that v have copters vhy shoL NO OCR TEXT IoO3 / 2 22 23 15 6 14 0 4 21 20 26 188 DIA 1~ 0 K 1325125 OIA 0 o 82 mr vi 37 DA i-JIo 50 DIA 02 KERF-42PLAT9O ~ir7 / Tr 1/\ 094 DIA625 DIA 3 PL [N II i 0 I50-2 SPIITEM jI REQD U K 3 I 000 350t~I ilL 096 O1A 189 DIA ITEM 4 475O - DIA UIn II ON 125 PL 3 REQD 632 THO 25 OP DIA DIA /067D1A7 4 0 ITEM 61 R0DITEM 71 REQO 189 IA 375 140Ifl 4 094 DIA ITEM 2 3 REQD 295 1500 no THD hA Ll -r DIA -1I 00 0 s 0 0 O~O 0 0g0 0.00 WB 0 S 0 0 0 0 0 0 I. 0 ~oEC 0 4-Q 4- 00 0 ITEI OR LFT N TING BJ compot componi componei blade attack bi attach e wind velocity ef ROTOR DISC ES FLAPPING DISC BACKWARJ 50 inches pIacement ottle n model helicopi g see-saw bi rotor ing blace m retr blade would tnat its vertical rely reduces its s lift Notice angle t airspeed ROTOR Sc NOT BLADE slogans taught us Dental School Dee B Mathews 506 S Walnut Greensburg KS 67054 Taming Autogiro/Kuhnle continued page 38 located slightly forward rotor force resulting nose-down pitching moment counterbalanced setting stabilizer pushed tail down same force arrangement used fixed wing planes except rotor force replaces combined lift-drag force wing good wing has relatively little drag lift-drag resultant almost vertical CG appears almost directly below wings center lift churning rotor blades create large amounts drag rotor force inclined relatively large angle respect vertical addition rotor usually located much higher above CG wing Because two factors though CG located slightly forward rotor force CG will located relatively large distance front rotors center giv ing erroneous impression center lift forward rotors cen ter proper location CG autogiro determined flight testing about three inches forward center rotor held loosely rotor hub fuselage hangs nose down angle about 20 degrees horizontal rotor disc tips back about 18 degrees thus confirming CG should lie slightly forward line drawn through center rotor perpen dicular plane blade tips rotate autogiros forward speed causes rotor disc tilt backward respect rotor shaft rotor disc also tilts sideways high retreating blade side due interaction between ward speed coning angle blades rotor force tilted side ways tending roll autogiro away retreating blade side rotor autogiro turns clockwise seen above side tilt rotor disc tries roll giro left can counteracted devon trim found satisfactory tilt top rotor shaft about three degrees retreating blade side right side Before building autogiro searched through large collection model maga zines found little useful information However did find book Aero dynamics Helicopter Gessow Myers Frederick Ungar Publishing Co NY very helpful understanding rotor blade motion [When writing advertisers mention read about Model Aviation CL ScalelGretz continued page 44 metering jet through spray orifices metered charge mixed air resulting combustible mix ture fuel air under pressure opens valve passes com bustion chamber fired spark plug receives its initial electric impulse external spark coil pressure resulting combustion closes valve sets up pressure wave tail pipe engine Once initial charge has inducted fired above opera tion automatic No further external forced air supply spark required pressure wave set up exhaust pipe firing initial charge cyclical nature first becomes negative pressure drawing another tered charge gasoline air through valve combustion chamber next becomes positive pressure closing valve firing new charge air hot gasses re maining previous combustion process repeated automatically rate 220-240 times per second long gasoline air supplied Well let Sam finish story unique brand CL Scale flying XF-92A weighs 6 lbs complete flies approximately 21 laps speed 85-90 mph built model 1974 using old set plans Air Trails magazine 1954 scale 1 inch foot has wingspan 31 inches 44 inches length Its built crutch using plywood formers bal sa planking Its finished Aero-Gloss white Air Force markings model lined internally