CONTROL LINE NAVY CARRIER Wing Loading Revisited reason current airplanes significantly larger ones flew 25 years ago slow speed important obtaining good score airplanes larger because lighter wing loading produces better low speed pointed out performance differences evident Nats last column Because slow speed has predominant role determining overall flight score majority models now built 44-inch wingspan limit Because wing loading determined dividing weight wing area basically two ways decrease wing loading can build model lighter can build model larger Building lighter has its limitations experience has shown best improvement performance comes building larger models Theoretically could start typical model quarter-century ago enlarge maximum wingspan allowed simply enlarging parts including wood thickness result would increase wing area proportional square linear dimension increase weight should increase cube dimensional increase Thus model like Short Seamew Model Aviation July 1975 started out 28 inches span 140 square inches wing area 30 ounces would grow 44 inches span 345 square inches wing area seven pounds Obviously weight formula incorrect because current models weigh considerably less seven pounds Nats Profile models averaged 43 ounces Class models full body averaged 48 ounces Class II 60 65 power averaged 55 ounces Although larger airplanes will heavier smaller ones parts Carrier models have fixed weight Engines fuel tanks control systems landing gear tail hooks etc basically same weight regardless size model part Another factor larger structures can built lighter equivalent strength Parts dont need increased thickness designs enlarged Covering paint thickness same always Weve also learned built-up fabric/film-covered wings quite adequate surviving low landing speeds todays models no longer believe have build Carrier models like Speed models Rat Racers Carrying theoretical thought processes performance would expect models full-scale aircraft Seamews speed decrease assume engine capable same power 1975 146% increase size top speed would drop 120 mph about 90 mph models arent full-scale airplanes Line drag significant part total drag line sizes have increased drag exposed engine same 25 years ago final factor high speed performance based actual top speed average speed standing start Actual top speeds models about 8% 10% higher high-speed score competition reality have seen about 10% 15% reduction high speed score because increased model size weight size increases however allow reduction wing loading nearly 40% other factors being equal newer models should capable least 20% better low speed compared Nostalgia-era brothers thoughts lead us would seem optimum model current competition would model built maximum wingspan built lightly possible As stated December issue good prototypes will produce model about 320-345 square inches wing area MO-l top end others will match Additional increases total performance assuming other factors equal require prototypes will provide larger wing areas couple candidates Curtiss 503C Seamew/Seagull isnt prettiest airplane world its short fat wing has area just under 390 square inches 44 inches span Vought 052U Kingfisher will have about same wing area Unfnrtunately Kingfisher almost ugly Seamew April 1998 125 Gary Hulls Brewster 340 Profile Carrier new models 1997 Muncie Nationals Andy Westerheim Junior Profile record holder Bill Bischoff design Fox power reverse rotation APC 9 x 6 prop XPC-1 Starjet flown John VIna Nostalgia Profile 97 Nats Howard Mottin design 1960s ST 35 power 4 Farman Mosqutto Box 1063 Lorain Ohio 44055 Phone 440-282-8354 pp rcrEI1 Big Flying Scale Kits Over Two Foot Span * Piper Cub$1995 * Stinson 125$1995 * Piper PA-lit$1995 *Jodel$1995 Semi-Scale Kits 002 Rubber Power 22 Span * Taylorcraft$1295 * Stinson Voyager $1295 * PC-it Porter 1295 J Contest-Sport Kits * Hornet Embryo . $1295 W* Hornet P-30$1795 Fits P-30 & Pee Wee Rules * NEW Beatonian Knltht$1295 Hornet P Outdoor Peanut Scale Kits 13 Span * Cub$1995 * Stinson 125$1995 * Vagabond$1095 * Farman$1095 *Jodel$1995 *Fike$1195 1/2 R/O Gas Electric Kits Fits Astro 035 Taylorcraft$4495 Stinson 125$4495 HARD TO FIND ITEMS Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping Minimum Shipping New 1998 Catalog $200 Ii OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC same dimensions IMP-lO 35-watt st motor technology 3or4celI operation SEND5 Flies 200300 sq wing area airplanes - TROLL-35 Motor Includes prop adopter capacitor & mounting hardware $1095 Please add $3 postage/handlflQ ts total prettier alternative fact its about prettiest propeller-driven aircraft built eyes Supermarine Seafire Seafire naval version Spitfire