PLANNING go Toledo RC Exposition Also plan attend first annual FAI Pattern Judging School Ron Chidgey will holding 800 am noon April 8-9 Radis son Hotel understand will very much like judging school conducted Eu rope last summer can attend school morning participate Expo activities afternoon Reservations 419 241-3000 sure miss attending Toledo show stationed Dayton OH 1964-69 Washington DC 1969-72 went confer ence years old Lucas County Rec reation Center home Toledo Mudhens have chance go dont miss Maybe someone out can help fellow modeler Jed Mottola 4-2 1 Saddle River Rd Fairlawn NJ 07410 wrote information purchase parts obtain repairs Saito FA 90 twin engines claims have tried Indy R/C success anyone Out can help him please drop him line weather northwest Florida oldtimers seem consider Baja Alabama 6nally beginning warm up Van Putte flying weather friends think strange hate fly airplane temperature below 600 F dont like go out running above 600 Actually works Out pretty well cause can go flying its warm longdistance running its cold Theres actually simple explanation liking cold weather flying RC hands get cold easily makes flying RC less fun Since object flying RC fun dont go out flying very much temperature low 600 means sometimes dont fly November March can imagine shaky flying first flight new year Tomorrow its predicted 780 guess whos going flying received letter David Hall 2963 Green wich St Carlsbad CA 92008 took exception explanation January 89 sue rudder turns airplane using wing dihedral Im going quote parts let ter make some comments wrote state airplane rolls rudder used turn because dihedral wing incorrect rudder used ailerons turn airplane airplane yaws direction rudder deflection causes outboard wing speed up slightly inboard wing slow slightly Since lift wing proportional roughly square speed outboard wing gener ates slightly lift inboard wing causes airplane roll Dihedral used provide roll stability airplane correct about virtually everything wrote However wing dihedral still pri mary reason airplane rolls direction rudder application true outboard wing generates lift inboard wing due yaw rate does tend make airplane roll direction rudder applica tion However takes significant yaw rate equivalent effect dihedral have midwing airplane no wing di hedral apply rudder deflection very little rolling moment generated airplane will just develop skid However add small amount wing dihedral same air plane will roll rudder deflected same effect can demonstrated moving wing top fuselage mutual interaction wing fuselage gives ef fect much like wing dihedral Thats beginner airplanes have high wings some dihedral Conversely airplanes low wings no dihedral produce effect though wing negative dihedral Pattern airplanes supposed yaw roll rudder deflected low-wing Pattern airplanes have Darrell Kampshrorr LAugusta GA readies sixth series fine Augusta pattern pianes Hes very active Pattern competltor photo right see Ron Van Putte assisting FAi flier John Fuqus Duo wiii seen Southeast Pattern meets 54 Model Aviation Radio Confro Sport Aerobatics Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 Sabrebat iii canard design Dan Reiss Manhattan Beach CA uses trio K&B 61s power Wingspan 66 horizontai tsii ares has 25% wings 924 sq Center en gine uses reverse rotation pusher prop heip counter torque other two small amount dihedral cancel out ad verse effect low wing position Midwing Pattern airplanes usually have little no dihe dral object get rid rolling ten dency rudder deflected way curious about just much rolling moment could generated developing yaw rate due rudder deflection per formed calculation calculation involved tegrating some messy terms until decided sim plify effort making some assumptions may quibble assumptions you have perform integrals sumptions sectional lift coefficient across wingspan constant wing has constant chord Its exact wing twist tip losses affect first assumption fact beginner airplanes have rectangular wings makes second assumption sound rolling moment Wb2 RM aw Rate 2V W equals airplane weight b wing span V alrplane speed did sample calculation five-pound air plane 54-in wingspan travelling 60 miles per hour rolling moment footpounds 000335 x yaw rate degrees per sec ond can see very small rolling mo ments developed unless yaw rate very large Id glad send calculations sends SASE David Hall went letter appears some modelers fully understand turns will discuss Con trary what people think airplane turned rudder although know rudder alone will turn airplane Turning airplane caused horizontal component lift airplane banked Since lift directed up altitude malntained ap plying Up elevator would cause airplane turn properly except minor problem occurs using ailerons turn RVPadverse alleron yaw down aileron has drag up aileron causes airplane yaw outside turn skid slip rudder used correct ad verse aileron yaw properly coordinated turn airplane does skid because