layer asbestos paper two layers heavy-duty aluminum Reynolds Wrap foil using water-glass adhesive Around Dyna-Jet aluminum shroud 020 thick e between Dyna-Jet shroud approximately 1/2 between shroud insulation keep model catching fire Waterglass adhesive will burn As letter model has over 100 flights no problems need pit crew three people start jet holds model presses button spark coil operates air pump stay handle always airborne within two minutes ship lands open hatch pump air around Dyna-Jet cool down have building scale jets since 1954 1 flew XF-92A demo Aerolympics Scale WC 1974 Lakehurst New Jersey April 1978 1 flew model RC CL show Teterboro Airport Jay Gerber AMA HQ took film se quence jet hope will new all-scale film making needs information assistance 102 Model Aviation new CLASSIC kit prom FLYII LAKES Trainer 40 span 0925 power 4 channeLs nc $3495 complete catalog See dealer NOW No107 Fairchild 22 48 span 0915 power 3 channeLs nc $2995 FLYLINE MODELS INC 2020 DORR AVENUE B 2 FAIRFAX VIRGINIA 22031703 5732030 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT s Enterprises PLANES1356 Ervin Road BOATSPO Box 227 CARSPangles Center TRAINSVan Wert OH 45896 4 Joe Guylas 4191 238-2625 WE BUY OR TRADE OLD ENGINES AND KITS
Edition: Model Aviation - 1979/03
Page Numbers: 34, 35, 36, 37, 38, 102
that v have copters vhy shoL NO OCR TEXT IoO3 / 2 22 23 15 6 14 0 4 21 20 26 188 DIA 1~ 0 K 1325125 OIA 0 o 82 mr vi 37 DA i-JIo 50 DIA 02 KERF-42PLAT9O ~ir7 / Tr 1/\ 094 DIA625 DIA 3 PL [N II i 0 I50-2 SPIITEM jI REQD U K 3 I 000 350t~I ilL 096 O1A 189 DIA ITEM 4 475O - DIA UIn II ON 125 PL 3 REQD 632 THO 25 OP DIA DIA /067D1A7 4 0 ITEM 61 R0DITEM 71 REQO 189 IA 375 140Ifl 4 094 DIA ITEM 2 3 REQD 295 1500 no THD hA Ll -r DIA -1I 00 0 s 0 0 O~O 0 0g0 0.00 WB 0 S 0 0 0 0 0 0 I. 0 ~oEC 0 4-Q 4- 00 0 ITEI OR LFT N TING BJ compot componi componei blade attack bi attach e wind velocity ef ROTOR DISC ES FLAPPING DISC BACKWARJ 50 inches pIacement ottle n model helicopi g see-saw bi rotor ing blace m retr blade would tnat its vertical rely reduces its s lift Notice angle t airspeed ROTOR Sc NOT BLADE slogans taught us Dental School Dee B Mathews 506 S Walnut Greensburg KS 67054 Taming Autogiro/Kuhnle continued page 38 located slightly forward rotor force resulting nose-down pitching moment counterbalanced setting stabilizer pushed tail down same force arrangement used fixed wing planes except rotor force replaces combined lift-drag force wing good wing has relatively little drag lift-drag resultant almost vertical CG appears almost directly below wings center lift churning rotor blades create large amounts drag rotor force inclined relatively large angle respect vertical addition rotor usually located much higher above CG wing Because two factors though CG located slightly forward rotor force CG will located relatively large distance front rotors center giv ing erroneous impression center lift forward rotors cen ter proper location CG autogiro determined flight testing about three inches forward center rotor held loosely rotor hub fuselage hangs nose down angle about 20 degrees horizontal rotor disc tips back about 18 degrees thus confirming CG should lie slightly forward line drawn through center rotor perpen dicular plane blade tips rotate autogiros forward speed causes rotor disc tilt backward respect rotor shaft rotor disc also tilts sideways high retreating blade side due interaction between ward speed coning angle blades rotor force tilted side ways tending roll autogiro away retreating blade side rotor autogiro turns clockwise seen above side tilt rotor disc tries roll giro left can counteracted devon trim found satisfactory tilt top rotor shaft about three degrees retreating blade side right side Before building autogiro searched through large collection model maga zines found little useful information However did find book Aero dynamics Helicopter Gessow Myers Frederick Ungar Publishing Co