ORDER TOLL FREE 800-854-8411 IN CALIFORNIA 8004728456 IN LOS ANGELES 714-963-9881 Hob Shack EhhEmEEhhhhEEY SUPERMARKET OF HORSY GOODS Shop mail4 18480 BANDILIER CIRCLE FOUNTAIN VALLEY CA 92708 Super Discounts Now PRICES GOOD THRU FEB 1983 POWER-START STARTER Powerful 12 VDC ter 049 ng met planes cars & boats NO 1153862499 LIST $4995 FUTABA FP-4L 4 channel sysysm 3 servos full N -Cd operat servo revers ng Sw tches trays hardware frequency flag nstruct book 99 a&swRi P-51 Mustang ScaleNO526327 P-Si Mustang FunLIST $4495 R/C wood kit Span 51 Area 490 sqin Engine 19 40 Radio 4 ch BA FGK SERIES FP 5FGK LIST $34995 95 FP 6FGK LIST $36995 $19995 LIST 33995. $21995 1983 NEW YEARS SPORT FLYER NEVV YEARS 1983 SPORT FLYER ready now big FREE colorfuI 24 page VALUE PACKED issue LOADED AFTER CXRISTMAS CLEARANCE sales articles interest modeler FUN contests much DONT MISS THIS ONE CALL US TOLL FREE AFTER 500 PM PACIFIC TIME THEU FEBRUARY 15 1983 Special operators will take name address nameN II address cityI IN state ______________________ zipI mail order catalogs 18480 BANDILIER CIRCLE II FOUNTAIN VALLEY CA 928708 • - II etters t6e cd7tcr Alt letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 Thanks Ed Whitten should like express special thanks Ed Whitten concern assistance helping few beginners Indoor modeling Ed has gracious enough practice what has preaching Junior Flight page some time gave series eve ning workshops teachers supervisors New York City Public Schools interest promote modeling least 100 students teacher per haps initiate city-wide model flying contest among schools Giving time ex pertise has feel act love compulsion part son Richard assisted critical times counted commendation Ed Richard real job needed doing well done Samuel Garry Supervisor Bureau Industrial Arts Joel McDonald & Howard Smith Industrial Arts Teachers Ellen Goldstein Science Teacher Ed Richard set good example us interested solving Junior prob lem followthat digging person al basis waiting George Agostas Jungmeisters After reading December issue learned Gottfried Leibnez must have felt announced formulation calculus found out Sir Isaac Newton beaten him What may well ask has got modeling Bear Ill tell sad story Two years ago having seen picture Art Yadvens Jungmeister James Gilberts Great Planes felt compelled build model careful attention detail limited modeling skills might permit So bought Pica kit went work Gil berts pictures guide modifying kit accordine1v out got place completed model early November about invite neighbors view masterpiece December issue arrived No show pictured friends whispering other Big deal follow instruc tions Arthur Post Stamford CT December issue showed Emil Agostas magnificent one-thirdscale Jungmeister coverand equal ly beautiful one-quarter-scale model inside page include couple pictures Arthurs Jungmeister magazine re production does justice think readers will tell model also beautiful should proud Props November Letters tolumn p 65 pre sented some comments Mark Julicher props work Based Fig 2 showing section cambered airfoil concluded becomes clear prop cant travel farther geometric pitch dictates direct contradiction earlier article subject read both article Marks comments must wonder correct Perhaps follow ing comment will help decide Airfoils have geometric chord either bottom surface line Clark Y line between center leading edge radius trailing edge 0012 2412 4412 etc also have zero lift chord displaced geometric chord proportional camber airfoil generally slightly under degree per percent camber geometric angle tack angular difference between Continued page 10 8 Model Aviation ] Ive enclosed few pictures model sad-looking gent pictures wondering whether fly plane off very high roof certain crash take up knitting hobby POSTAGE AND HANDLING CHARGES I$000 $2500 add $300 II$2501 0 add $400 IOver $5000 add $500 fornia residents add 6 state sales tax None details too dstttcutt untsl got exhaust stack finally worked #d1dd NEW Center Thrust Hand Made Quality Fits Fixed Removable Wing Coming Soon 1AA Racer Designed Quickie 500 racing sport flying Kit features hand cut balsa ply pprts Emsy MILLS Insta Build System Custom aluminum gear exclusive torque absorption nose structure Hardware pack full size plans Americas highest quality Quickie Dave Latshas famous T Tailed Quarter MWget Racer ts now produced ~Sj#4 us better ever Coming Soon Rivets Fonnutal F1 Yeflow Fever Racing Team Tahbt wrapped new kit Helps prevent ma order ahipping dunage SSee local dealer erder dbwcfMd residents add 5% tax Al RPLANE MODELS Hampleton Rd Riva MD 21140 - Improves Engine Life e Low Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body Just finished sanding citabria duplicator made job easier faster professional