centrifugal force turning airplane balanced horizontal component lift horizontal compo nents propeller elevator forces downward force gravity balanced ver tical component lift vertical component elevator propeller Aside skidding airplane can turned use rudder Banking air plane shortens turning radius considerablythe steeper bank smaller radius turnand higher G-load airplane disagreement have what David Hall wrote really less disagreement clarification Banking airplane equal amounts up down aileron does cause ad verse yaw describes experienced modelers use aileron differential eliminate down aileron adjusted varying amounts reduced travel compared up aileron until drag effects cancelled airplane doesnt tend yaw ailerons de flected have questions want ad ditional information David Hall write him address have indicated Continued page 167 High Performance Models presents ECL IPSE Designed Henry Piorun Farmer Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Pre-Built Kit $35000 add *1500 SH Send Check Money Order Plug WIngs rglass Belly Pan Pie-cut Holes Wing Joiner Tubes Ultralight Honeycomb Vdlngcors extra 40MOI Optional Plastic Fiberglass canopy Fiberglass Fuselage meided wing joiner tube HIGH PERFORMANCE MODELS 9556116 at. North Delta British Columbia 6Z4 Canada 604-588-0805 Sample some items bought sold New Royal Chipmunk K&B 40 W/ retracts$8500 Used Indy Cap-21 W/O engine 40-60 2-cycle$4000 New Dynaflite Pice OCake RTF W/ 05 electric$5000 Used SAITO FA-BO 4-cycle R/C w/ muf runs great$7500 New Rossi 61 ABC$5500 Used Rhom air retracts 90 deg wI pump$6500 Futaba Conquest 5Ch PCM never used$15000 May 1989 55 Holds twelve gIG-plugs U Made tough fuel resistant Protects elements dirt hard knocks Keeps gb-plugs neat org easy find easy use 0 See favorite Hobby Shop Du-Bro Products Inc Bonner Road onda IL 60084 buy retail F TRADER JACKS BUY & SELL LiU Be part worldwide network selling / trading R/C equipment Planes engines parts etc want buy sell send Complete description item Include daytime phone number address PO Box 4556 Fresno CA 93744 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30 116233 332240 18 243 316249 14 256 1 32337 120337 1 1633049 332344 58 18 35471 31636282 14 37395 516385110 36 389124 34 3165191 11645876 48 33247094 56 16480106 66 316493 12275 14 4110 13484 38 4 165 225 139 12 4 225 261 MATCHED SHEETS 43 3324100 104106 3164120 144131 BALSA SliCKS 36W 1161409 1163810 1161214 332 1410 332 3812 332 1216 181009 3116141116 3718 381218 4616121024 553163161116 61316 381720 316 122230 7114 141624 14 381926 14122130 14343444 14 14055 5165167128 38 382737 38 123246 38 344255 38 15276 12123653 12344662 12 15878 58 584865 34 346790 s BALSA TRIANGLES 36 425 8630 35 45 55 BALSA PLANKS 36 85 00 1480 1123275 1124360 22225 23325 24435 33495 34689 TAPERED SHEETS36 14265 14365 38268 38398 123120 LONE STAR EPOX V 9 oLsl-8 95 So598 15,596 30oo596 u uIIi IzV1 OM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD36 1323 53 1203 53 116353 332363 183 77 316389 143104 383122 123158 343242 3335 116483 3324100 184115 3164133 144158 364 236 124 322 TRAILING EDGE 36 14132 51611439 3811246 12270 INSTANT GLUE 10 T5ck 298 10 75, 298 2o Thok 550 20 10 566 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest Catalog SPRUCE STICKS 36 48 18 181725 18 142026 118 3182232 31631162838 14 143458 14 384055 14 61124565 38 6 3184969 318 126077 112 1126688 11234 75 97 SPRUCE TRIANGLES 318318 12112 34 34 LITEPLV 48 BASSWOOD48 31631626 3161430 311631838 31611246 3163469 141442 143849 143480 38 31860 381270 3183490 121290 1234100 BUNDLE DEALS 20116336699 201 164361035 203132 865 15332 436855 15118336735 1018436695 15316336920 15316436830 1014 336655 1014436830 1038336870 538436655 512336540 5124361580 10332448885 5118448500 53116448600 514448645 BIRCH DOWELS36 18 09 31611 1414 51625 31832 3PLYBIRCH48 16412620 13212445 11612455 812495 SPLYBIRCH 3132612 1/812 363116 12 47114 12 6438 12 81112612 GROOVED LG MOUNTS 13 Inch. 31834118140 3834 1532140 1123413116145 186155 1812315 1412495 LONE STAR 48 Handling Charge pay250 UPS Add $300 COD $300 extra PP APO FPO 1623 57th St Lubbock TX 79412States Weaccaps Visapersonal checks orcoD 616% tax Texas US currency Minimum Wood Order 81000 Yg lined up runway wrong ma neuver starts enter final crosswind leg what would normally traffic pattern correct procedure call maneuver Start ing now turn onto crosswind leg maneuver complete until youve climbed Out same just made takeoff should called Complete before FM event maneuver complete until turn-out made just FAd takeoff Overshoot meant power dive Fly Past actuality imaginary pilot model attempting make landing spot front judges sometimes happens full-scale approach has brought him little too high too long Realizing hes down altitude less 10 ft throttle idle no hope hitting spot full throttle applied Level flight main tained until climbing speed attained model climbs out taldng off Overshoot maneuver well suited type alrcraft Its very