NY very helpful understanding rotor blade motion [When writing advertisers mention read about Model Aviation CL ScalelGretz continued page 44 metering jet through spray orifices metered charge mixed air resulting combustible mix ture fuel air under pressure opens valve passes com bustion chamber fired spark plug receives its initial electric impulse external spark coil pressure resulting combustion closes valve sets up pressure wave tail pipe engine Once initial charge has inducted fired above opera tion automatic No further external forced air supply spark required pressure wave set up exhaust pipe firing initial charge cyclical nature first becomes negative pressure drawing another tered charge gasoline air through valve combustion chamber next becomes positive pressure closing valve firing new charge air hot gasses re maining previous combustion process repeated automatically rate 220-240 times per second long gasoline air supplied Well let Sam finish story unique brand CL Scale flying XF-92A weighs 6 lbs complete flies approximately 21 laps speed 85-90 mph built model 1974 using old set plans Air Trails magazine 1954 scale 1 inch foot has wingspan 31 inches 44 inches length Its built crutch using plywood formers bal sa planking Its finished Aero-Gloss white Air Force markings model lined internally layer asbestos paper two layers heavy-duty aluminum Reynolds Wrap foil using water-glass adhesive Around Dyna-Jet aluminum shroud 020 thick e between Dyna-Jet shroud approximately 1/2 between shroud insulation keep model catching fire Waterglass adhesive will burn As letter model has over 100 flights no problems need pit crew three people start jet holds model presses button spark coil operates air pump stay handle always airborne within two minutes ship lands open hatch pump air around Dyna-Jet cool down have building scale jets since 1954 1 flew XF-92A demo Aerolympics Scale WC 1974 Lakehurst New Jersey April 1978 1 flew model RC CL show Teterboro Airport Jay Gerber AMA HQ took film se quence jet hope will new all-scale film making needs information assistance 102 Model Aviation new CLASSIC kit prom FLYII LAKES Trainer 40 span 0925 power 4 channeLs nc $3495 complete catalog See dealer NOW No107 Fairchild 22 48 span 0915 power 3 channeLs nc $2995 FLYLINE MODELS INC 2020 DORR AVENUE B 2 FAIRFAX VIRGINIA 22031703 5732030 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT s Enterprises PLANES1356 Ervin Road BOATSPO Box 227 CARSPangles Center TRAINSVan Wert OH 45896 4 Joe Guylas 4191 238-2625 WE BUY OR TRADE OLD ENGINES AND KITS
Edition: Model Aviation - 1979/03
Page Numbers: 34, 35, 36, 37, 38, 102
that v have copters vhy shoL NO OCR TEXT IoO3 / 2 22 23 15 6 14 0 4 21 20 26 188 DIA 1~ 0 K 1325125 OIA 0 o 82 mr vi 37 DA i-JIo 50 DIA 02 KERF-42PLAT9O ~ir7 / Tr 1/\ 094 DIA625 DIA 3 PL [N II i 0 I50-2 SPIITEM jI REQD U K 3 I 000 350t~I ilL 096 O1A 189 DIA ITEM 4 475O - DIA UIn II ON 125 PL 3 REQD 632 THO 25 OP DIA DIA /067D1A7 4 0 ITEM 61 R0DITEM 71 REQO 189 IA 375 140Ifl 4 094 DIA ITEM 2 3 REQD 295 1500 no THD hA Ll -r DIA -1I 00 0 s 0 0 O~O 0 0g0 0.00 WB 0 S 0 0 0 0 0 0 I. 0 ~oEC 0 4-Q 4- 00 0 ITEI OR LFT N TING BJ compot componi componei blade attack bi attach e wind velocity ef ROTOR DISC ES FLAPPING DISC BACKWARJ 50 inches pIacement ottle n model helicopi g see-saw bi rotor ing blace m retr blade would tnat its vertical rely reduces its s lift Notice angle t airspeed ROTOR Sc NOT BLADE slogans taught us Dental School Dee B Mathews 506 S Walnut Greensburg KS 67054 Taming Autogiro/Kuhnle continued page 38 located slightly forward rotor force resulting nose-down pitching moment counterbalanced setting stabilizer pushed tail down same force arrangement used fixed wing planes except rotor force replaces combined lift-drag force wing good wing has relatively little drag lift-drag resultant almost vertical CG appears almost directly below wings center lift churning rotor blades create large amounts