L M STILL ALIVE may have oticed column missing December 92 January 93 issues came surprises too first second times either regular column special coverage has missing issue Model Aviation 171/2 years Ive writing think know what happened Ill tell about end months column As write have assured will regular column February issue both regular column N-PAC coverage March issue column youre now reading should April issue FAI Team Selection finals have announced June 7-12 1993 Corvallis Oregon Mike Dunphy Contest Director Mike good Contest Director pattern judge should well-run contest Im looking forward 93 event should significantly different past Team Selection finals number contestants will reduced due restrictive entry standards past large number fliers met qualifying standards thing kept number attendees manageable cost entering US FAt program expenses involved attending contest IR ADHO CONTROL Several interesting letters arrived lately would like share parts some first Bill Kite Kingsport Tennessee wrote AMA district ought have Complaint Department lack better name time established district representative Contest Board flier could call something attention pertaining action lack action CD have seen heard events being canceled due lack contestants showing up combining classes last minute some other things rule book forbids way CD could informed error asked better manage contest repeated could steps taken refuse sanctions future contests way things now seems someone runs poorly scoffs rules contestant has no recourse except gripe other fliers boycott future events AEROBATICS ink Bill has good idea dont know Contest Board member correct individual policeman though board members currently involved contest sanctions would either have given authority inform District Contest Coordinator recommend sanction particular contest would have approval chain sanction example could have potential contest CD send sanction request Contest Board member would forward District Contest Coordinator action no black marks against CD sponsoring club Are opinions Editors note AMA Technical Director Bob Underwood notes concerns such expressed Mr Kite investigated AMA Headquarterswhen reported system does exist whereby CDs can placed probation have CD status revoked continued violations standards procedures Another letter Ralph Thomas PO Box 32733 Decatur GA 30034 wrote April 1993 77 Ron Van Puttes 05 Hanno Special-powered LA-i very competitive pattern machine does beginner really need airplane like get started Eclipse has superseded Henry Pioruns new Meridian design still potent force pattern flyingbut does Novice flier really need lot Sportsman fliers think need Chip Hydes Jekyll designs competitive truth dont Chip could win flying Falcon 56 Beginning pattern fliers dont need complexity airplanes like Bill Cunninghams Malibu grow pattern fiying proficiency See text details SIZEUSEPRICE 57X31159 6x21159 63X4395 65X292395 65X372395 65X503395 65X553395 65 X6O3395 65X653395 7x315159 7X415159 7X5159 7X6159 7X7159 7X8159 7X9159 7X10159 78X414395 78X66395 78X76395 8X 735395 8X414179 8X5179 8X6179 8X7179 8X8179 8X9179 8X10179 9X416199 9X516199 9X6199 9X7199 APC PROPELLERS SIZEUSE PRICE 9X8199 9X9199 9X1t199 925 X 50.. 4395 925X525 4395 925 X 55.. 4395 925X575 4395 925 X 60.. 4395 95 X 6SN.. 5395 95 X 7ON .. S 5 95 X 7SN .. S 5 95 X 8ON .. S 5 95 X 85N .. 5 5 9X655395 9X75S395 9X855395 95 X4511229 10X3229 10x4229 10X5229 10X6229 10X7229 10X8229 10X9229 1OX1O229 105X45 11395 11X3249 11X4249 11XS249 11X6249 11X7249 liXO249 Sound Suppression Design High Thrust Efficiency Long Fiber Advanced Composite Material Continually Evolving Design Manufactured Landing Products PO Box 938 Knights Landing CA 98645 SIZEUSE PRICE 11X9249 12X6289 12X7289 12X8289 11X1O7795 liXil7795 11X127795 11X12W7795 11 X137795 11X147795 115X48289 1225 X 3758349 12X97795 12X9W7795 12X107795 12X1OW7795 12X117795 12X11N7795 12X1157795 12X127795 12X1257795 12X12N7795 12X137795 12X13N7795 12X147795 125X97795 125 X1O7795 125X117795 12SX1157795 125X127795 12SX 1257795 125X137795 SIZEUSE PRICE 13X6425 13X7425 13X8425 13X97795 13X107795 13X117795 13X13N9795 13X13SN.9795 1355971295 13551071295 13SX11SN 71295 135X125 101295 1355133 10. 