pretty watch wben per formed properly can garner good flight points right wrong however its supposed simplicity may earn wrath judges BOM nile What majority todays Scale modelers really want Ive read editorials rules proposals recently favor event Scale competition would eliminate Builder Model rule Various names have applied proposals read suggestions have wonder just deeply self-styled modelers proposing events actually involved Scale model ing interested enough Scale read AMA rule books would realize have already given what theyre asking Its called RC Fun Scale Event No 520 its Provisional event added last year express purpose allowing modelers inter ested enjoying flying Scale model air craft participate competition having built models themselves advent prebuilt ready-built Scale models todays market great modelers have chosen take route cross section Scale modelers considered however wonder great per centage nonbuilder competition Scale fliers really compared against percentage enjoy building aspect Scale much maybe flying what Ive seen since event intro duced doesnt seem much interest havent seen event run some larger Scale contests such Mint Julep Scale Meet 88 Mats reviewing Scale Dimension newsletter Scale Squadron Southern California havent seen great deal interest RC Fun Scale either Does mean no interest simply todays modeler aware Next time get chance turn page 109 1988-1989 AMA Competition Regulations book read about RC Fun Scale just might find what youve asking has already given has Provisional status support want keep May skies remain Scale RC AerobaticsNan Putte Continued page 55 have informed secondhandbut reliable sourcethat 1989 Team Selection Fi nals Masters Tournament will held Pensacola FL June 15-18 Sauffley Field Boy will nice Its 50 miles away home can sleep own bed night still activities cancome down Masters site confirmed flying Site Navy landing field just north Gulf Shores FL about 34 miles Pensacola dates men tioned Van Putte correct See com plete announcement Competition Newslet ter section magazine RMcM old flying buddies will shocked hear am almost ready fly new air vehicle am slow building sur prise since its garden variety Pattern air plane Helicopter resisted impulse buy years before finally deciding get X-Cell 50 Miniature Aircraft No dont plan bore Helicopter exploits just few first impression opening box must million parts Ac tually theres fewer 500 Construction now about three-quarters complete Ill prob ably terrify myself onlookers first flight about two weeks RC Soaring/Blakeslee Continued page 57 pate International class FM designates F models 3 RC B Thermal Soaring fliers although active F3B still like keep abreast developments class because its leading edge Soaring often foretells design ideas eventually filter down us other hand sizeable group exclaims have no interest F3B try re spect points view include different types material column month worked Out theres quite run F3B stuff following dont need read itbut think youll missing something dont beginner F3B piece written Jim Sonnenmeier member Clarence SailHARD MAPLE 1 4 8 38 38 1 2 31834 1234 18 40 45 SO 68 66 BALSA HOT LINE Coil 1806 745 6394 10 am 6 pm Central Time 48 586 625 625 625 725 800
Edition: Model Aviation - 1989/05
Page Numbers: 54, 55, 167
PLANNING go Toledo RC Exposition Also plan attend first annual FAI Pattern Judging School Ron Chidgey will holding 800 am noon April 8-9 Radis son Hotel understand will very much like judging school conducted Eu rope last summer can attend school morning participate Expo activities afternoon Reservations 419 241-3000 sure miss attending Toledo show stationed Dayton OH 1964-69 Washington DC 1969-72 went confer ence years old Lucas County Rec reation Center home Toledo Mudhens have chance go dont miss Maybe someone out can help fellow modeler Jed Mottola 4-2 1 Saddle River Rd Fairlawn NJ 07410 wrote information purchase parts obtain repairs Saito FA 90 twin engines claims have tried Indy R/C success anyone Out can help him please drop him line weather northwest Florida oldtimers seem consider Baja Alabama 6nally beginning warm up Van Putte flying weather friends think strange hate fly airplane temperature below 600 F dont like go out running above 600 Actually works Out pretty well cause can go flying its warm longdistance running its cold Theres actually simple explanation liking cold weather flying RC hands get cold easily makes flying RC less fun Since object flying RC fun dont go out flying very much temperature low 600 means sometimes dont fly November March can imagine shaky flying first flight new year Tomorrow its predicted 780 guess whos going flying received letter David Hall 2963 Green wich St Carlsbad CA 92008 took exception explanation January 89 sue rudder turns airplane using wing dihedral Im going quote parts let ter make some comments wrote state airplane rolls rudder used turn because dihedral wing incorrect rudder used