drag rotor force inclined relatively large angle respect vertical addition rotor usually located much higher above CG wing Because two factors though CG located slightly forward rotor force CG will located relatively large distance front rotors center giv ing erroneous impression center lift forward rotors cen ter proper location CG autogiro determined flight testing about three inches forward center rotor held loosely rotor hub fuselage hangs nose down angle about 20 degrees horizontal rotor disc tips back about 18 degrees thus confirming CG should lie slightly forward line drawn through center rotor perpen dicular plane blade tips rotate autogiros forward speed causes rotor disc tilt backward respect rotor shaft rotor disc also tilts sideways high retreating blade side due interaction between ward speed coning angle blades rotor force tilted side ways tending roll autogiro away retreating blade side rotor autogiro turns clockwise seen above side tilt rotor disc tries roll giro left can counteracted devon trim found satisfactory tilt top rotor shaft about three degrees retreating blade side right side Before building autogiro searched through large collection model maga zines found little useful information However did find book Aero dynamics Helicopter Gessow Myers Frederick Ungar Publishing Co NY very helpful understanding rotor blade motion [When writing advertisers mention read about Model Aviation CL ScalelGretz continued page 44 metering jet through spray orifices metered charge mixed air resulting combustible mix ture fuel air under pressure opens valve passes com bustion chamber fired spark plug receives its initial electric impulse external spark coil pressure resulting combustion closes valve sets up pressure wave tail pipe engine Once initial charge has inducted fired above opera tion automatic No further external forced air supply spark required pressure wave set up exhaust pipe firing initial charge cyclical nature first becomes negative pressure drawing another tered charge gasoline air through valve combustion chamber next becomes positive pressure closing valve firing new charge air hot gasses re maining previous combustion process repeated automatically rate 220-240 times per second long gasoline air supplied Well let Sam finish story unique brand CL Scale flying XF-92A weighs 6 lbs complete flies approximately 21 laps speed 85-90 mph built model 1974 using old set plans Air Trails magazine 1954 scale 1 inch foot has wingspan 31 inches 44 inches length Its built crutch using plywood formers bal sa planking Its finished Aero-Gloss white Air Force markings model lined internally layer asbestos paper two layers heavy-duty aluminum Reynolds Wrap foil using water-glass adhesive Around Dyna-Jet aluminum shroud 020 thick e between Dyna-Jet shroud approximately 1/2 between shroud insulation keep model catching fire Waterglass adhesive will burn As letter model has over 100 flights no problems need pit crew three people start jet holds model presses button spark coil operates air pump stay handle always airborne within two minutes ship lands open hatch pump air around Dyna-Jet cool down have building scale jets since 1954 1 flew XF-92A demo Aerolympics Scale WC 1974 Lakehurst New Jersey April 1978 1 flew model RC CL show Teterboro Airport Jay Gerber AMA HQ took film se quence jet hope will new all-scale film making needs information assistance 102 Model Aviation new CLASSIC kit prom FLYII LAKES Trainer 40 span 0925 power 4 channeLs nc $3495 complete catalog See dealer NOW No107 Fairchild 22 48 span 0915 power 3 channeLs nc $2995 FLYLINE MODELS INC 2020 DORR AVENUE B 2 FAIRFAX VIRGINIA 22031703 5732030 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT s Enterprises PLANES1356 Ervin Road BOATSPO Box 227 CARSPangles Center TRAINSVan Wert OH 45896 4 Joe Guylas 4191 238-2625 WE BUY OR TRADE OLD ENGINES AND KITS
Edition: Model Aviation - 1979/03
Page Numbers: 34, 35, 36, 37, 38, 102
