Contml Line Scale Bill Boss ELECTRIC Control Line flight know out have tried experimenting Electric Control Line flight Clancy Aarnold Lawrence IN along Jack Sheeks Indianapolis IN has sent first real evidence activity exists Electric Control Line activities Ill talking about took place Forest Manor School Indianapolis through cooperation teacher Roger Wathen other gym instructors school Roger quite familiar model flying known use model aircraft school work As can seen accompanying photos nothing exotic about system models flown Clancy Jack Guillows Cessna 170 Cox Focke-Wulf l90A Stunter sold Cox AA engine Clancy used homemade 24-volt battery pack standard two-line CL handle 25-ohm rheostat mounted top handle motor speed control Fly ing lines made No 28 insulated magnet wire resulted voltage drop three volts per 50 feet wire motor drawing two amperes use small nylon bellcrank provid ed both means terminating con trol wires insulated manner within model providing point con nection motor leads Please note picture Clancy fuse holder black spot left side battery pack fuse put positive lead side pack very important safety standpoint holder contains five-ampere fuse slightly larger motor starting current will blow under normal flying conditions However should short circuit occur place system fuse will blow preventing hot wires could cause personal injury possible fire model Cessna powered slot car motor known Parma Womp geared down 4-to- 1 driving 5% plastic rubber model propeller good things about flying Elec tric no fuels therefore no need fuel proofing allowing light est possible model help keep over weight Cessna down its 38 ounces covered Micafilm total weight also included 6 grams out board wing tip weight said half weight 25 feet flying wire used much said about Focke-Wulf model tested except met girder wing over put rest During initial flying Clancy found 25-ohm two-watt rheostat used speed control did stand up current drawn 25-ohm value OK speed control wattage large enough standard slot car motorcontroller later substituted found completely satisfactory thats about Arnold-Sheeks report electric CL flight Before closing completely months main subject would like note rules proposal SC-86-35 present ly before CL Scale Contest Boards establishment Electric Con trol Line event have thoughts subject please let district Contest Board members know about also engaged experi menting CL Electric flight drop line about activitiesalso send pictures Tips tires Are having problems tires flattening under weight Continued page 161 66 Model Aviation Beautlfuliyfinished Lockheed P-38 Lightning work Joe Averitt Miami Beach FL Built Guillow stick-andtissue rubberpower kit its beefedup uses two OS Max 10 engines Models such would prime candidates electric power CL Electric flightthe main theme Bills column month Bob Rich Photos ThIS IS nof escapee Trom 1-rankenstein movie 11 CIancy Arnold Lawrence IN has control handle eiectric powered CL model left hand handle otor-speed-control potentiometer top battery pack strapped around waist model hes flying Cessna 170 also Guiliow kit Roger Wathen R teacher Forest Manor School Indianapolis IN flight testing done uses much modeling activity students two models used trial indoor Electric CL flying L R Guiliows Cessna 170 taxiing takeoff Cox FWlgO has itI Due allght miscalculation Wing Over attempted 25ft lines under 23ft ceiling B Ill has lots say about series experiments column Photos y Arnold F 95 Engines Engineered Meet Demands Most Discriminating Modeler Backed Service match Engines have points easy starting carburetor linkage crankcase tapped smoke adapter SACHSDOL MAR 31 50 lIP-S lbs 11 oz 285w 31 0 Muffleri SACHSDOL MAR 37 65 HP-B lbs 15 oz 325k 34500 Muffler COBRA *KIORITZ 24*The New Standard *The Work Horse*For Giant Models *32HP-6AIbs* 31HP-5Albs * 169~* 149~ * ct Sales Only* ct Sales Only engines ready run including 6 bolt prop hub mount mounting bolts Mufflers props tanks oil spark puigs etc available extra charge ___T G MFG 857 High Mountain Rd North Haledon NJ 07508 Phone 1-201-427-3845 patent seemingly novel solution problem learns through list references cited problem has attacked different ways different inventors many years Copies patents can obtained writing Commissioner Patents Trademarks Washington DC 20231 current price $1 00/copy Questions comments concerning article can addressed author Jan P Koniarek 154 So State Rd Briarcliff Manor NY 10510 References further reading 1 AK Berle LS de Camp Inventions Patents Management D Van Nostrand Company Inc Princeton NJ 1959 2 AJ Sabin Greatest Invention Since. Pt Radio Control Modeler May 1977 p 23 3 AJ Sabin