ailerons turn airplane airplane yaws direction rudder deflection causes outboard wing speed up slightly inboard wing slow slightly Since lift wing proportional roughly square speed outboard wing gener ates slightly lift inboard wing causes airplane roll Dihedral used provide roll stability airplane correct about virtually everything wrote However wing dihedral still pri mary reason airplane rolls direction rudder application true outboard wing generates lift inboard wing due yaw rate does tend make airplane roll direction rudder applica tion However takes significant yaw rate equivalent effect dihedral have midwing airplane no wing di hedral apply rudder deflection very little rolling moment generated airplane will just develop skid However add small amount wing dihedral same air plane will roll rudder deflected same effect can demonstrated moving wing top fuselage mutual interaction wing fuselage gives ef fect much like wing dihedral Thats beginner airplanes have high wings some dihedral Conversely airplanes low wings no dihedral produce effect though wing negative dihedral Pattern airplanes supposed yaw roll rudder deflected low-wing Pattern airplanes have Darrell Kampshrorr LAugusta GA readies sixth series fine Augusta pattern pianes Hes very active Pattern competltor photo right see Ron Van Putte assisting FAi flier John Fuqus Duo wiii seen Southeast Pattern meets 54 Model Aviation Radio Confro Sport Aerobatics Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 Sabrebat iii canard design Dan Reiss Manhattan Beach CA uses trio K&B 61s power Wingspan 66 horizontai tsii ares has 25% wings 924 sq Center en gine uses reverse rotation pusher prop heip counter torque other two small amount dihedral cancel out ad verse effect low wing position Midwing Pattern airplanes usually have little no dihe dral object get rid rolling ten dency rudder deflected way curious about just much rolling moment could generated developing yaw rate due rudder deflection per formed calculation calculation involved tegrating some messy terms until decided sim plify effort making some assumptions may quibble assumptions you have perform integrals sumptions sectional lift coefficient across wingspan constant wing has constant chord Its exact wing twist tip losses affect first assumption fact beginner airplanes have rectangular wings makes second assumption sound rolling moment Wb2 RM aw Rate 2V W equals airplane weight b wing span V alrplane speed did sample calculation five-pound air plane 54-in wingspan travelling 60 miles per hour rolling moment footpounds 000335 x yaw rate degrees per sec ond can see very small rolling mo ments developed unless yaw rate very large Id glad send calculations sends SASE David Hall went letter appears some modelers fully understand turns will discuss Con trary what people think airplane turned rudder although know rudder alone will turn airplane Turning airplane caused horizontal component lift airplane banked Since lift directed up altitude malntained ap plying Up elevator would cause airplane turn properly except minor problem occurs using ailerons turn RVPadverse alleron yaw down aileron has drag up aileron causes airplane yaw outside turn skid slip rudder used correct ad verse aileron yaw properly coordinated turn airplane does skid because centrifugal force turning airplane balanced horizontal component lift horizontal compo nents propeller elevator forces downward force gravity balanced ver tical component lift vertical component elevator propeller Aside skidding airplane can turned use rudder Banking air plane shortens turning radius considerablythe steeper bank smaller radius turnand higher G-load airplane disagreement have what David Hall wrote really less disagreement clarification Banking airplane equal amounts up down aileron does cause ad verse yaw describes experienced modelers use aileron differential eliminate down aileron adjusted varying amounts reduced travel compared up aileron until drag effects cancelled airplane doesnt tend yaw ailerons de flected have questions want ad ditional information David Hall write him address have indicated Continued page 167 High Performance Models presents ECL IPSE Designed Henry Piorun Farmer Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Pre-Built Kit $35000 add *1500 SH Send Check Money Order Plug WIngs rglass Belly Pan Pie-cut Holes Wing Joiner Tubes Ultralight Honeycomb Vdlngcors extra 40MOI Optional Plastic Fiberglass canopy Fiberglass Fuselage meided wing joiner tube HIGH PERFORMANCE MODELS 9556116 at. North Delta British Columbia 6Z4 Canada 604-588-0805 Sample some items bought sold New Royal Chipmunk K&B 40 W/ retracts$8500 Used Indy Cap-21 W/O engine 40-60 2-cycle$4000 New Dynaflite Pice OCake RTF W/ 05 electric$5000 Used SAITO FA-BO 4-cycle R/C w/ muf runs great$7500 New Rossi 61 ABC$5500 Used Rhom air retracts 90 deg wI pump$6500 Futaba Conquest 5Ch PCM never used$15000 May 1989 55 Holds twelve gIG-plugs U Made tough