that v have copters vhy shoL NO OCR TEXT IoO3 / 2 22 23 15 6 14 0 4 21 20 26 188 DIA 1~ 0 K 1325125 OIA 0 o 82 mr vi 37 DA i-JIo 50 DIA 02 KERF-42PLAT9O ~ir7 / Tr 1/\ 094 DIA625 DIA 3 PL [N II i 0 I50-2 SPIITEM jI REQD U K 3 I 000 350t~I ilL 096 O1A 189 DIA ITEM 4 475O - DIA UIn II ON 125 PL 3 REQD 632 THO 25 OP DIA DIA /067D1A7 4 0 ITEM 61 R0DITEM 71 REQO 189 IA 375 140Ifl 4 094 DIA ITEM 2 3 REQD 295 1500 no THD hA Ll -r DIA -1I 00 0 s 0 0 O~O 0 0g0 0.00 WB 0 S 0 0 0 0 0 0 I. 0 ~oEC 0 4-Q 4- 00 0 ITEI OR LFT N TING BJ compot componi componei blade attack bi attach e wind velocity ef ROTOR DISC ES FLAPPING DISC BACKWARJ 50 inches pIacement ottle n model helicopi g see-saw bi rotor ing blace m retr blade would tnat its vertical rely reduces its s lift Notice angle t airspeed ROTOR Sc NOT BLADE slogans taught us Dental School Dee B Mathews 506 S Walnut Greensburg KS 67054 Taming Autogiro/Kuhnle continued page 38 located slightly forward rotor force resulting nose-down pitching moment counterbalanced setting stabilizer pushed tail down same force arrangement used fixed wing planes except rotor force replaces combined lift-drag force wing good wing has relatively little drag lift-drag resultant almost vertical CG appears almost directly below wings center lift churning rotor blades create large amounts drag rotor force inclined relatively large angle respect vertical addition rotor usually located much higher above CG wing Because two factors though CG located slightly forward rotor force CG will located relatively large distance front rotors center giv ing erroneous impression center lift forward rotors cen ter proper location CG autogiro determined flight testing about three inches forward center rotor held loosely rotor hub fuselage hangs nose down angle about 20 degrees horizontal rotor disc tips back about 18 degrees thus confirming CG should lie slightly forward line drawn through center rotor perpen dicular plane blade tips rotate autogiros forward speed causes rotor disc tilt backward respect rotor shaft rotor disc also tilts sideways high retreating blade side due interaction between ward speed coning angle blades rotor force tilted side ways tending roll autogiro away retreating blade side rotor autogiro turns clockwise seen above side tilt rotor disc tries roll giro left can counteracted devon trim found satisfactory tilt top rotor shaft about three degrees retreating blade side right side Before building autogiro searched through large collection model maga zines found little useful information However did find book Aero dynamics Helicopter Gessow Myers Frederick Ungar Publishing Co NY very helpful understanding rotor blade motion [When writing advertisers mention read about Model Aviation CL ScalelGretz continued page 44 metering jet through spray orifices metered charge mixed air resulting combustible mix ture fuel air under pressure opens valve passes com bustion chamber fired spark plug receives its initial electric impulse external spark coil pressure resulting combustion closes valve sets up pressure wave tail pipe engine Once initial charge has inducted fired above opera tion automatic No further external forced air supply spark required pressure wave set up exhaust pipe firing initial charge cyclical nature first becomes negative pressure drawing another tered charge gasoline air through valve combustion chamber next becomes positive pressure closing valve firing new charge air hot gasses re maining previous combustion process repeated automatically rate 220-240 times per second long gasoline air supplied Well let Sam finish story unique brand CL Scale flying XF-92A weighs 6 lbs complete flies approximately 21 laps speed 85-90 mph built model 1974 using old set plans Air Trails magazine 1954 scale 1 inch foot has wingspan 31 inches 44 inches length Its built crutch using plywood formers bal sa planking Its finished Aero-Gloss white Air Force markings model lined