Greatest Invention Since. Pt II Radio Control Modeler June 1977 p 54 4 General Information Concerning Patents US Department Commerce Patent Trademark Office Washington DC 1983 BW gent name Bill Winter Writes column makes reading fun ramblin wakes memories makes stir As story leisurely spun Lou Roberts CL Scale/Boss Continued page 66 scale model suggested solution found Wing Tips newsletter Wingbusters MAC Hanson MA suggested use Robart similar type tires buy nextsize smaller tire install rim inside tire installed model double-thickness tires should solve flat-tire problem US FAI Scale team selection pro gram 1986 RC CL Scale World Championships has set motion appointment AMA President John Grigg John Guenther president National Association Scale Aeromodelers NASA Chairman FAI Team Selection Committee committee made up member AMA Districts date Districts 1 3 5 8 10 have named committee members urgent districts represented maximum input can given selection flying site judges support personnel date event last team selection program run NASA Louisville KY cooperation Kentucky Department State Parks Southern Indiana RC Modelers Inc addition needing committee members districts still 4& Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs Only appointed NASA would interested hearing individuals organi zations would willing assist project interested help ing project please contact AMA district VP NASA President John Guenther might also wise let NASA know plan partici pant competitor next team selec tion event way NASA will get some idea number competitors plan will also position inform directly about program details such date place fees etc finalized Send correspon dence John Guenther Box 715 RR #1 Borden IN 47106 Support scale model ing joining NASA Dues $600 yearly Send money John Guenther above address Join now Mustang Lovers received note Charles Neely Visalia CA told has considerable amount detail available models North American Mustang has threequarter inch foot drawings available four sheets 24 x 36 inches P-s lB/C models will have drawings D late K versions just about time will reading column Cost drawings $1500 per set Also included drawings set notes explaining various differences models based production location ongoing development aircraft April1985 161 3 x 5 Easy Mounting standard Power Panel shown also available two new versions smaller $2695Mn Panel flexible Dual Range P gives option 1-1/2 2 volts glow plug addition above drawings Charles can provide microfilm printouts 15 cents almost specific Mustang detail might need Send requests drawings other Mustang details Charle L Neely 2703 E Goshen Ave Visalia CA 93291 Bill Boss 77-06 269th St New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 67 flapped unflapped can make abrupt pitch change 90 achieving positive geometric angle attack body angle relative wind can certainly understand came possession beachfront prop erty hes trying palm off Take look drawing similar Als addition two pieces information two items lift vector center gravity CG major factors phenomenon known pitching moment Stunt glossary moment prod uct force applied over given dis tance fulcrum Stunt ship CG fulcrum forces applied will cause ship react about CG Ergo 50 pounds lift applied 1 inches aft CG will produce 75 inch-pounds torque about CG Weight acts upon airframe center gravity CG com petitive Stunters gas tank empty located approximately 16% aft leading edge mean chord can either take word go measure some plans did reassure myself measured Als Mustunts found 16-percenters well lift vector located center lift always point aft CG really always exceptions arent germane Stunt design center lift symmetrical airfoil located 25% mean chord cambered airfoils such symmetri cal wing flaps deflected fur ther aft varying forward maximum 25% aft maximum infinity As can see net result lift weight vectors nose-down force level flight pitching moment smallbut still exists stabilizing function tall surfaces comes play tail must supply slight download overcome negative pitching moment wings angle attack increased lift pro duced exactly equals weight air craft plus download tall stable level flight will malntained answers recurring question symmetrical non-lifting airfoil can fly straight level CG moved aft center lift moment will become destabilizing ship will fly level l-heavy experience can relate Back drawing suddenly deflect flaps square-cornered maneuver instantly dramatically increase lift vector addition since point lift centered moves aft cambered surface now have have also increased distance between CG center lift result changes dramatically increased pitching moment