Typical scene IMS indoor RC meet combined modeleroriented trade show provided unique atmosphere Models flew over exhibitors booths around tissue paper streamer pylons hung ceiling Flights frequently long end always slow people appear blase Strange things happening International Modeler Show.. U Bill Evans GHOUIIBS TI ES HISTORY made second annual International Modeler Show held Pasadena Center Pasadena CA January 6th 7th 1979 played host first Indoor RC contest different types models flown electric power some C02 rubber power blimps winged aircraft entry combination both four categories compe tition Electric C02 Rubber Light er Air electric Duration judged first three distance fourth category aircraft required have wing loading less 4 oz sq ft fliers required demon strate flying proficiency January 4th qualify flying show 6th 7th photos show majority air craft flown first contest its kind Practically entries flew success fully indicates design approaches possible Furthermore used off-the-shelf stock items motors batteries etc means success can duplicated other modelers Therefore stage set whole new area model flying open up May1979 65 Tony Naccaratos original Sad Sack rubber-powered entry 50-in span 500 sq area Very successful al though rather short motor run Left Very successful original Hytork design Hal Cover flew over 20 minutes Small electric motor geared 23-to-i drove big prop Span 7 ft 8 sq ft area weight 17 oz Cannon radio rudder elevator Closeup right shows removable pod containing RC gear V L electric motor drive batteries hand-carved prop Large light structure combined indoor outdoor free-flight techniques IMS contest proved Indoor RC now practical masses gym other large indoor site can pro vide local site RC activity means RC need shut down due bad weather Yet during good outdoor weather Indoor RC activi ty can hold its ownit has its own kicks satisfaction An interesting realization came out contestthat much less power needed fly indoors Without gusts steady winds contend maintain ing airspeed much problem An electric motor can much smaller would used outdoors means battery size weight problem reduced 66 Model Aviation Airtoll-eflaped craft filled helium reduce effective weight minimize power needed flight Radio used control pivoted electric motor nose could vary thrust vector up down right left Transparent Mylar covering Right Aerostat type imd two tapedtogether helium4illed halves RC pod attached nose using large gear-driven prop thrust steering model very bigand vary light extraordinary project successful achievement modelers John Pond Jim Gerard Bill Cannon lert ana wmtn wITe Charlie rigfltthoroughly enjoyed activitieshis subminiature radios ware used practically entrants original design spanned 58 weighed 11 o used V L electric motor Peck propeller very neat aircraft other hand Indoor RC favors skilled builders Modelers strong Free Flight background did very well IMS affair knew secrets strong light construction weight savings came lower air speeds less power requirements gentle flying characteristics Free Flight experience also tended strong original design IMS contest originality prevailed suitable kits scarce Another interesting point indoor sites unsuitable Free Flight Gliders Rubber Powered models okay RC truss-type ceiling net work example no problem IMSthe pilots simply kept models below beams Also flying figure eight course proved precise control can contend pillars poles avoiding surprise observers large size models relatively easy way cope hauling weight radio batteries motors lots wing area minimize wing loading together relatively slow speed models enabled turn tightly confined areas An obvious impression noted Indoor Pylon Racing seems fea sible Still another revelation well lighter-than-air craft performed Two actually did race other around course awhile delicate might supposed capable far weight lifting people realizedcarrying sub stantial ballast typical gold football example carried plastic jug dribbled drops water radio command compensate heli um loss during several hours flying IMS event successful spectacular can expect see much such flying around country very shortly after basic how-to-do-it information gets around Host Bill Northrop IMS col May1979 67 Phil Bernhardts original canard 8-ft span Tony Avak flew original Little Blimp 6 ft Mitch Polings Astro Dandy weighed 20Y2 oZ weighed 20 wing loading 37 ozI long 20-in diameterwhen inflated Gross 67 sq ft wing area Used Astro 020 elec sq ft Used Astro 02 motor geared 540-1 8% Rudder elevator Photo shows f ii- tric motor Cannon radio drive 18-in hand-carved prop Two-channel ling hook-up helium tank Ace Royal combination operated eleva tor tip rudders