Sest money Ive ever speht Frank Medaglia Franks Hobby House Saugas Mass ONLY $1595 extra hands covering ha arnost helpful tool novice expert Leaves hands free iron dope etc Add $200 shipping AT YOUR DEALER OR ORDER DIRECT $119 Dealer STANDARD PACKAGE $1995 Includes assembled duplicator sevan popular patterns aetting tool approxImately 35 roil stlckback sandpaper Add $200 shipping DELUXE PACKAGE $4995 Includes two assembled duplicators forty-four patterns plastic gauge accurately selecting pattern 6 stlckback sandpaper Add $400 shipping W ELDON J LIND CO 2912 Walker Lee Los Alamitos CA 90720 213 439-0231 431-6750 relative wind geometric chord line effective angle attack angular difference between relative wind zero lift chord line Clark Y airfoil has 58% camber zero lift chord 5 degrees geometric chord clear relative wind approaches parallel geometric chord effective angle attack actually 5 degrees gives CLvalue about 037 AR nerates quite bit thrust relative wind approaching about degree negative geometric chord CL about 030 devel oped Lots commercial props design lift coefficient 03 have built suc cessfully used Just remember before deciding whether wing propeller will develop posi tive negative lift thrust make sure comparing relative wind line zero lift chord Also ever try use equations incidence trim must use zero lift chord will get correct answer John Brownlee Decatur AL Fabulous Hank Hank Clark did nice article Hank Clark have known guy years relate thing did does article would have 10 times longer Yes rode bike airports around New York take pictures just bunch us also did time took trains buses walked hitchhikedbut ol Hank rode bike darn good phy sical Warren D Shipp San Diego CA Hank Clark quite guywouldnt know hed riding bike backwards old picture hasn t changed other picture 1982 shows Hank pushing Kevin grandsonon skates yet Let us quote Hank . grown up kids think its great grown-up kid too What talent have Hank ways Anyone wishes know about Hank please look article ap peared June 1982 issue 10 Model Aviation r Introducing THE DUPLICATOR MKI PAT WORLDS FIRST ADJUSTABLE HAND SANDER no guess work pauerns cover mast eaga setting toolsanding 112 through 114 scale creates ceautiful edges machine-like finish t caught him rime Roosevelt Field photo enclosed event anyone doubts rode bike airports well pictures dont lie L
Edition: Model Aviation - 1983/02
Page Numbers: 8, 10
ORDER TOLL FREE 800-854-8411 IN CALIFORNIA 8004728456 IN LOS ANGELES 714-963-9881 Hob Shack EhhEmEEhhhhEEY SUPERMARKET OF HORSY GOODS Shop mail4 18480 BANDILIER CIRCLE FOUNTAIN VALLEY CA 92708 Super Discounts Now PRICES GOOD THRU FEB 1983 POWER-START STARTER Powerful 12 VDC ter 049 ng met planes cars & boats NO 1153862499 LIST $4995 FUTABA FP-4L 4 channel sysysm 3 servos full N -Cd operat servo revers ng Sw tches trays hardware frequency flag nstruct book 99 a&swRi P-51 Mustang ScaleNO526327 P-Si Mustang FunLIST $4495 R/C wood kit Span 51 Area 490 sqin Engine 19 40 Radio 4 ch BA FGK SERIES FP 5FGK LIST $34995 95 FP 6FGK LIST $36995 $19995 LIST 33995. $21995 1983 NEW YEARS SPORT FLYER NEVV YEARS 1983 SPORT FLYER ready now big FREE colorfuI 24 page VALUE PACKED issue LOADED AFTER CXRISTMAS CLEARANCE sales articles interest modeler FUN contests much DONT MISS THIS ONE CALL US TOLL FREE AFTER 500 PM PACIFIC TIME THEU FEBRUARY 15 1983 Special operators will take name address nameN II address cityI IN state ______________________ zipI mail order catalogs 18480 BANDILIER CIRCLE II FOUNTAIN VALLEY CA 928708 • - II etters t6e cd7tcr Alt letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 Thanks Ed Whitten should like express special thanks Ed Whitten concern assistance helping few beginners Indoor modeling Ed has gracious enough practice what has preaching Junior Flight page some time gave series eve ning workshops teachers supervisors New York City Public Schools interest promote modeling least 100 students teacher per haps initiate city-wide model flying contest among schools Giving time ex pertise has feel act love compulsion part son Richard assisted critical times counted commendation Ed Richard real job needed doing well done Samuel Garry Supervisor Bureau Industrial Arts Joel McDonald & Howard Smith Industrial Arts Teachers Ellen Goldstein Science Teacher Ed Richard set good example us interested solving Junior prob lem followthat digging person al basis waiting George Agostas Jungmeisters After reading December issue learned Gottfried Leibnez must have felt announced formulation calculus found out Sir Isaac Newton beaten him What may well ask has got modeling Bear Ill tell sad story Two years ago having seen picture Art Yadvens Jungmeister James Gilberts Great Planes felt compelled build model careful attention detail