despite generally vertical com ponent acts behind CG will thus result aircraft pitching nose-down doubt disconnect eleva tors turn ship flaps Hint Use old airplane practice adverse pitching mo ment Stunt ship overcome very powerful horizontal tall surfaces coupled flaps rotate ship about center gravity desired body angle. coincidentally achieving posi tive body-angle relative wind thus introducing necessary prerequisites P-effects become factor Heh heh heh Snuck didnt Lets make some general statements flaps foregoing mind First flaps increase lift turn airplane fact retard rate turn ship stable pitch axis ie CG ahead center lift Second since increase lift primary advantage Stunter allow Continued page 164 ENGINEERING 201 SE l2thStreet Pompano Beach FL 33060 305-785-7978 THE tANDING GEAB PEOPLE Tired kit landing gears dont lit biggie properly tI & 0 Engineena can 010 problems * Custom built needs & specs guaranteed lit * Strong & durable withstand toughoet aiding * It & 0 Engineeriog gear will work & keep biggie hying * In stock replacoinent gear tar popular models Byron PItIs Chnsten Eagle CAP 21 Balsa liSA J3 CUB Air Tach Pawn Eagle Nose Big Stick Champ Citabria B & B models Snapper Stinger Snapper Too 162 Model Aviation P0 OOX 3957TORRANCE CA 90510 FA RUBBER Sizes1I43116l/83I32 1116 1mm thick 042 Boxed 16 oz rubber per box Price $1250 per box ppd USA Calif residents add 6% sales taxi Coupe VIII $2395 plus UPS Finished prop- Very very comptete SEND 50 FOR 190411905 CATALOG FAI Model Supply
Edition: Model Aviation - 1985/04
Page Numbers: 66, 161, 162
Contml Line Scale Bill Boss ELECTRIC Control Line flight know out have tried experimenting Electric Control Line flight Clancy Aarnold Lawrence IN along Jack Sheeks Indianapolis IN has sent first real evidence activity exists Electric Control Line activities Ill talking about took place Forest Manor School Indianapolis through cooperation teacher Roger Wathen other gym instructors school Roger quite familiar model flying known use model aircraft school work As can seen accompanying photos nothing exotic about system models flown Clancy Jack Guillows Cessna 170 Cox Focke-Wulf l90A Stunter sold Cox AA engine Clancy used homemade 24-volt battery pack standard two-line CL handle 25-ohm rheostat mounted top handle motor speed control Fly ing lines made No 28 insulated magnet wire resulted voltage drop three volts per 50 feet wire motor drawing two amperes use small nylon bellcrank provid ed both means terminating con trol wires insulated manner within model providing point con nection motor leads Please note picture Clancy fuse holder black spot left side battery pack fuse put positive lead side pack very important safety standpoint holder contains five-ampere fuse slightly larger motor starting current will blow under normal flying conditions However should short circuit occur place system fuse will blow preventing hot wires could cause personal injury possible fire model Cessna powered slot car motor known Parma Womp geared down 4-to- 1 driving 5% plastic rubber model propeller good things about flying Elec tric no fuels therefore no need fuel proofing allowing light est possible model help keep over weight Cessna down its 38 ounces covered Micafilm total weight also included 6 grams out board wing tip weight said half weight 25 feet flying wire used much said about Focke-Wulf model tested except met girder wing over put rest During initial flying Clancy found 25-ohm two-watt rheostat used speed control did stand up current drawn 25-ohm value OK speed control wattage large enough standard slot car motorcontroller later substituted found completely satisfactory thats about Arnold-Sheeks report electric CL flight Before closing completely months main subject would like note rules proposal SC-86-35 present ly before CL Scale Contest Boards establishment Electric Con trol Line event have thoughts subject please let district Contest Board members know about also engaged experi menting CL Electric flight drop line about activitiesalso send pictures Tips tires Are having problems tires flattening under weight Continued page 161 66 Model Aviation Beautlfuliyfinished Lockheed P-38 Lightning work Joe Averitt Miami Beach FL Built Guillow stick-andtissue rubberpower kit its beefedup uses two OS Max 10 engines Models such would prime candidates electric power CL Electric flightthe main theme Bills column month Bob Rich Photos ThIS IS nof escapee Trom 1-rankenstein movie 11 CIancy Arnold Lawrence IN has control handle eiectric powered CL model left hand handle otor-speed-control potentiometer top battery pack strapped around waist model hes flying Cessna 170 also