deflected outwards Above Four CO2 motors rack above wing did excellent job powering fine flying de sign Bill Watson Slow graceful flew times won CO2 event Watson also won lighter-than-air avant Gold Football Left Wing structure Watsons model admired Bigness lightness obviously desirable Interchangeable electric-drive package same model shown sailplane April pg 33 before revision indoor Bob Pecks original used two balloons carry helium Fuselage truss frame connected balloons carried motor radio motor steered up down sideways switched on-off during flight Lots liftrequired ballast leagues have opened up new world us enjoy Prior IMS con test Indoor RC super-specialty area tried very few Now however manner can its something lot people have done predict will same same place same time its fun Lets Talk About Float DesignA Correction Brad Powers article page 14 April issue drawing top page en titled Conventional Float have replaced similar drawing bigger floatthe seen before magazine went press old negative rather new inadvertently stripped original drawing technically incorrect Brad decided quarter-scale Nosen Citabria wished increase gross weight airplane allow carrying payload case camera difference between drawings new float being larger has greater buoyancy course data given incorrect drawing did jibe corrected text incorrect drawing matches anticipated gross weight project remains useful Model Aviation regrets inconvenience reader 68 Model Aviation VK s uump OT its successtul Tlights Largedetlection control surfacesabout 45 degrees side neutral necessary due low airspeed Right Saggy envelope bag helium did appear detract flight performancemany flights excellent control Left Probably successful model meet Watsons original nicknamed Gold Football due color helium cell Foreend-eft horizontal controls pitch altitude Speed range hover brisk walking pace Right Electric motor prop mounted front steerable rudder worked well yaw control Tube 5 batteries projected nose provide simple power Like some airborne Captain Nemos submarine impressive model flew over 100 laps around Figure-a course Executive Director says counted em ____0 lAijSOO 1252 Lt/ FLOAT 220 iA2CiV12S2 * CURVE OF AREAS I-2001 1 2LX- SIS ________02 2CAA 71 O 1204 SSTSSIA PA AI2ABIIBHAO211TIBjATATOREBOAT CONVENTIONAL FLOAT FIG 5
Edition: Model Aviation - 1979/05
Page Numbers: 65, 66, 67, 68
Typical scene IMS indoor RC meet combined modeleroriented trade show provided unique atmosphere Models flew over exhibitors booths around tissue paper streamer pylons hung ceiling Flights frequently long end always slow people appear blase Strange things happening International Modeler Show.. U Bill Evans GHOUIIBS TI ES HISTORY made second annual International Modeler Show held Pasadena Center Pasadena CA January 6th 7th 1979 played host first Indoor RC contest different types models flown electric power some C02 rubber power blimps winged aircraft entry combination both four categories compe tition Electric C02 Rubber Light er Air electric Duration judged first three distance fourth category aircraft required have wing loading less 4 oz sq ft fliers required demon strate flying proficiency January 4th qualify flying show 6th 7th photos show majority air craft flown first contest its kind Practically entries flew success fully indicates design approaches possible Furthermore used off-the-shelf stock items motors batteries etc means success can duplicated other modelers Therefore stage set whole new area model flying open up May1979 65 Tony Naccaratos original Sad Sack rubber-powered entry 50-in span 500 sq area Very successful al though rather short motor run Left Very successful original Hytork design Hal Cover flew over 20 minutes Small electric motor geared 23-to-i drove big prop Span 7 ft 8 sq ft area weight 17 oz Cannon radio rudder elevator Closeup right shows removable pod containing RC gear V L electric motor drive batteries hand-carved prop Large light structure combined indoor outdoor free-flight techniques IMS contest proved Indoor RC now practical masses gym other large indoor site can pro vide local site RC activity means RC need shut down due bad weather Yet during good outdoor weather Indoor RC activi ty can hold its ownit has its own kicks satisfaction An interesting realization came out contestthat much less power needed fly indoors Without gusts steady winds contend maintain ing airspeed much problem An electric motor can much smaller would used outdoors means battery size weight problem reduced 66 Model Aviation Airtoll-eflaped craft filled helium reduce effective weight minimize power needed flight Radio used control pivoted electric motor nose could vary thrust vector up down right left