internally layer asbestos paper two layers heavy-duty aluminum Reynolds Wrap foil using water-glass adhesive Around Dyna-Jet aluminum shroud 020 thick e between Dyna-Jet shroud approximately 1/2 between shroud insulation keep model catching fire Waterglass adhesive will burn As letter model has over 100 flights no problems need pit crew three people start jet holds model presses button spark coil operates air pump stay handle always airborne within two minutes ship lands open hatch pump air around Dyna-Jet cool down have building scale jets since 1954 1 flew XF-92A demo Aerolympics Scale WC 1974 Lakehurst New Jersey April 1978 1 flew model RC CL show Teterboro Airport Jay Gerber AMA HQ took film se quence jet hope will new all-scale film making needs information assistance 102 Model Aviation new CLASSIC kit prom FLYII LAKES Trainer 40 span 0925 power 4 channeLs nc $3495 complete catalog See dealer NOW No107 Fairchild 22 48 span 0915 power 3 channeLs nc $2995 FLYLINE MODELS INC 2020 DORR AVENUE B 2 FAIRFAX VIRGINIA 22031703 5732030 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT s Enterprises PLANES1356 Ervin Road BOATSPO Box 227 CARSPangles Center TRAINSVan Wert OH 45896 4 Joe Guylas 4191 238-2625 WE BUY OR TRADE OLD ENGINES AND KITS
Edition: Model Aviation - 1979/03
Page Numbers: 34, 35, 36, 37, 38, 102
that v have copters vhy shoL NO OCR TEXT IoO3 / 2 22 23 15 6 14 0 4 21 20 26 188 DIA 1~ 0 K 1325125 OIA 0 o 82 mr vi 37 DA i-JIo 50 DIA 02 KERF-42PLAT9O ~ir7 / Tr 1/\ 094 DIA625 DIA 3 PL [N II i 0 I50-2 SPIITEM jI REQD U K 3 I 000 350t~I ilL 096 O1A 189 DIA ITEM 4 475O - DIA UIn II ON 125 PL 3 REQD 632 THO 25 OP DIA DIA /067D1A7 4 0 ITEM 61 R0DITEM 71 REQO 189 IA 375 140Ifl 4 094 DIA ITEM 2 3 REQD 295 1500 no THD hA Ll -r DIA -1I 00 0 s 0 0 O~O 0 0g0 0.00 WB 0 S 0 0 0 0 0 0 I. 0 ~oEC 0 4-Q 4- 00 0 ITEI OR LFT N TING BJ compot componi componei blade attack bi attach e wind velocity ef ROTOR DISC ES FLAPPING DISC BACKWARJ 50 inches pIacement ottle n model helicopi g see-saw bi rotor ing blace m retr blade would tnat its vertical rely reduces its s lift Notice angle t airspeed ROTOR Sc NOT BLADE slogans taught us Dental School Dee B Mathews 506 S Walnut Greensburg KS 67054 Taming Autogiro/Kuhnle continued page 38 located slightly forward rotor force resulting nose-down pitching moment counterbalanced setting stabilizer pushed tail down same force arrangement used fixed wing planes except rotor force replaces combined lift-drag force wing good wing has relatively little drag lift-drag resultant almost vertical CG appears almost directly below wings center lift churning rotor blades create large amounts drag rotor force inclined relatively large angle respect vertical addition rotor usually located much higher above CG wing Because two factors though CG located slightly forward rotor force CG will located relatively large distance front rotors center giv ing erroneous impression center lift forward rotors cen ter proper location CG autogiro determined flight testing about three inches forward center rotor held loosely rotor hub fuselage hangs nose down angle about 20 degrees horizontal rotor disc tips back about 18 degrees thus confirming CG should lie slightly forward line drawn through center rotor perpen dicular plane blade tips rotate autogiros forward speed causes rotor disc tilt backward respect rotor shaft rotor disc also tilts sideways high retreating blade side due interaction between ward speed coning angle blades rotor force tilted side ways tending roll autogiro away retreating blade side rotor autogiro turns clockwise seen above side tilt rotor disc tries roll giro left can counteracted devon trim found satisfactory tilt top rotor shaft about three degrees retreating blade side right side Before building autogiro searched through large collection model maga zines found little useful information However did find book Aero dynamics Helicopter Gessow Myers Frederick Ungar Publishing