Guiliow kit Roger Wathen R teacher Forest Manor School Indianapolis IN flight testing done uses much modeling activity students two models used trial indoor Electric CL flying L R Guiliows Cessna 170 taxiing takeoff Cox FWlgO has itI Due allght miscalculation Wing Over attempted 25ft lines under 23ft ceiling B Ill has lots say about series experiments column Photos y Arnold F 95 Engines Engineered Meet Demands Most Discriminating Modeler Backed Service match Engines have points easy starting carburetor linkage crankcase tapped smoke adapter SACHSDOL MAR 31 50 lIP-S lbs 11 oz 285w 31 0 Muffleri SACHSDOL MAR 37 65 HP-B lbs 15 oz 325k 34500 Muffler COBRA *KIORITZ 24*The New Standard *The Work Horse*For Giant Models *32HP-6AIbs* 31HP-5Albs * 169~* 149~ * ct Sales Only* ct Sales Only engines ready run including 6 bolt prop hub mount mounting bolts Mufflers props tanks oil spark puigs etc available extra charge ___T G MFG 857 High Mountain Rd North Haledon NJ 07508 Phone 1-201-427-3845 patent seemingly novel solution problem learns through list references cited problem has attacked different ways different inventors many years Copies patents can obtained writing Commissioner Patents Trademarks Washington DC 20231 current price $1 00/copy Questions comments concerning article can addressed author Jan P Koniarek 154 So State Rd Briarcliff Manor NY 10510 References further reading 1 AK Berle LS de Camp Inventions Patents Management D Van Nostrand Company Inc Princeton NJ 1959 2 AJ Sabin Greatest Invention Since. Pt Radio Control Modeler May 1977 p 23 3 AJ Sabin Greatest Invention Since. Pt II Radio Control Modeler June 1977 p 54 4 General Information Concerning Patents US Department Commerce Patent Trademark Office Washington DC 1983 BW gent name Bill Winter Writes column makes reading fun ramblin wakes memories makes stir As story leisurely spun Lou Roberts CL Scale/Boss Continued page 66 scale model suggested solution found Wing Tips newsletter Wingbusters MAC Hanson MA suggested use Robart similar type tires buy nextsize smaller tire install rim inside tire installed model double-thickness tires should solve flat-tire problem US FAI Scale team selection pro gram 1986 RC CL Scale World Championships has set motion appointment AMA President John Grigg John Guenther president National Association Scale Aeromodelers NASA Chairman FAI Team Selection Committee committee made up member AMA Districts date Districts 1 3 5 8 10 have named committee members urgent districts represented maximum input can given selection flying site judges support personnel date event last team selection program run NASA Louisville KY cooperation Kentucky Department State Parks Southern Indiana RC Modelers Inc addition needing committee members districts still 4& Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs Only appointed NASA would interested hearing individuals organi zations would willing assist project interested help ing project please contact AMA district VP NASA President John Guenther might also wise let NASA know plan partici pant competitor next team selec tion event way NASA will get some idea number competitors plan will also position inform directly about program details such date place fees etc finalized Send correspon dence John Guenther Box 715 RR #1 Borden IN 47106 Support scale model ing joining NASA Dues $600 yearly Send money John Guenther above address Join now Mustang Lovers received note Charles Neely Visalia CA told has considerable amount detail available models North American Mustang has threequarter inch foot drawings available four sheets 24 x 36 inches P-s lB/C models will have drawings D late K versions just about time will reading column Cost drawings $1500 per set Also included drawings set notes explaining various differences models based production location ongoing development aircraft April1985 161 3 x 5 Easy Mounting standard Power Panel shown also available two new versions smaller $2695Mn Panel flexible Dual Range P gives option 1-1/2 2 volts glow plug addition above drawings Charles can provide microfilm printouts 15 cents almost specific Mustang detail might need Send requests drawings other Mustang details Charle L Neely 2703 E Goshen Ave Visalia CA 93291 Bill Boss 77-06 269th St New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 67 flapped unflapped can make abrupt pitch change 90 achieving positive geometric angle attack body angle relative wind can certainly understand came possession beachfront prop erty hes trying palm off Take look drawing similar Als addition two pieces information two items lift vector center gravity CG major factors phenomenon known pitching moment