over last three years aerodynamics have LSA EDGE SANDER rhe EASY way prepare balsa sheets wing skins flu Fiberglass parts Computer generated assembly channel aerobabcs 2RDL manual CR0-drawn three-view perspective diagramsWIND WA ikhoi-4 0 40 Size ARF Wing Span 545 nd Fuselage 1/32 Wing Area 520 sq plmood wrapped around uSe Length 42 inply formers some weight 52 lbsvacaum formed parts Engine 40- 46 2C Wings balsa 1/161 46- 6040sheeted foam cores Radio 4 Channels Aerobatics performance Color Blue & WhiteThis aircraft made have Red & Whitethe same aerobatic qualities Covering High Qoalityas full scale polyester film foelknife edge flat spin resistant printinglomcesaks etcl VoiceFax 70ftfl 818961 -6199 818 330-9351 I~I II1U~l ORDSONV B917 W 59th Street Chicago Illinois 60638 Phone 312 586-8503 Fax 312 586-8556 changed very little Probably common question What airfoil use Well cannot say hours wind-tunnel work mathematical calculation helped choose right airfoil much basic took look flight profile HLG compared other types model aircraft What did resemble What climbs high speed transitions slow glide operates similar Reynolds numbers RC HLG Powered free flight took look through airfoil collection settled G0432 thin 74% has lots camber looked right very important since tend lean heavily TLAR Looks About Right design rules change made airfoil give bit Phillips entry improve penetration seems work well rest airframe simple use pod-and-boom configuration because easy has low mass adds durability factor has low parasitic drag tail surfaces thin sheet balsa because hate building surfaces out bunch little sticks result durable design extremely easy thermal withstands roughand-tumble flying launches higher other design Ive seen Another question everybodys mind need ailerons fly HLG No offer aileron version Dogger Super Corn Dogger general fun 90% contests attend fly polyhedral rudder-and-elevator version easier fly forgiving fun trying concentrate aileron rudder coordination want concentrate fly Open-class airplane want design own HLG dont need lots time money youll have fun youll learn build light strong will learn lot about low-altitude thermaiing have questions feel free E mail CABdesigns@aolcOm Ill take time answer questions love talk sailplanes Gordon Jennings explains third-vector method finding lift windy conditions still day finding lift exists relatively simple matter Chase gust downwind have high probability tripping over thermal steady breeze present things get bit trickier simple useful method finding lift under challenging windy conditions based idea advanced skillfully exploited Joe Wurts relative wind wind-shift vector always points thermal Imagine yourself facing prevailing wind Figure 1 shows wind direction strength length arrow Lets assume arrow length UBAIII~ uses versatility power PC set up battery test print hardcopy results UBAIII designed specifically RC flyers take batteries seriously and5V accept nothing less best- analyzes rechargeable batteries identities weak cells before tail records prints results including charge/discharge curve have complete permanent record battery test best fully automatic Just connect PCs serial port tell type battery youre testing does rest UBAtI1 comes complete software List price $19995connectors serial cable two year warranty Intro price $17995and 30-day money-back guarantee Add $10 tor shippingvisit us http//mvwfltItprISCE/VWCOfl $22 airmail overseas prices US fundscompatible PC wibr serial ri & gel-calSAead add 1 call Ic May1996 81 I[IEIUFU41iI - TCHING COLORS Flame Red Deep Red Sky Blue Deep Blue Midnight Blue Bright Yellow Cub Yellow Dark Yellow Orange Black White Silver Perfect Paint high quality part fuel proof paint combines convenience superb results Perfect Paint will cover dopes epoxies metals fiberglass plastic smooth hard mar resis tant finish will crack chip NOW AVAILABLE P~ucheveronuhobbyaproductsu PO Box 2480 Sandusky Ohio 44870 Phone & Fax 419-797-2208 represents 5 mph breeze During actual flying two-foot length cassette tape tied end antenna will make precise Figure 1 Prevailing wind first vector observation easy Over course few seconds wind shifts left decreases Figure 2 New wind direction second vector strength Things now look like Figure 2 Wheres thermal intermediate thermaler thinks wind always points thermal heads downwind left know relative wind third vector always points lift draw Figure 3 picture heads Figure 3 Relative wind third vector dashed line represents relative wind wind change between prevailing steady-state wind recent gust lift will somewhere along dashed line far away thermal Watch strong steady state wind what air did shifted first second vector lift itself will drifting along ground about speed steady state wind lift close and/or steady state wind strong wind will shift quickly keep third vector pointing lift lift far away and/or steady state wind slow wind will shift slowly strong thermal can answered considering two cases wind shift end up pointing third vector Figure 4 Large shift small shift same way Figure 4 first shift produces short third vector indicates lift either huge very far away likely weak passing close second shift indicates very strong thermal because large direction change able impose prevailing wind standing steady breeze wind stops reverses bit wheres thermal Directly upwind first vector points second vector either points nowhere dead calm little upwind third vector points strongly upwind third-vector method also applies calm conditions case first vector points nowhere leaves third vector laying right top second vector gust pointing lift E-Mail Contacts Chris Boultinghouse CAB Designs CABdesigns@aolcom Bob Dodgson Dodgson Designs DodgsonB @eskimocom Gordon Jennings CVRC club GJenning@slonetorg Fred Mallett Heart Texas SS FrederM@aolcom odel Aviation colorspaj.. Inunder6O si No ropes logos Ieuenng avaiiaIieno assemblyll m F Y PY PU WtY T vERSAILLES KY 40383 131 RAvENWOCO R