Transparent Mylar covering Right Aerostat type imd two tapedtogether helium4illed halves RC pod attached nose using large gear-driven prop thrust steering model very bigand vary light extraordinary project successful achievement modelers John Pond Jim Gerard Bill Cannon lert ana wmtn wITe Charlie rigfltthoroughly enjoyed activitieshis subminiature radios ware used practically entrants original design spanned 58 weighed 11 o used V L electric motor Peck propeller very neat aircraft other hand Indoor RC favors skilled builders Modelers strong Free Flight background did very well IMS affair knew secrets strong light construction weight savings came lower air speeds less power requirements gentle flying characteristics Free Flight experience also tended strong original design IMS contest originality prevailed suitable kits scarce Another interesting point indoor sites unsuitable Free Flight Gliders Rubber Powered models okay RC truss-type ceiling net work example no problem IMSthe pilots simply kept models below beams Also flying figure eight course proved precise control can contend pillars poles avoiding surprise observers large size models relatively easy way cope hauling weight radio batteries motors lots wing area minimize wing loading together relatively slow speed models enabled turn tightly confined areas An obvious impression noted Indoor Pylon Racing seems fea sible Still another revelation well lighter-than-air craft performed Two actually did race other around course awhile delicate might supposed capable far weight lifting people realizedcarrying sub stantial ballast typical gold football example carried plastic jug dribbled drops water radio command compensate heli um loss during several hours flying IMS event successful spectacular can expect see much such flying around country very shortly after basic how-to-do-it information gets around Host Bill Northrop IMS col May1979 67 Phil Bernhardts original canard 8-ft span Tony Avak flew original Little Blimp 6 ft Mitch Polings Astro Dandy weighed 20Y2 oZ weighed 20 wing loading 37 ozI long 20-in diameterwhen inflated Gross 67 sq ft wing area Used Astro 020 elec sq ft Used Astro 02 motor geared 540-1 8% Rudder elevator Photo shows f ii- tric motor Cannon radio drive 18-in hand-carved prop Two-channel ling hook-up helium tank Ace Royal combination operated eleva tor tip rudders deflected outwards Above Four CO2 motors rack above wing did excellent job powering fine flying de sign Bill Watson Slow graceful flew times won CO2 event Watson also won lighter-than-air avant Gold Football Left Wing structure Watsons model admired Bigness lightness obviously desirable Interchangeable electric-drive package same model shown sailplane April pg 33 before revision indoor Bob Pecks original used two balloons carry helium Fuselage truss frame connected balloons carried motor radio motor steered up down sideways switched on-off during flight Lots liftrequired ballast leagues have opened up new world us enjoy Prior IMS con test Indoor RC super-specialty area tried very few Now however manner can its something lot people have done predict will same same place same time its fun Lets Talk About Float DesignA Correction Brad Powers article page 14 April issue drawing top page en titled Conventional Float have replaced similar drawing bigger floatthe seen before magazine went press old negative rather new inadvertently stripped original drawing technically incorrect Brad decided quarter-scale Nosen Citabria wished increase gross weight airplane allow carrying payload case camera difference between drawings new float being larger has greater buoyancy course data given incorrect drawing did jibe corrected text incorrect drawing matches anticipated gross weight project remains useful Model Aviation regrets inconvenience reader 68 Model Aviation VK s uump OT its successtul Tlights Largedetlection control surfacesabout 45 degrees side neutral necessary due low airspeed Right Saggy envelope bag helium did appear detract flight performancemany flights excellent control Left Probably successful model meet Watsons original nicknamed Gold Football due color helium cell Foreend-eft horizontal controls pitch altitude Speed range hover brisk walking pace Right Electric motor prop mounted front steerable rudder worked well yaw control Tube 5 batteries projected nose provide simple power Like some airborne Captain Nemos submarine impressive model flew over 100 laps around Figure-a course Executive Director says counted em ____0 lAijSOO 1252 Lt/ FLOAT 220 iA2CiV12S2 * CURVE OF AREAS I-2001 1 2LX- SIS ________02 2CAA 71 O 1204 SSTSSIA PA AI2ABIIBHAO211TIBjATATOREBOAT CONVENTIONAL FLOAT FIG 5
Edition: Model Aviation - 1979/05