1295 1355135 101295 135 5 14 .. 10 . 1295 135 X 14W 1295 14XSN1295 14561295 14581295 145101295 145121295 14512 N..10.1295 14513101295 14513N101295 14X135 101295 145 135N . 10 . 1295 14X14101295 14514N101295 144 X 105 10. 1295 144512 101295 144513 101295 145 X 14N . 10 . 1295 SIZEUSE PRICE 145 X 145N 10. 1295 1558101295 15510101295 15511101295 15512101295 16581295 16X101295 165121295 165141295 165161295 956PPusher 395 1OX6PPusher 395 1OX7PPusher 395 1058PPusher 395 11 X6P..Pusher 395 11 57P Pusher 395 145 6P .. Pusher 1295 MULTI-BLADE 2 Replaceable Blades 18582200 185102200 18512122200 185142200 18X162200 18X182200 2058122500 20X102500 205122500 20X142500 205162500 205182500 SIZEUSE PRICE 205202500 21 X 122500 22583100 22510133100 22512133100 225143100 22X163100 225183100 225203100 225223100 245103800 245123800 24a143800 24X163800 24X183800 24 5 203800 24 X 223800 2 Blade Huh 19- 10 3000 2 Blade Huh 20- 21 3500 2 Blade Huh 22 . 4000 2 Blade Huh 24 . 6000 MULTI-BLADE 3 Replaceable Blades 17X103300 18X103300 19X113300 20510133700 20512133700 205143700 215103700 215123700 SIZEUSE PRICE 22X104500 225124500 225144500 225164500 24X105500 24X125500 245145500 24X165500 3 Blade Huh 17-19 4500 3 Blude Huh 20-21 5500 3 Blade Hub 226500 3 Blade Huh 249000 CURRENT USAGES 1049 Free Fliulit 2isCombuC 3la-laFylon 425 PylOn 540 Pylon e3UComhuC 7eu PaSern aCL Seunt 9120 Warbird le12llPu5ern 1140 Free Fliuhe 1235CC 137eCC 1421-25 Free FliuSt 1515 Free Fliehe 29 Free Fliehe Contact local hobby dealer first doesnt have what need order direct England Enterprises 916-661-6515 occasionally travel air other cities United States would like able participate pattern contests cities problem ishow take along pattern-size aircraft Escape Summit etc have pay outrageous charges because package too long Apparently weight problem domestic flights maximum size 80 inches totai width h th am sure am person has run problem would appreciate advice could give fact might good subject future column agree However though dont have solution know lot can help Ralph others similar problem about writing can spread word future column Are K-factors okay Theres lot discussion lately about claims Kfactors have improperly awarded lot maneuvers However no seemed have good idea what about situation got letter Sam Turner Land 0 Lakes Florida Sam has some interesting ideas about what Kfactors Excerpts Sams letter follow Ive very concerned ever since penalty flopping stall turn has determined zero brought about strict interpretation 15-degree rule someone decided thrust upon us pattern fliers contention K-factor should equalizer allows differences complexity therefore difficulty penalty inflicted maneuvers Thus complex maneuvers should have higher K-factors simple maneuvers should carry low K-factors way has heen Apparently problem has developed because quality flying has improved point range scores between top fliers has become too compressed contend rather adding new rules new complexity scoring system need correct system already have Lets look what weve done over past few years K-factors themselves Weve added lower classes purpose better differentiation difficulty lower class maneuvers same time weve added complex maneuvers upper classes BUT weve kept same K-factor range five just fit maneuvers existing range think limited range problem existing system maneuver like Figure M Half Rolls lot separate elements four quarter-loops four rolling segments two yaw segments total 10 segments However just flopping stalls now get zero maneuver Consider now Square Loop Half Rolls consists four quarter-loops four half-rolls Both Figure M Half Rolls K 5 maneuvers no element Square Loop will cause its instant total demise thats problem current interpretation 15-degree rule residesit too lethal some maneuvers Heres what think should done fix problem Keep 15-degree rule apply