more-common elliptical-wing versions will build up about 350 square inchesjust slightly better other fighters era however low-altitude variant little two feet clipped wingtip variant will produce model about 430 square inches thinking new model new prototype anything MO-i dont stop looking until after youve considered Seamew Kingfisher Seafire Nostalgia Carrier still plenty time prepare Nostalgia Carrier event Nationals Profile combined Class I/Il will offered planning compete please let know can E-mail 713701477@compuservecom call 505 884-7405 sufficient interest Ill separate Class Class II will send rules ask model magazines still offer older designs eligible Nostalgia Carrier out-of-print plans can ordered Gleason Enterprises 1106 10th Dr SE Austin MN 55912 Opportunity Nationals Attendees always looking qualified willing volunteers assist running Carrier events Nationals willing work events want earn sincere appreciation fellow Camer modelers please consider volunteering least day can sign up contacting Bill Calkins 317 Snow Street Sugar Grove IL 60554 Tel [630] 466-1531 Brett Smith Navy Carrier flying lost its own November 18 Brett Smith succumbed cancer age 38 Brett event director Carrier events recent Sig contests well contestant Fargo loss will felt us AIRCRAFT eeSince 198c TEAM AIRCRAFT INC 1 0790MA Ivy Bluff Road Bradyville TN 37026 615-765-5397 FAX- 615-765-7234 E-Mailteamair@dekalbnet Web http//wwwtvalcom/TEi * Info Pack $10 Professional Video $15 MODEL HELICOPTER TECHNIQUE Use credit card order calling faxing 512312-0908 cuartnrly publication br intermediate enpert pilot 126 Model Aviation aks Mfg & Distributing Co Inc largest supplier control-line airplanes announces publication Catalog Number Eight complete source everything airplanes advice Send $300 Brodaks 100 Park Avenue Carmichaels PA 15320 4r- I -----------Dont wait longer experience awesome thrill ofpsintin sky SUPERCDRI II SUPERORI AVIATION SMOKE OIL penian snnke oil rnodnlne tEnt ic SaptCo intese enekI R CONVENENTuNITs ic Eanalleflt pOhieteCeJag lleall$1200 ic CoSistet nertnmane SUPERORI ha s mpetetien beat free ONe beat 0ev PethnhCone 14 1oal Josol$4000 00cc nec Linen 0 5$tnihe 50k irdnhY nenalentaen like AMP end TMEPOil lOgOIl$0000 Otere t55oall$27500 Order sending check MHT PO Box 96 Buda Texa8 78610
Edition: Model Aviation - 1998/04
Page Numbers: 125, 126
Edition: Model Aviation - 1998/04
Page Numbers: 125, 126
CONTROL LINE NAVY CARRIER Wing Loading Revisited reason current airplanes significantly larger ones flew 25 years ago slow speed important obtaining good score airplanes larger because lighter wing loading produces better low speed pointed out performance differences evident Nats last column Because slow speed has predominant role determining overall flight score majority models now built 44-inch wingspan limit Because wing loading determined dividing weight wing area basically two ways decrease wing loading can build model lighter can build model larger Building lighter has its limitations experience has shown best improvement performance comes building larger models Theoretically could start typical model quarter-century ago enlarge maximum wingspan allowed simply enlarging parts including wood thickness result would increase wing area proportional square linear dimension increase weight should increase cube dimensional increase Thus model like Short Seamew Model Aviation July 1975 started out 28 inches span 140 square inches wing area 30 ounces would grow 44 inches span 345 square inches wing area seven pounds Obviously weight formula incorrect because current models weigh considerably less seven pounds Nats Profile models averaged 43 ounces Class models full body averaged 48 ounces Class II 60 65 power averaged 55 ounces Although larger airplanes will heavier smaller ones parts Carrier models have fixed weight Engines fuel tanks control systems landing gear tail hooks etc basically same weight regardless size model part Another factor larger structures can built lighter equivalent strength Parts dont need increased thickness designs enlarged Covering paint thickness same always Weve also learned built-up fabric/film-covered wings quite adequate surviving low landing speeds todays models no longer believe have build Carrier models like Speed models Rat Racers Carrying theoretical thought processes performance would expect models full-scale aircraft Seamews speed decrease assume engine capable same power 1975 146% increase size top speed would drop 120 mph about 90 mph models arent full-scale airplanes Line drag significant part total drag line sizes have increased drag exposed engine same 25 years ago final factor high speed performance based actual top