fuel resistant Protects elements dirt hard knocks Keeps gb-plugs neat org easy find easy use 0 See favorite Hobby Shop Du-Bro Products Inc Bonner Road onda IL 60084 buy retail F TRADER JACKS BUY & SELL LiU Be part worldwide network selling / trading R/C equipment Planes engines parts etc want buy sell send Complete description item Include daytime phone number address PO Box 4556 Fresno CA 93744 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30 116233 332240 18 243 316249 14 256 1 32337 120337 1 1633049 332344 58 18 35471 31636282 14 37395 516385110 36 389124 34 3165191 11645876 48 33247094 56 16480106 66 316493 12275 14 4110 13484 38 4 165 225 139 12 4 225 261 MATCHED SHEETS 43 3324100 104106 3164120 144131 BALSA SliCKS 36W 1161409 1163810 1161214 332 1410 332 3812 332 1216 181009 3116141116 3718 381218 4616121024 553163161116 61316 381720 316 122230 7114 141624 14 381926 14122130 14343444 14 14055 5165167128 38 382737 38 123246 38 344255 38 15276 12123653 12344662 12 15878 58 584865 34 346790 s BALSA TRIANGLES 36 425 8630 35 45 55 BALSA PLANKS 36 85 00 1480 1123275 1124360 22225 23325 24435 33495 34689 TAPERED SHEETS36 14265 14365 38268 38398 123120 LONE STAR EPOX V 9 oLsl-8 95 So598 15,596 30oo596 u uIIi IzV1 OM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD36 1323 53 1203 53 116353 332363 183 77 316389 143104 383122 123158 343242 3335 116483 3324100 184115 3164133 144158 364 236 124 322 TRAILING EDGE 36 14132 51611439 3811246 12270 INSTANT GLUE 10 T5ck 298 10 75, 298 2o Thok 550 20 10 566 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest Catalog SPRUCE STICKS 36 48 18 181725 18 142026 118 3182232 31631162838 14 143458 14 384055 14 61124565 38 6 3184969 318 126077 112 1126688 11234 75 97 SPRUCE TRIANGLES 318318 12112 34 34 LITEPLV 48 BASSWOOD48 31631626 3161430 311631838 31611246 3163469 141442 143849 143480 38 31860 381270 3183490 121290 1234100 BUNDLE DEALS 20116336699 201 164361035 203132 865 15332 436855 15118336735 1018436695 15316336920 15316436830 1014 336655 1014436830 1038336870 538436655 512336540 5124361580 10332448885 5118448500 53116448600 514448645 BIRCH DOWELS36 18 09 31611 1414 51625 31832 3PLYBIRCH48 16412620 13212445 11612455 812495 SPLYBIRCH 3132612 1/812 363116 12 47114 12 6438 12 81112612 GROOVED LG MOUNTS 13 Inch. 31834118140 3834 1532140 1123413116145 186155 1812315 1412495 LONE STAR 48 Handling Charge pay250 UPS Add $300 COD $300 extra PP APO FPO 1623 57th St Lubbock TX 79412States Weaccaps Visapersonal checks orcoD 616% tax Texas US currency Minimum Wood Order 81000 Yg lined up runway wrong ma neuver starts enter final crosswind leg what would normally traffic pattern correct procedure call maneuver Start ing now turn onto crosswind leg maneuver complete until youve climbed Out same just made takeoff should called Complete before FM event maneuver complete until turn-out made just FAd takeoff Overshoot meant power dive Fly Past actuality imaginary pilot model attempting make landing spot front judges sometimes happens full-scale approach has brought him little too high too long Realizing hes down altitude less 10 ft throttle idle no hope hitting spot full throttle applied Level flight main tained until climbing speed attained model climbs out taldng off Overshoot maneuver well suited type alrcraft Its very pretty watch wben per formed properly can garner good flight points right wrong however its supposed simplicity may earn wrath judges BOM nile What majority todays Scale modelers really want Ive read editorials rules proposals recently favor event Scale competition would eliminate Builder Model rule Various names have applied proposals read suggestions have wonder just deeply self-styled modelers proposing events actually involved Scale model ing interested enough Scale read AMA rule books would realize have already given what theyre asking Its called RC Fun Scale Event No 520 its Provisional event added last year express purpose allowing modelers inter ested enjoying flying Scale model air craft participate competition having built models themselves advent prebuilt ready-built Scale models todays market great modelers have chosen take route cross section Scale modelers considered however wonder great per centage nonbuilder competition Scale fliers really compared against percentage enjoy building aspect Scale much maybe flying what Ive seen since event intro duced doesnt seem much interest havent seen event run some larger Scale contests such Mint Julep Scale Meet 88 Mats reviewing Scale Dimension newsletter Scale Squadron Southern California havent seen great deal interest RC Fun Scale either Does mean no interest simply todays modeler aware Next time get chance turn page 109 1988-1989 AMA Competition Regulations book read about RC Fun Scale just might find what youve asking has already given has Provisional status support want keep May skies remain Scale RC AerobaticsNan Putte Continued page 55 have informed secondhandbut reliable