Co NY very helpful understanding rotor blade motion [When writing advertisers mention read about Model Aviation CL ScalelGretz continued page 44 metering jet through spray orifices metered charge mixed air resulting combustible mix ture fuel air under pressure opens valve passes com bustion chamber fired spark plug receives its initial electric impulse external spark coil pressure resulting combustion closes valve sets up pressure wave tail pipe engine Once initial charge has inducted fired above opera tion automatic No further external forced air supply spark required pressure wave set up exhaust pipe firing initial charge cyclical nature first becomes negative pressure drawing another tered charge gasoline air through valve combustion chamber next becomes positive pressure closing valve firing new charge air hot gasses re maining previous combustion process repeated automatically rate 220-240 times per second long gasoline air supplied Well let Sam finish story unique brand CL Scale flying XF-92A weighs 6 lbs complete flies approximately 21 laps speed 85-90 mph built model 1974 using old set plans Air Trails magazine 1954 scale 1 inch foot has wingspan 31 inches 44 inches length Its built crutch using plywood formers bal sa planking Its finished Aero-Gloss white Air Force markings model lined internally layer asbestos paper two layers heavy-duty aluminum Reynolds Wrap foil using water-glass adhesive Around Dyna-Jet aluminum shroud 020 thick e between Dyna-Jet shroud approximately 1/2 between shroud insulation keep model catching fire Waterglass adhesive will burn As letter model has over 100 flights no problems need pit crew three people start jet holds model presses button spark coil operates air pump stay handle always airborne within two minutes ship lands open hatch pump air around Dyna-Jet cool down have building scale jets since 1954 1 flew XF-92A demo Aerolympics Scale WC 1974 Lakehurst New Jersey April 1978 1 flew model RC CL show Teterboro Airport Jay Gerber AMA HQ took film se quence jet hope will new all-scale film making needs information assistance 102 Model Aviation new CLASSIC kit prom FLYII LAKES Trainer 40 span 0925 power 4 channeLs nc $3495 complete catalog See dealer NOW No107 Fairchild 22 48 span 0915 power 3 channeLs nc $2995 FLYLINE MODELS INC 2020 DORR AVENUE B 2 FAIRFAX VIRGINIA 22031703 5732030 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT s Enterprises PLANES1356 Ervin Road BOATSPO Box 227 CARSPangles Center TRAINSVan Wert OH 45896 4 Joe Guylas 4191 238-2625 WE BUY OR TRADE OLD ENGINES AND KITS
Edition: Model Aviation - 1979/03
Page Numbers: 34, 35, 36, 37, 38, 102
that v have copters vhy shoL NO OCR TEXT IoO3 / 2 22 23 15 6 14 0 4 21 20 26 188 DIA 1~ 0 K 1325125 OIA 0 o 82 mr vi 37 DA i-JIo 50 DIA 02 KERF-42PLAT9O ~ir7 / Tr 1/\ 094 DIA625 DIA 3 PL [N II i 0 I50-2 SPIITEM jI REQD U K 3 I 000 350t~I ilL 096 O1A 189 DIA ITEM 4 475O - DIA UIn II ON 125 PL 3 REQD 632 THO 25 OP DIA DIA /067D1A7 4 0 ITEM 61 R0DITEM 71 REQO 189 IA 375 140Ifl 4 094 DIA ITEM 2 3 REQD 295 1500 no THD hA Ll -r DIA -1I 00 0 s 0 0 O~O 0 0g0 0.00 WB 0 S 0 0 0 0 0 0 I. 0 ~oEC 0 4-Q 4- 00 0 ITEI OR LFT N TING BJ compot componi componei blade attack bi attach e wind velocity ef ROTOR DISC ES FLAPPING DISC BACKWARJ 50 inches pIacement ottle n model helicopi g see-saw bi rotor ing blace m retr blade would tnat its vertical rely reduces its s lift Notice angle t airspeed ROTOR Sc NOT BLADE slogans taught us Dental School Dee B Mathews 506 S Walnut Greensburg KS 67054 Taming Autogiro/Kuhnle continued page 38 located slightly forward rotor force resulting nose-down pitching moment counterbalanced setting stabilizer pushed tail down same force arrangement used fixed wing planes except rotor force replaces combined lift-drag force wing good wing has relatively little drag lift-drag resultant almost vertical CG appears almost directly below wings center lift churning rotor blades create large