Stunt glossary moment prod uct force applied over given dis tance fulcrum Stunt ship CG fulcrum forces applied will cause ship react about CG Ergo 50 pounds lift applied 1 inches aft CG will produce 75 inch-pounds torque about CG Weight acts upon airframe center gravity CG com petitive Stunters gas tank empty located approximately 16% aft leading edge mean chord can either take word go measure some plans did reassure myself measured Als Mustunts found 16-percenters well lift vector located center lift always point aft CG really always exceptions arent germane Stunt design center lift symmetrical airfoil located 25% mean chord cambered airfoils such symmetri cal wing flaps deflected fur ther aft varying forward maximum 25% aft maximum infinity As can see net result lift weight vectors nose-down force level flight pitching moment smallbut still exists stabilizing function tall surfaces comes play tail must supply slight download overcome negative pitching moment wings angle attack increased lift pro duced exactly equals weight air craft plus download tall stable level flight will malntained answers recurring question symmetrical non-lifting airfoil can fly straight level CG moved aft center lift moment will become destabilizing ship will fly level l-heavy experience can relate Back drawing suddenly deflect flaps square-cornered maneuver instantly dramatically increase lift vector addition since point lift centered moves aft cambered surface now have have also increased distance between CG center lift result changes dramatically increased pitching moment despite generally vertical com ponent acts behind CG will thus result aircraft pitching nose-down doubt disconnect eleva tors turn ship flaps Hint Use old airplane practice adverse pitching mo ment Stunt ship overcome very powerful horizontal tall surfaces coupled flaps rotate ship about center gravity desired body angle. coincidentally achieving posi tive body-angle relative wind thus introducing necessary prerequisites P-effects become factor Heh heh heh Snuck didnt Lets make some general statements flaps foregoing mind First flaps increase lift turn airplane fact retard rate turn ship stable pitch axis ie CG ahead center lift Second since increase lift primary advantage Stunter allow Continued page 164 ENGINEERING 201 SE l2thStreet Pompano Beach FL 33060 305-785-7978 THE tANDING GEAB PEOPLE Tired kit landing gears dont lit biggie properly tI & 0 Engineena can 010 problems * Custom built needs & specs guaranteed lit * Strong & durable withstand toughoet aiding * It & 0 Engineeriog gear will work & keep biggie hying * In stock replacoinent gear tar popular models Byron PItIs Chnsten Eagle CAP 21 Balsa liSA J3 CUB Air Tach Pawn Eagle Nose Big Stick Champ Citabria B & B models Snapper Stinger Snapper Too 162 Model Aviation P0 OOX 3957TORRANCE CA 90510 FA RUBBER Sizes1I43116l/83I32 1116 1mm thick 042 Boxed 16 oz rubber per box Price $1250 per box ppd USA Calif residents add 6% sales taxi Coupe VIII $2395 plus UPS Finished prop- Very very comptete SEND 50 FOR 190411905 CATALOG FAI Model Supply
Edition: Model Aviation - 1985/04
Page Numbers: 66, 161, 162
Contml Line Scale Bill Boss ELECTRIC Control Line flight know out have tried experimenting Electric Control Line flight Clancy Aarnold Lawrence IN along Jack Sheeks Indianapolis IN has sent first real evidence activity exists Electric Control Line activities Ill talking about took place Forest Manor School Indianapolis through cooperation teacher Roger Wathen other gym instructors school Roger quite familiar model flying known use model aircraft school work As can seen accompanying photos nothing exotic about system models flown Clancy Jack Guillows Cessna 170 Cox Focke-Wulf l90A Stunter sold Cox AA engine Clancy used homemade 24-volt battery pack standard two-line CL handle 25-ohm rheostat mounted top handle motor speed control Fly ing lines made No 28 insulated magnet wire resulted voltage drop three volts per 50 feet wire motor drawing two amperes use small nylon bellcrank provid ed both means terminating con trol wires insulated manner within model providing point con nection motor leads Please note picture Clancy fuse holder black spot left side battery pack fuse put positive lead side pack very important safety standpoint holder contains five-ampere fuse slightly larger motor starting current will blow under normal flying conditions However should short circuit occur place system fuse will blow preventing hot wires could cause personal injury possible fire model Cessna powered slot car motor known Parma Womp geared down 4-to- 1 driving 5% plastic rubber model propeller good things about flying Elec