Page Numbers: 65, 66, 67, 68
Typical scene IMS indoor RC meet combined modeleroriented trade show provided unique atmosphere Models flew over exhibitors booths around tissue paper streamer pylons hung ceiling Flights frequently long end always slow people appear blase Strange things happening International Modeler Show.. U Bill Evans GHOUIIBS TI ES HISTORY made second annual International Modeler Show held Pasadena Center Pasadena CA January 6th 7th 1979 played host first Indoor RC contest different types models flown electric power some C02 rubber power blimps winged aircraft entry combination both four categories compe tition Electric C02 Rubber Light er Air electric Duration judged first three distance fourth category aircraft required have wing loading less 4 oz sq ft fliers required demon strate flying proficiency January 4th qualify flying show 6th 7th photos show majority air craft flown first contest its kind Practically entries flew success fully indicates design approaches possible Furthermore used off-the-shelf stock items motors batteries etc means success can duplicated other modelers Therefore stage set whole new area model flying open up May1979 65 Tony Naccaratos original Sad Sack rubber-powered entry 50-in span 500 sq area Very successful al though rather short motor run Left Very successful original Hytork design Hal Cover flew over 20 minutes Small electric motor geared 23-to-i drove big prop Span 7 ft 8 sq ft area weight 17 oz Cannon radio rudder elevator Closeup right shows removable pod containing RC gear V L electric motor drive batteries hand-carved prop Large light structure combined indoor outdoor free-flight techniques IMS contest proved Indoor RC now practical masses gym other large indoor site can pro vide local site RC activity means RC need shut down due bad weather Yet during good outdoor weather Indoor RC activi ty can hold its ownit has its own kicks satisfaction An interesting realization came out contestthat much less power needed fly indoors Without gusts steady winds contend maintain ing airspeed much problem An electric motor can much smaller would used outdoors means battery size weight problem reduced 66 Model Aviation Airtoll-eflaped craft filled helium reduce effective weight minimize power needed flight Radio used control pivoted electric motor nose could vary thrust vector up down right left Transparent Mylar covering Right Aerostat type imd two tapedtogether helium4illed halves RC pod attached nose using large gear-driven prop thrust steering model very bigand vary light extraordinary project successful achievement modelers John Pond Jim Gerard Bill Cannon lert ana wmtn wITe Charlie rigfltthoroughly enjoyed activitieshis subminiature radios ware used practically entrants original design spanned 58 weighed 11 o used V L electric motor Peck propeller very neat aircraft other hand Indoor RC favors skilled builders Modelers strong Free Flight background did very well IMS affair knew secrets strong light construction weight savings came lower air speeds less power requirements gentle flying characteristics Free Flight experience also tended strong original design IMS contest originality prevailed suitable kits scarce Another interesting point indoor sites unsuitable Free Flight Gliders Rubber Powered models okay RC truss-type ceiling net work example no problem IMSthe pilots simply kept models below beams Also flying figure eight course proved precise control can contend pillars poles avoiding surprise observers large size models relatively easy way cope hauling weight radio batteries motors lots wing area minimize wing loading together relatively slow speed models enabled turn tightly confined areas An obvious impression noted Indoor Pylon Racing seems fea sible Still another revelation well lighter-than-air craft performed Two actually did race other around course awhile delicate might supposed capable far weight lifting people realizedcarrying sub stantial ballast typical gold football example carried plastic jug dribbled drops water radio command compensate heli um loss during several hours flying IMS event successful spectacular can expect see much such flying around country very shortly after basic how-to-do-it information gets around Host Bill Northrop IMS col May1979 67 Phil Bernhardts original canard 8-ft span Tony Avak flew original Little Blimp 6 ft Mitch Polings Astro Dandy weighed 20Y2 oZ weighed 20 wing loading 37 ozI long 20-in diameterwhen inflated Gross 67 sq ft wing area Used Astro 020 elec sq ft Used Astro 02 motor geared 540-1 8% Rudder elevator Photo shows f ii- tric motor Cannon radio drive 18-in hand-carved prop Two-channel ling hook-up helium tank Ace Royal combination