aircraft heading meaning ground track correct K-factors correspond directly complexity individual maneuvers Consider Takeoff Loop Roll essentially single-controlinput maneuvers Give K-factor 1 Give multiples Loop Roll multiple basic Thus Three Inside Loops gets 3 Three Horizontal Rolls gets 3 Add point Outside Loops being outside get 4 complex maneuvers base K number axis inputs required maneuver simple Stall Turn would get pitch pitch ban Eight gets pitch h melmana Turn gets pitch 2 Straight Inverted Flight gets roll rta like now now consider Figure M pitch pitch pitch Model Aviation ODUCING NEW IN PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock R/C engine thread sizes 5 sizes PROP HUBS ranging 1to 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem.help phone call away.See hobby dealer call us direct. Up, TM RU Made ntheUSA PRECISION MODEL PRODUCTS Romco Manufacturing Inc OUALITY ATILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713/943-1867 Figure M w/Rolls pitch roll h yaw h wnward 450 Snap h h alanche h h p Hat h h h h verse Top Hat Hat rted tice maneuvers lot involved get highest K-factors increased weight complexity will penalize total points errors like flopped Stall Turns Now handle turnaround maneuvers Due decreased ability see actual geometry heading errors end maneuvers should worth half K-factors computed above believe system expanding range K-factors will prove make judging consistent increase point spread eliminate instant demise judging confusion now exists Sam has made some very good points K-factors due review revision However personally disagree should use 15-degree rule heading errors think flopped Stall Turn should earn zero fact believe should keep 15-degree rule rolling errors also institute 5-degree rule heading errors can see 50 pitch yaw error maneuvers takes about 150 roll error before can see Comments Regarding Sams claim theres no element Square Loop wIHalf Rolls causes its instant total demise must have watched some flights still trying figure out maneuver can remember several flights strong crosswind Pensacola contest judges really sweating out maneuver Which best Quite few letters have coming way lately would-be new pattern fliers asking what best designs first second airplanes have own opinions someone claimed level pattern experience made difficult understand what new pattern fliers airplane should really dont think Ive lost perspective regarding lower classes however am curious whether opinions out really differ about what good airplanes new pattern flier Let hear theres resemblance consensus Ill publish results missing columns now heres what think cause problem December 92 issue should have included NSRCA Pan-American Championships N-PAC coverage lieu regular column However magazine management decided insert important and/or older special articles N-PAC report slid right calendar Since sent regular column therefore nothing December issue came time January 93 issue same thing happened N-PAC coverage got bumped other special articles Somehow management forgot already January 93 regular column didnt put either So January-intended column finally appeared February issue back regular schedule again Am right t Cover Continued paqe 74 issues cover third featuring painting Benjamin created Desert Storm cover August 1991 Model Aviation Last year March issue cover showed Benjamins rendition air race Gee Bee Model Y Monocoupe battling out pylon What Model Aviation readers may realize Benjamin dedicated model building aviation art Continued page 167 April 1993 79
Edition: Model Aviation - 1993/04
Page Numbers: 77, 78, 79