tric no fuels therefore no need fuel proofing allowing light est possible model help keep over weight Cessna down its 38 ounces covered Micafilm total weight also included 6 grams out board wing tip weight said half weight 25 feet flying wire used much said about Focke-Wulf model tested except met girder wing over put rest During initial flying Clancy found 25-ohm two-watt rheostat used speed control did stand up current drawn 25-ohm value OK speed control wattage large enough standard slot car motorcontroller later substituted found completely satisfactory thats about Arnold-Sheeks report electric CL flight Before closing completely months main subject would like note rules proposal SC-86-35 present ly before CL Scale Contest Boards establishment Electric Con trol Line event have thoughts subject please let district Contest Board members know about also engaged experi menting CL Electric flight drop line about activitiesalso send pictures Tips tires Are having problems tires flattening under weight Continued page 161 66 Model Aviation Beautlfuliyfinished Lockheed P-38 Lightning work Joe Averitt Miami Beach FL Built Guillow stick-andtissue rubberpower kit its beefedup uses two OS Max 10 engines Models such would prime candidates electric power CL Electric flightthe main theme Bills column month Bob Rich Photos ThIS IS nof escapee Trom 1-rankenstein movie 11 CIancy Arnold Lawrence IN has control handle eiectric powered CL model left hand handle otor-speed-control potentiometer top battery pack strapped around waist model hes flying Cessna 170 also Guiliow kit Roger Wathen R teacher Forest Manor School Indianapolis IN flight testing done uses much modeling activity students two models used trial indoor Electric CL flying L R Guiliows Cessna 170 taxiing takeoff Cox FWlgO has itI Due allght miscalculation Wing Over attempted 25ft lines under 23ft ceiling B Ill has lots say about series experiments column Photos y Arnold F 95 Engines Engineered Meet Demands Most Discriminating Modeler Backed Service match Engines have points easy starting carburetor linkage crankcase tapped smoke adapter SACHSDOL MAR 31 50 lIP-S lbs 11 oz 285w 31 0 Muffleri SACHSDOL MAR 37 65 HP-B lbs 15 oz 325k 34500 Muffler COBRA *KIORITZ 24*The New Standard *The Work Horse*For Giant Models *32HP-6AIbs* 31HP-5Albs * 169~* 149~ * ct Sales Only* ct Sales Only engines ready run including 6 bolt prop hub mount mounting bolts Mufflers props tanks oil spark puigs etc available extra charge ___T G MFG 857 High Mountain Rd North Haledon NJ 07508 Phone 1-201-427-3845 patent seemingly novel solution problem learns through list references cited problem has attacked different ways different inventors many years Copies patents can obtained writing Commissioner Patents Trademarks Washington DC 20231 current price $1 00/copy Questions comments concerning article can addressed author Jan P Koniarek 154 So State Rd Briarcliff Manor NY 10510 References further reading 1 AK Berle LS de Camp Inventions Patents Management D Van Nostrand Company Inc Princeton NJ 1959 2 AJ Sabin Greatest Invention Since. Pt Radio Control Modeler May 1977 p 23 3 AJ Sabin Greatest Invention Since. Pt II Radio Control Modeler June 1977 p 54 4 General Information Concerning Patents US Department Commerce Patent Trademark Office Washington DC 1983 BW gent name Bill Winter Writes column makes reading fun ramblin wakes memories makes stir As story leisurely spun Lou Roberts CL Scale/Boss Continued page 66 scale model suggested solution found Wing Tips newsletter Wingbusters MAC Hanson MA suggested use Robart similar type tires buy nextsize smaller tire install rim inside tire installed model double-thickness tires should solve flat-tire problem US FAI Scale team selection pro gram 1986 RC CL Scale World Championships has set motion appointment AMA President John Grigg John Guenther president National Association Scale Aeromodelers NASA Chairman FAI Team Selection Committee committee made up member AMA Districts date Districts 1 3 5 8 10 have named committee members urgent districts represented maximum input can given selection flying site judges support personnel date event last team selection program run NASA Louisville KY cooperation Kentucky Department State Parks Southern Indiana RC Modelers Inc addition needing committee members districts still 4& Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord Mating Plugs Only appointed NASA would interested hearing individuals organi zations would willing assist project interested help ing project please contact AMA district VP NASA President John Guenther might also wise let NASA know plan partici pant competitor next team