sourcethat 1989 Team Selection Fi nals Masters Tournament will held Pensacola FL June 15-18 Sauffley Field Boy will nice Its 50 miles away home can sleep own bed night still activities cancome down Masters site confirmed flying Site Navy landing field just north Gulf Shores FL about 34 miles Pensacola dates men tioned Van Putte correct See com plete announcement Competition Newslet ter section magazine RMcM old flying buddies will shocked hear am almost ready fly new air vehicle am slow building sur prise since its garden variety Pattern air plane Helicopter resisted impulse buy years before finally deciding get X-Cell 50 Miniature Aircraft No dont plan bore Helicopter exploits just few first impression opening box must million parts Ac tually theres fewer 500 Construction now about three-quarters complete Ill prob ably terrify myself onlookers first flight about two weeks RC Soaring/Blakeslee Continued page 57 pate International class FM designates F models 3 RC B Thermal Soaring fliers although active F3B still like keep abreast developments class because its leading edge Soaring often foretells design ideas eventually filter down us other hand sizeable group exclaims have no interest F3B try re spect points view include different types material column month worked Out theres quite run F3B stuff following dont need read itbut think youll missing something dont beginner F3B piece written Jim Sonnenmeier member Clarence SailHARD MAPLE 1 4 8 38 38 1 2 31834 1234 18 40 45 SO 68 66 BALSA HOT LINE Coil 1806 745 6394 10 am 6 pm Central Time 48 586 625 625 625 725 800
Edition: Model Aviation - 1989/05
Page Numbers: 54, 55, 167
PLANNING go Toledo RC Exposition Also plan attend first annual FAI Pattern Judging School Ron Chidgey will holding 800 am noon April 8-9 Radis son Hotel understand will very much like judging school conducted Eu rope last summer can attend school morning participate Expo activities afternoon Reservations 419 241-3000 sure miss attending Toledo show stationed Dayton OH 1964-69 Washington DC 1969-72 went confer ence years old Lucas County Rec reation Center home Toledo Mudhens have chance go dont miss Maybe someone out can help fellow modeler Jed Mottola 4-2 1 Saddle River Rd Fairlawn NJ 07410 wrote information purchase parts obtain repairs Saito FA 90 twin engines claims have tried Indy R/C success anyone Out can help him please drop him line weather northwest Florida oldtimers seem consider Baja Alabama 6nally beginning warm up Van Putte flying weather friends think strange hate fly airplane temperature below 600 F dont like go out running above 600 Actually works Out pretty well cause can go flying its warm longdistance running its cold Theres actually simple explanation liking cold weather flying RC hands get cold easily makes flying RC less fun Since object flying RC fun dont go out flying very much temperature low 600 means sometimes dont fly November March can imagine shaky flying first flight new year Tomorrow its predicted 780 guess whos going flying received letter David Hall 2963 Green wich St Carlsbad CA 92008 took exception explanation January 89 sue rudder turns airplane using wing dihedral Im going quote parts let ter make some comments wrote state airplane rolls rudder used turn because dihedral wing incorrect rudder used ailerons turn airplane airplane yaws direction rudder deflection causes outboard wing speed up slightly inboard wing slow slightly Since lift wing proportional roughly square speed outboard wing gener ates slightly lift inboard wing causes airplane roll Dihedral used provide roll stability airplane correct about virtually everything wrote However wing dihedral still pri mary reason airplane rolls direction rudder application true outboard wing generates lift inboard wing due yaw rate does tend make airplane roll direction rudder applica tion However takes significant yaw rate equivalent effect dihedral have midwing airplane no wing di hedral apply rudder deflection very little rolling moment generated airplane will just develop skid However add small amount wing dihedral same air plane will roll rudder deflected same effect can demonstrated moving wing top fuselage mutual interaction wing fuselage gives ef fect much like wing dihedral Thats beginner airplanes have high wings some dihedral Conversely airplanes low wings no dihedral produce effect though wing negative dihedral Pattern airplanes supposed yaw roll rudder deflected low-wing Pattern airplanes have Darrell Kampshrorr LAugusta GA readies sixth series fine Augusta pattern pianes Hes very active Pattern competltor photo right see Ron Van Putte assisting FAi flier John Fuqus Duo wiii seen Southeast Pattern meets 54 Model Aviation Radio Confro Sport Aerobatics Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 Sabrebat iii canard design Dan Reiss Manhattan Beach CA uses trio K&B 61s power Wingspan 66 horizontai tsii ares has 25% wings 924 sq Center en gine uses reverse rotation pusher