limited modeling skills might permit So bought Pica kit went work Gil berts pictures guide modifying kit accordine1v out got place completed model early November about invite neighbors view masterpiece December issue arrived No show pictured friends whispering other Big deal follow instruc tions Arthur Post Stamford CT December issue showed Emil Agostas magnificent one-thirdscale Jungmeister coverand equal ly beautiful one-quarter-scale model inside page include couple pictures Arthurs Jungmeister magazine re production does justice think readers will tell model also beautiful should proud Props November Letters tolumn p 65 pre sented some comments Mark Julicher props work Based Fig 2 showing section cambered airfoil concluded becomes clear prop cant travel farther geometric pitch dictates direct contradiction earlier article subject read both article Marks comments must wonder correct Perhaps follow ing comment will help decide Airfoils have geometric chord either bottom surface line Clark Y line between center leading edge radius trailing edge 0012 2412 4412 etc also have zero lift chord displaced geometric chord proportional camber airfoil generally slightly under degree per percent camber geometric angle tack angular difference between Continued page 10 8 Model Aviation ] Ive enclosed few pictures model sad-looking gent pictures wondering whether fly plane off very high roof certain crash take up knitting hobby POSTAGE AND HANDLING CHARGES I$000 $2500 add $300 II$2501 0 add $400 IOver $5000 add $500 fornia residents add 6 state sales tax None details too dstttcutt untsl got exhaust stack finally worked #d1dd NEW Center Thrust Hand Made Quality Fits Fixed Removable Wing Coming Soon 1AA Racer Designed Quickie 500 racing sport flying Kit features hand cut balsa ply pprts Emsy MILLS Insta Build System Custom aluminum gear exclusive torque absorption nose structure Hardware pack full size plans Americas highest quality Quickie Dave Latshas famous T Tailed Quarter MWget Racer ts now produced ~Sj#4 us better ever Coming Soon Rivets Fonnutal F1 Yeflow Fever Racing Team Tahbt wrapped new kit Helps prevent ma order ahipping dunage SSee local dealer erder dbwcfMd residents add 5% tax Al RPLANE MODELS Hampleton Rd Riva MD 21140 - Improves Engine Life e Low Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body Just finished sanding citabria duplicator made job easier faster professional Sest money Ive ever speht Frank Medaglia Franks Hobby House Saugas Mass ONLY $1595 extra hands covering ha arnost helpful tool novice expert Leaves hands free iron dope etc Add $200 shipping AT YOUR DEALER OR ORDER DIRECT $119 Dealer STANDARD PACKAGE $1995 Includes assembled duplicator sevan popular patterns aetting tool approxImately 35 roil stlckback sandpaper Add $200 shipping DELUXE PACKAGE $4995 Includes two assembled duplicators forty-four patterns plastic gauge accurately selecting pattern 6 stlckback sandpaper Add $400 shipping W ELDON J LIND CO 2912 Walker Lee Los Alamitos CA 90720 213 439-0231 431-6750 relative wind geometric chord line effective angle attack angular difference between relative wind zero lift chord line Clark Y airfoil has 58% camber zero lift chord 5 degrees geometric chord clear relative wind approaches parallel geometric chord effective angle attack actually 5 degrees gives CLvalue about 037 AR nerates quite bit thrust relative wind approaching about degree negative geometric chord CL about 030 devel oped Lots commercial props design lift coefficient 03 have built suc cessfully used Just remember before deciding whether wing propeller will develop posi tive negative lift thrust make sure comparing relative wind line zero lift chord Also ever try use equations incidence trim must use zero lift chord will get correct answer John Brownlee Decatur AL Fabulous Hank Hank Clark did nice article Hank Clark have known guy years relate thing did does article would have 10 times longer Yes rode bike airports around New York take pictures just bunch us also did time took trains buses walked hitchhikedbut ol Hank rode bike darn good phy sical Warren D Shipp San Diego CA Hank Clark quite guywouldnt know hed riding bike backwards old picture hasn t changed other picture 1982 shows Hank pushing Kevin grandsonon skates yet Let us quote Hank . grown up kids think its great grown-up kid too What talent have Hank ways Anyone wishes know about Hank please look article ap peared June 1982 issue 10 Model Aviation r Introducing THE DUPLICATOR MKI PAT WORLDS FIRST ADJUSTABLE HAND SANDER no guess work pauerns cover mast eaga setting toolsanding 112 through 114 scale creates ceautiful edges machine-like finish t caught him rime Roosevelt Field photo enclosed event anyone doubts rode bike airports well pictures dont lie L