operated eleva tor tip rudders deflected outwards Above Four CO2 motors rack above wing did excellent job powering fine flying de sign Bill Watson Slow graceful flew times won CO2 event Watson also won lighter-than-air avant Gold Football Left Wing structure Watsons model admired Bigness lightness obviously desirable Interchangeable electric-drive package same model shown sailplane April pg 33 before revision indoor Bob Pecks original used two balloons carry helium Fuselage truss frame connected balloons carried motor radio motor steered up down sideways switched on-off during flight Lots liftrequired ballast leagues have opened up new world us enjoy Prior IMS con test Indoor RC super-specialty area tried very few Now however manner can its something lot people have done predict will same same place same time its fun Lets Talk About Float DesignA Correction Brad Powers article page 14 April issue drawing top page en titled Conventional Float have replaced similar drawing bigger floatthe seen before magazine went press old negative rather new inadvertently stripped original drawing technically incorrect Brad decided quarter-scale Nosen Citabria wished increase gross weight airplane allow carrying payload case camera difference between drawings new float being larger has greater buoyancy course data given incorrect drawing did jibe corrected text incorrect drawing matches anticipated gross weight project remains useful Model Aviation regrets inconvenience reader 68 Model Aviation VK s uump OT its successtul Tlights Largedetlection control surfacesabout 45 degrees side neutral necessary due low airspeed Right Saggy envelope bag helium did appear detract flight performancemany flights excellent control Left Probably successful model meet Watsons original nicknamed Gold Football due color helium cell Foreend-eft horizontal controls pitch altitude Speed range hover brisk walking pace Right Electric motor prop mounted front steerable rudder worked well yaw control Tube 5 batteries projected nose provide simple power Like some airborne Captain Nemos submarine impressive model flew over 100 laps around Figure-a course Executive Director says counted em ____0 lAijSOO 1252 Lt/ FLOAT 220 iA2CiV12S2 * CURVE OF AREAS I-2001 1 2LX- SIS ________02 2CAA 71 O 1204 SSTSSIA PA AI2ABIIBHAO211TIBjATATOREBOAT CONVENTIONAL FLOAT FIG 5
Edition: Model Aviation - 1979/05
Page Numbers: 65, 66, 67, 68
Typical scene IMS indoor RC meet combined modeleroriented trade show provided unique atmosphere Models flew over exhibitors booths around tissue paper streamer pylons hung ceiling Flights frequently long end always slow people appear blase Strange things happening International Modeler Show.. U Bill Evans GHOUIIBS TI ES HISTORY made second annual International Modeler Show held Pasadena Center Pasadena CA January 6th 7th 1979 played host first Indoor RC contest different types models flown electric power some C02 rubber power blimps winged aircraft entry combination both four categories compe tition Electric C02 Rubber Light er Air electric Duration judged first three distance fourth category aircraft required have wing loading less 4 oz sq ft fliers required demon strate flying proficiency January 4th qualify flying show 6th 7th photos show majority air craft flown first contest its kind Practically entries flew success fully indicates design approaches possible Furthermore used off-the-shelf stock items motors batteries etc means success can duplicated other modelers Therefore stage set whole new area model flying open up May1979 65 Tony Naccaratos original Sad Sack rubber-powered entry 50-in span 500 sq area Very successful al though rather short motor run Left Very successful original Hytork design Hal Cover flew over 20 minutes Small electric motor geared 23-to-i drove big prop Span 7 ft 8 sq ft area weight 17 oz Cannon radio rudder elevator Closeup right shows removable pod containing RC gear V L electric motor drive batteries hand-carved prop Large light structure combined indoor outdoor free-flight techniques IMS contest proved Indoor RC now practical masses gym other large indoor site can pro vide local site RC activity means RC need shut down due bad weather Yet during good outdoor weather Indoor RC activi ty can hold its ownit has its own kicks satisfaction An interesting realization came out contestthat much less power needed fly indoors Without gusts steady winds contend maintain ing airspeed much problem An electric motor can much smaller would used outdoors means battery size weight problem reduced 66 Model Aviation Airtoll-eflaped craft filled helium reduce effective weight minimize power needed flight Radio used control pivoted electric motor nose could vary