prop heip counter torque other two small amount dihedral cancel out ad verse effect low wing position Midwing Pattern airplanes usually have little no dihe dral object get rid rolling ten dency rudder deflected way curious about just much rolling moment could generated developing yaw rate due rudder deflection per formed calculation calculation involved tegrating some messy terms until decided sim plify effort making some assumptions may quibble assumptions you have perform integrals sumptions sectional lift coefficient across wingspan constant wing has constant chord Its exact wing twist tip losses affect first assumption fact beginner airplanes have rectangular wings makes second assumption sound rolling moment Wb2 RM aw Rate 2V W equals airplane weight b wing span V alrplane speed did sample calculation five-pound air plane 54-in wingspan travelling 60 miles per hour rolling moment footpounds 000335 x yaw rate degrees per sec ond can see very small rolling mo ments developed unless yaw rate very large Id glad send calculations sends SASE David Hall went letter appears some modelers fully understand turns will discuss Con trary what people think airplane turned rudder although know rudder alone will turn airplane Turning airplane caused horizontal component lift airplane banked Since lift directed up altitude malntained ap plying Up elevator would cause airplane turn properly except minor problem occurs using ailerons turn RVPadverse alleron yaw down aileron has drag up aileron causes airplane yaw outside turn skid slip rudder used correct ad verse aileron yaw properly coordinated turn airplane does skid because centrifugal force turning airplane balanced horizontal component lift horizontal compo nents propeller elevator forces downward force gravity balanced ver tical component lift vertical component elevator propeller Aside skidding airplane can turned use rudder Banking air plane shortens turning radius considerablythe steeper bank smaller radius turnand higher G-load airplane disagreement have what David Hall wrote really less disagreement clarification Banking airplane equal amounts up down aileron does cause ad verse yaw describes experienced modelers use aileron differential eliminate down aileron adjusted varying amounts reduced travel compared up aileron until drag effects cancelled airplane doesnt tend yaw ailerons de flected have questions want ad ditional information David Hall write him address have indicated Continued page 167 High Performance Models presents ECL IPSE Designed Henry Piorun Farmer Canadian National Champion & FAI Canadian Team Member Designed Specifically FAI Pattern Flying Perform Equally Well Other AMA Classes Pre-Built Kit $35000 add *1500 SH Send Check Money Order Plug WIngs rglass Belly Pan Pie-cut Holes Wing Joiner Tubes Ultralight Honeycomb Vdlngcors extra 40MOI Optional Plastic Fiberglass canopy Fiberglass Fuselage meided wing joiner tube HIGH PERFORMANCE MODELS 9556116 at. North Delta British Columbia 6Z4 Canada 604-588-0805 Sample some items bought sold New Royal Chipmunk K&B 40 W/ retracts$8500 Used Indy Cap-21 W/O engine 40-60 2-cycle$4000 New Dynaflite Pice OCake RTF W/ 05 electric$5000 Used SAITO FA-BO 4-cycle R/C w/ muf runs great$7500 New Rossi 61 ABC$5500 Used Rhom air retracts 90 deg wI pump$6500 Futaba Conquest 5Ch PCM never used$15000 May 1989 55 Holds twelve gIG-plugs U Made tough fuel resistant Protects elements dirt hard knocks Keeps gb-plugs neat org easy find easy use 0 See favorite Hobby Shop Du-Bro Products Inc Bonner Road onda IL 60084 buy retail F TRADER JACKS BUY & SELL LiU Be part worldwide network selling / trading R/C equipment Planes engines parts etc want buy sell send Complete description item Include daytime phone number address PO Box 4556 Fresno CA 93744 WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30 116233 332240 18 243 316249 14 256 1 32337 120337 1 1633049 332344 58 18 35471 31636282 14 37395 516385110 36 389124 34 3165191 11645876 48 33247094 56 16480106 66 316493 12275 14 4110 13484 38 4 165 225 139 12 4 225 261 MATCHED SHEETS 43 3324100 104106 3164120 144131 BALSA SliCKS 36W 1161409 1163810 1161214 332 1410 332 3812 332 1216 181009 3116141116 3718 381218 4616121024 553163161116 61316 381720 316 122230 7114 141624 14 381926 14122130 14343444 14 14055 5165167128 38 382737 38 123246 38 344255 38 15276 12123653 12344662 12 15878 58 584865 34 346790 s BALSA TRIANGLES 36 425 8630 35 45 55 BALSA PLANKS 36 85 00 1480 1123275 1124360 22225 23325 24435 33495 34689 TAPERED SHEETS36 14265 14365 38268 38398 123120 LONE STAR EPOX V 9 oLsl-8 95 So598 15,596 30oo596 u uIIi IzV1 OM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD36 1323 53 1203 53 116353 332363 183 77 316389 143104 383122 123158 343242 3335 116483 3324100 184115 3164133 144158 364 236 124 322 TRAILING EDGE 36 14132 51611439 3811246 12270 INSTANT GLUE 10 T5ck 298 10 75, 298 2o Thok 550 20 10 566 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest Catalog SPRUCE STICKS 36 48 18 181725 18 142026 118 3182232 31631162838 14 143458 14 384055 14 61124565 38 6 3184969 318 126077 112 1126688 11234 75 97 SPRUCE TRIANGLES 318318 12112 34 34 LITEPLV 48 BASSWOOD48 31631626 3161430 311631838 31611246 3163469 141442 143849 143480 38 31860 381270 3183490 121290 1234100 BUNDLE DEALS 20116336699 201 164361035 203132 865 15332 436855 15118336735 1018436695 15316336920 15316436830 1014 336655 1014436830 1038336870 538436655 512336540 5124361580 10332448885 5118448500 53116448600 514448645 BIRCH DOWELS36 18 09 31611 1414 51625 31832 3PLYBIRCH48 16412620 13212445 11612455 812495 SPLYBIRCH 3132612 1/812 363116 12 47114 12 6438 12 81112612 GROOVED LG MOUNTS 13 Inch. 31834118140 3834 1532140 1123413116145 186155 1812315 1412495 LONE STAR 48 Handling Charge pay250 UPS Add $300 COD $300 extra PP APO FPO 1623 57th St Lubbock TX 79412States Weaccaps Visapersonal checks orcoD 616% tax Texas US currency Minimum Wood Order 81000 Yg lined up runway wrong ma neuver starts enter final crosswind leg what would normally traffic pattern correct procedure call maneuver Start ing now turn onto crosswind leg maneuver complete until youve climbed Out same just made takeoff should called Complete before FM event maneuver complete until turn-out made just FAd takeoff Overshoot meant power dive Fly Past actuality imaginary pilot model attempting make landing spot front judges sometimes happens full-scale approach has brought him little too high too long Realizing hes down altitude less 10 ft throttle idle no hope hitting spot full throttle applied Level flight main tained until climbing speed attained model climbs out taldng off Overshoot maneuver well suited type alrcraft Its very pretty watch wben per formed properly can garner good flight points right wrong however its supposed simplicity may earn wrath judges BOM nile What majority todays Scale modelers really want Ive read editorials rules proposals recently favor event Scale competition would eliminate Builder Model rule Various names have applied proposals read suggestions have wonder just deeply self-styled modelers proposing events actually involved Scale model ing interested enough Scale read AMA rule books would realize have already given what theyre asking Its called RC Fun Scale Event No 520 its Provisional event added last year express purpose allowing modelers inter ested enjoying flying Scale model air craft participate competition having built models themselves advent prebuilt ready-built Scale models todays market great modelers have chosen take route cross section Scale modelers considered however wonder great per centage nonbuilder competition Scale fliers really compared against percentage enjoy building aspect Scale much maybe flying what Ive seen since event intro duced doesnt seem much interest havent seen event run some larger Scale contests such Mint Julep Scale Meet 88 Mats reviewing Scale Dimension newsletter Scale Squadron Southern California havent seen great deal interest RC Fun Scale either Does mean no interest simply todays modeler aware Next time get chance turn page 109 1988-1989 AMA Competition Regulations book read about RC Fun Scale just might find what youve asking has already given has Provisional status support want keep May skies remain Scale RC AerobaticsNan Putte Continued page 55 have informed secondhandbut reliable sourcethat 1989 Team Selection Fi nals Masters Tournament will held Pensacola FL June 15-18 Sauffley Field Boy will nice Its 50 miles away home can sleep own bed night still activities cancome down Masters site confirmed flying Site Navy landing field just north Gulf Shores FL about 34 miles Pensacola dates men tioned Van Putte correct See com plete announcement Competition Newslet ter section magazine RMcM old flying buddies will shocked hear am almost ready fly new air vehicle am slow building sur prise since its garden variety Pattern air plane Helicopter resisted impulse buy years before finally deciding get X-Cell 50 Miniature Aircraft No dont plan bore Helicopter exploits just few first impression opening box must million parts Ac tually theres fewer 500 Construction now about three-quarters complete Ill prob ably terrify myself onlookers first flight about two weeks RC Soaring/Blakeslee Continued page 57 pate International class FM designates F models 3 RC B Thermal Soaring fliers although active F3B still like keep abreast developments class because its leading edge Soaring often foretells design ideas eventually filter down us other hand sizeable group exclaims have no interest F3B try re spect points view include different types material column month worked Out theres quite run F3B stuff following dont need read itbut think youll missing something dont beginner F3B piece written Jim Sonnenmeier member Clarence SailHARD MAPLE 1 4 8 38 38 1 2 31834 1234 18 40 45 SO 68 66 BALSA HOT LINE Coil 1806 745 6394 10 am 6 pm Central Time 48 586 625 625 625 725 800