speed average speed standing start Actual top speeds models about 8% 10% higher high-speed score competition reality have seen about 10% 15% reduction high speed score because increased model size weight size increases however allow reduction wing loading nearly 40% other factors being equal newer models should capable least 20% better low speed compared Nostalgia-era brothers thoughts lead us would seem optimum model current competition would model built maximum wingspan built lightly possible As stated December issue good prototypes will produce model about 320-345 square inches wing area MO-l top end others will match Additional increases total performance assuming other factors equal require prototypes will provide larger wing areas couple candidates Curtiss 503C Seamew/Seagull isnt prettiest airplane world its short fat wing has area just under 390 square inches 44 inches span Vought 052U Kingfisher will have about same wing area Unfnrtunately Kingfisher almost ugly Seamew April 1998 125 Gary Hulls Brewster 340 Profile Carrier new models 1997 Muncie Nationals Andy Westerheim Junior Profile record holder Bill Bischoff design Fox power reverse rotation APC 9 x 6 prop XPC-1 Starjet flown John VIna Nostalgia Profile 97 Nats Howard Mottin design 1960s ST 35 power 4 Farman Mosqutto Box 1063 Lorain Ohio 44055 Phone 440-282-8354 pp rcrEI1 Big Flying Scale Kits Over Two Foot Span * Piper Cub$1995 * Stinson 125$1995 * Piper PA-lit$1995 *Jodel$1995 Semi-Scale Kits 002 Rubber Power 22 Span * Taylorcraft$1295 * Stinson Voyager $1295 * PC-it Porter 1295 J Contest-Sport Kits * Hornet Embryo . $1295 W* Hornet P-30$1795 Fits P-30 & Pee Wee Rules * NEW Beatonian Knltht$1295 Hornet P Outdoor Peanut Scale Kits 13 Span * Cub$1995 * Stinson 125$1995 * Vagabond$1095 * Farman$1095 *Jodel$1995 *Fike$1195 1/2 R/O Gas Electric Kits Fits Astro 035 Taylorcraft$4495 Stinson 125$4495 HARD TO FIND ITEMS Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping Minimum Shipping New 1998 Catalog $200 Ii OUR NEWEST MOTOR FOR FREE-FLIGHT OR RC same dimensions IMP-lO 35-watt st motor technology 3or4celI operation SEND5 Flies 200300 sq wing area airplanes - TROLL-35 Motor Includes prop adopter capacitor & mounting hardware $1095 Please add $3 postage/handlflQ ts total prettier alternative fact its about prettiest propeller-driven aircraft built eyes Supermarine Seafire Seafire naval version Spitfire more-common elliptical-wing versions will build up about 350 square inchesjust slightly better other fighters era however low-altitude variant little two feet clipped wingtip variant will produce model about 430 square inches thinking new model new prototype anything MO-i dont stop looking until after youve considered Seamew Kingfisher Seafire Nostalgia Carrier still plenty time prepare Nostalgia Carrier event Nationals Profile combined Class I/Il will offered planning compete please let know can E-mail 713701477@compuservecom call 505 884-7405 sufficient interest Ill separate Class Class II will send rules ask model magazines still offer older designs eligible Nostalgia Carrier out-of-print plans can ordered Gleason Enterprises 1106 10th Dr SE Austin MN 55912 Opportunity Nationals Attendees always looking qualified willing volunteers assist running Carrier events Nationals willing work events want earn sincere appreciation fellow Camer modelers please consider volunteering least day can sign up contacting Bill Calkins 317 Snow Street Sugar Grove IL 60554 Tel [630] 466-1531 Brett Smith Navy Carrier flying lost its own November 18 Brett Smith succumbed cancer age 38 Brett event director Carrier events recent Sig contests well contestant Fargo loss will felt us AIRCRAFT eeSince 198c TEAM AIRCRAFT INC 1 0790MA Ivy Bluff Road Bradyville TN 37026 615-765-5397 FAX- 615-765-7234 E-Mailteamair@dekalbnet Web http//wwwtvalcom/TEi * Info Pack $10 Professional Video $15 MODEL HELICOPTER TECHNIQUE Use credit card order calling faxing 512312-0908 cuartnrly publication br intermediate enpert pilot 126 Model Aviation aks Mfg & Distributing Co Inc largest supplier control-line airplanes announces publication Catalog Number Eight complete source everything airplanes advice Send $300 Brodaks 100 Park Avenue Carmichaels PA 15320 4r- I -----------Dont wait longer experience awesome thrill ofpsintin sky SUPERCDRI II SUPERORI AVIATION SMOKE OIL penian snnke oil rnodnlne tEnt ic SaptCo intese enekI R CONVENENTuNITs ic Eanalleflt pOhieteCeJag lleall$1200 ic CoSistet nertnmane SUPERORI ha s mpetetien beat free ONe beat 0ev PethnhCone 14 1oal Josol$4000 00cc nec Linen 0 5$tnihe 50k irdnhY nenalentaen like AMP end TMEPOil lOgOIl$0000 Otere t55oall$27500 Order sending check MHT PO Box 96 Buda Texa8 78610