thrust vector up down right left Transparent Mylar covering Right Aerostat type imd two tapedtogether helium4illed halves RC pod attached nose using large gear-driven prop thrust steering model very bigand vary light extraordinary project successful achievement modelers John Pond Jim Gerard Bill Cannon lert ana wmtn wITe Charlie rigfltthoroughly enjoyed activitieshis subminiature radios ware used practically entrants original design spanned 58 weighed 11 o used V L electric motor Peck propeller very neat aircraft other hand Indoor RC favors skilled builders Modelers strong Free Flight background did very well IMS affair knew secrets strong light construction weight savings came lower air speeds less power requirements gentle flying characteristics Free Flight experience also tended strong original design IMS contest originality prevailed suitable kits scarce Another interesting point indoor sites unsuitable Free Flight Gliders Rubber Powered models okay RC truss-type ceiling net work example no problem IMSthe pilots simply kept models below beams Also flying figure eight course proved precise control can contend pillars poles avoiding surprise observers large size models relatively easy way cope hauling weight radio batteries motors lots wing area minimize wing loading together relatively slow speed models enabled turn tightly confined areas An obvious impression noted Indoor Pylon Racing seems fea sible Still another revelation well lighter-than-air craft performed Two actually did race other around course awhile delicate might supposed capable far weight lifting people realizedcarrying sub stantial ballast typical gold football example carried plastic jug dribbled drops water radio command compensate heli um loss during several hours flying IMS event successful spectacular can expect see much such flying around country very shortly after basic how-to-do-it information gets around Host Bill Northrop IMS col May1979 67 Phil Bernhardts original canard 8-ft span Tony Avak flew original Little Blimp 6 ft Mitch Polings Astro Dandy weighed 20Y2 oZ weighed 20 wing loading 37 ozI long 20-in diameterwhen inflated Gross 67 sq ft wing area Used Astro 020 elec sq ft Used Astro 02 motor geared 540-1 8% Rudder elevator Photo shows f ii- tric motor Cannon radio drive 18-in hand-carved prop Two-channel ling hook-up helium tank Ace Royal combination operated eleva tor tip rudders deflected outwards Above Four CO2 motors rack above wing did excellent job powering fine flying de sign Bill Watson Slow graceful flew times won CO2 event Watson also won lighter-than-air avant Gold Football Left Wing structure Watsons model admired Bigness lightness obviously desirable Interchangeable electric-drive package same model shown sailplane April pg 33 before revision indoor Bob Pecks original used two balloons carry helium Fuselage truss frame connected balloons carried motor radio motor steered up down sideways switched on-off during flight Lots liftrequired ballast leagues have opened up new world us enjoy Prior IMS con test Indoor RC super-specialty area tried very few Now however manner can its something lot people have done predict will same same place same time its fun Lets Talk About Float DesignA Correction Brad Powers article page 14 April issue drawing top page en titled Conventional Float have replaced similar drawing bigger floatthe seen before magazine went press old negative rather new inadvertently stripped original drawing technically incorrect Brad decided quarter-scale Nosen Citabria wished increase gross weight airplane allow carrying payload case camera difference between drawings new float being larger has greater buoyancy course data given incorrect drawing did jibe corrected text incorrect drawing matches anticipated gross weight project remains useful Model Aviation regrets inconvenience reader 68 Model Aviation VK s uump OT its successtul Tlights Largedetlection control surfacesabout 45 degrees side neutral necessary due low airspeed Right Saggy envelope bag helium did appear detract flight performancemany flights excellent control Left Probably successful model meet Watsons original nicknamed Gold Football due color helium cell Foreend-eft horizontal controls pitch altitude Speed range hover brisk walking pace Right Electric motor prop mounted front steerable rudder worked well yaw control Tube 5 batteries projected nose provide simple power Like some airborne Captain Nemos submarine impressive model flew over 100 laps around Figure-a course Executive Director says counted em ____0 lAijSOO 1252 Lt/ FLOAT 220 iA2CiV12S2 * CURVE OF AREAS I-2001 1 2LX- SIS ________02 2CAA 71 O 1204 SSTSSIA PA AI2ABIIBHAO211TIBjATATOREBOAT CONVENTIONAL FLOAT FIG 5