amounts drag rotor force inclined relatively large angle respect vertical addition rotor usually located much higher above CG wing Because two factors though CG located slightly forward rotor force CG will located relatively large distance front rotors center giv ing erroneous impression center lift forward rotors cen ter proper location CG autogiro determined flight testing about three inches forward center rotor held loosely rotor hub fuselage hangs nose down angle about 20 degrees horizontal rotor disc tips back about 18 degrees thus confirming CG should lie slightly forward line drawn through center rotor perpen dicular plane blade tips rotate autogiros forward speed causes rotor disc tilt backward respect rotor shaft rotor disc also tilts sideways high retreating blade side due interaction between ward speed coning angle blades rotor force tilted side ways tending roll autogiro away retreating blade side rotor autogiro turns clockwise seen above side tilt rotor disc tries roll giro left can counteracted devon trim found satisfactory tilt top rotor shaft about three degrees retreating blade side right side Before building autogiro searched through large collection model maga zines found little useful information However did find book Aero dynamics Helicopter Gessow Myers Frederick Ungar Publishing Co NY very helpful understanding rotor blade motion [When writing advertisers mention read about Model Aviation CL ScalelGretz continued page 44 metering jet through spray orifices metered charge mixed air resulting combustible mix ture fuel air under pressure opens valve passes com bustion chamber fired spark plug receives its initial electric impulse external spark coil pressure resulting combustion closes valve sets up pressure wave tail pipe engine Once initial charge has inducted fired above opera tion automatic No further external forced air supply spark required pressure wave set up exhaust pipe firing initial charge cyclical nature first becomes negative pressure drawing another tered charge gasoline air through valve combustion chamber next becomes positive pressure closing valve firing new charge air hot gasses re maining previous combustion process repeated automatically rate 220-240 times per second long gasoline air supplied Well let Sam finish story unique brand CL Scale flying XF-92A weighs 6 lbs complete flies approximately 21 laps speed 85-90 mph built model 1974 using old set plans Air Trails magazine 1954 scale 1 inch foot has wingspan 31 inches 44 inches length Its built crutch using plywood formers bal sa planking Its finished Aero-Gloss white Air Force markings model lined internally layer asbestos paper two layers heavy-duty aluminum Reynolds Wrap foil using water-glass adhesive Around Dyna-Jet aluminum shroud 020 thick e between Dyna-Jet shroud approximately 1/2 between shroud insulation keep model catching fire Waterglass adhesive will burn As letter model has over 100 flights no problems need pit crew three people start jet holds model presses button spark coil operates air pump stay handle always airborne within two minutes ship lands open hatch pump air around Dyna-Jet cool down have building scale jets since 1954 1 flew XF-92A demo Aerolympics Scale WC 1974 Lakehurst New Jersey April 1978 1 flew model RC CL show Teterboro Airport Jay Gerber AMA HQ took film se quence jet hope will new all-scale film making needs information assistance 102 Model Aviation new CLASSIC kit prom FLYII LAKES Trainer 40 span 0925 power 4 channeLs nc $3495 complete catalog See dealer NOW No107 Fairchild 22 48 span 0915 power 3 channeLs nc $2995 FLYLINE MODELS INC 2020 DORR AVENUE B 2 FAIRFAX VIRGINIA 22031703 5732030 OUR AIM IS TO KEEP SPORT FLYING SPECIALIZING IN OT FF KITS AND ENGINES FOR THE COMPETITOR WE HAVE THE HOT EQUIPMENT s Enterprises PLANES1356 Ervin Road BOATSPO Box 227 CARSPangles Center TRAINSVan Wert OH 45896 4 Joe Guylas 4191 238-2625 WE BUY OR TRADE OLD ENGINES AND KITS