selec tion event way NASA will get some idea number competitors plan will also position inform directly about program details such date place fees etc finalized Send correspon dence John Guenther Box 715 RR #1 Borden IN 47106 Support scale model ing joining NASA Dues $600 yearly Send money John Guenther above address Join now Mustang Lovers received note Charles Neely Visalia CA told has considerable amount detail available models North American Mustang has threequarter inch foot drawings available four sheets 24 x 36 inches P-s lB/C models will have drawings D late K versions just about time will reading column Cost drawings $1500 per set Also included drawings set notes explaining various differences models based production location ongoing development aircraft April1985 161 3 x 5 Easy Mounting standard Power Panel shown also available two new versions smaller $2695Mn Panel flexible Dual Range P gives option 1-1/2 2 volts glow plug addition above drawings Charles can provide microfilm printouts 15 cents almost specific Mustang detail might need Send requests drawings other Mustang details Charle L Neely 2703 E Goshen Ave Visalia CA 93291 Bill Boss 77-06 269th St New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 67 flapped unflapped can make abrupt pitch change 90 achieving positive geometric angle attack body angle relative wind can certainly understand came possession beachfront prop erty hes trying palm off Take look drawing similar Als addition two pieces information two items lift vector center gravity CG major factors phenomenon known pitching moment Stunt glossary moment prod uct force applied over given dis tance fulcrum Stunt ship CG fulcrum forces applied will cause ship react about CG Ergo 50 pounds lift applied 1 inches aft CG will produce 75 inch-pounds torque about CG Weight acts upon airframe center gravity CG com petitive Stunters gas tank empty located approximately 16% aft leading edge mean chord can either take word go measure some plans did reassure myself measured Als Mustunts found 16-percenters well lift vector located center lift always point aft CG really always exceptions arent germane Stunt design center lift symmetrical airfoil located 25% mean chord cambered airfoils such symmetri cal wing flaps deflected fur ther aft varying forward maximum 25% aft maximum infinity As can see net result lift weight vectors nose-down force level flight pitching moment smallbut still exists stabilizing function tall surfaces comes play tail must supply slight download overcome negative pitching moment wings angle attack increased lift pro duced exactly equals weight air craft plus download tall stable level flight will malntained answers recurring question symmetrical non-lifting airfoil can fly straight level CG moved aft center lift moment will become destabilizing ship will fly level l-heavy experience can relate Back drawing suddenly deflect flaps square-cornered maneuver instantly dramatically increase lift vector addition since point lift centered moves aft cambered surface now have have also increased distance between CG center lift result changes dramatically increased pitching moment despite generally vertical com ponent acts behind CG will thus result aircraft pitching nose-down doubt disconnect eleva tors turn ship flaps Hint Use old airplane practice adverse pitching mo ment Stunt ship overcome very powerful horizontal tall surfaces coupled flaps rotate ship about center gravity desired body angle. coincidentally achieving posi tive body-angle relative wind thus introducing necessary prerequisites P-effects become factor Heh heh heh Snuck didnt Lets make some general statements flaps foregoing mind First flaps increase lift turn airplane fact retard rate turn ship stable pitch axis ie CG ahead center lift Second since increase lift primary advantage Stunter allow Continued page 164 ENGINEERING 201 SE l2thStreet Pompano Beach FL 33060 305-785-7978 THE tANDING GEAB PEOPLE Tired kit landing gears dont lit biggie properly tI & 0 Engineena can 010 problems * Custom built needs & specs guaranteed lit * Strong & durable withstand toughoet aiding * It & 0 Engineeriog gear will work & keep biggie hying * In stock replacoinent gear tar popular models Byron PItIs Chnsten Eagle CAP 21 Balsa liSA J3 CUB Air Tach Pawn Eagle Nose Big Stick Champ Citabria B & B models Snapper Stinger Snapper Too 162 Model Aviation P0 OOX 3957TORRANCE CA 90510 FA RUBBER Sizes1I43116l/83I32 1116 1mm thick 042 Boxed 16 oz rubber per box Price $1250 per box ppd USA Calif residents add 6% sales taxi Coupe VIII $2395 plus UPS Finished prop- Very very comptete SEND 50 FOR 190411905 CATALOG FAI Model Supply