L M STILL ALIVE may have oticed column missing December 92 January 93 issues came surprises too first second times either regular column special coverage has missing issue Model Aviation 171/2 years Ive writing think know what happened Ill tell about end months column As write have assured will regular column February issue both regular column N-PAC coverage March issue column youre now reading should April issue FAI Team Selection finals have announced June 7-12 1993 Corvallis Oregon Mike Dunphy Contest Director Mike good Contest Director pattern judge should well-run contest Im looking forward 93 event should significantly different past Team Selection finals number contestants will reduced due restrictive entry standards past large number fliers met qualifying standards thing kept number attendees manageable cost entering US FAt program expenses involved attending contest IR ADHO CONTROL Several interesting letters arrived lately would like share parts some first Bill Kite Kingsport Tennessee wrote AMA district ought have Complaint Department lack better name time established district representative Contest Board flier could call something attention pertaining action lack action CD have seen heard events being canceled due lack contestants showing up combining classes last minute some other things rule book forbids way CD could informed error asked better manage contest repeated could steps taken refuse sanctions future contests way things now seems someone runs poorly scoffs rules contestant has no recourse except gripe other fliers boycott future events AEROBATICS ink Bill has good idea dont know Contest Board member correct individual policeman though board members currently involved contest sanctions would either have given authority inform District Contest Coordinator recommend sanction particular contest would have approval chain sanction example could have potential contest CD send sanction request Contest Board member would forward District Contest Coordinator action no black marks against CD sponsoring club Are opinions Editors note AMA Technical Director Bob Underwood notes concerns such expressed Mr Kite investigated AMA Headquarterswhen reported system does exist whereby CDs can placed probation have CD status revoked continued violations standards procedures Another letter Ralph Thomas PO Box 32733 Decatur GA 30034 wrote April 1993 77 Ron Van Puttes 05 Hanno Special-powered LA-i very competitive pattern machine does beginner really need airplane like get started Eclipse has superseded Henry Pioruns new Meridian design still potent force pattern flyingbut does Novice flier really need lot Sportsman fliers think need Chip Hydes Jekyll designs competitive truth dont Chip could win flying Falcon 56 Beginning pattern fliers dont need complexity airplanes like Bill Cunninghams Malibu grow pattern fiying proficiency See text details SIZEUSEPRICE 57X31159 6x21159 63X4395 65X292395 65X372395 65X503395 65X553395 65 X6O3395 65X653395 7x315159 7X415159 7X5159 7X6159 7X7159 7X8159 7X9159 7X10159 78X414395 78X66395 78X76395 8X 735395 8X414179 8X5179 8X6179 8X7179 8X8179 8X9179 8X10179 9X416199 9X516199 9X6199 9X7199 APC PROPELLERS SIZEUSE PRICE 9X8199 9X9199 9X1t199 925 X 50.. 4395 925X525 4395 925 X 55.. 4395 925X575 4395 925 X 60.. 4395 95 X 6SN.. 5395 95 X 7ON .. S 5 95 X 7SN .. S 5 95 X 8ON .. S 5 95 X 85N .. 5 5 9X655395 9X75S395 9X855395 95 X4511229 10X3229 10x4229 10X5229 10X6229 10X7229 10X8229 10X9229 1OX1O229 105X45 11395 11X3249 11X4249 11XS249 11X6249 11X7249 liXO249 Sound Suppression Design High Thrust Efficiency Long Fiber Advanced Composite Material Continually Evolving Design Manufactured Landing Products PO Box 938 Knights Landing CA 98645 SIZEUSE PRICE 11X9249 12X6289 12X7289 12X8289 11X1O7795 liXil7795 11X127795 11X12W7795 11 X137795 11X147795 115X48289 1225 X 3758349 12X97795 12X9W7795 12X107795 12X1OW7795 12X117795 12X11N7795 12X1157795 12X127795 12X1257795 12X12N7795 12X137795 12X13N7795 12X147795 125X97795 125 X1O7795 125X117795 12SX1157795 125X127795 12SX 1257795 125X137795 SIZEUSE PRICE 13X6425 13X7425 13X8425 13X97795 13X107795 13X117795 13X13N9795 13X13SN.9795 1355971295 13551071295 13SX11SN 71295 135X125 101295 1355133 10. 1295 1355135 101295 135 5 14 .. 10 . 1295 135 X 14W 1295 14XSN1295 14561295 14581295 145101295 145121295 14512 N..10.1295 14513101295 14513N101295 14X135 101295 145 135N . 10 . 1295 14X14101295 14514N101295 144 X 105 10. 1295 144512 101295 144513 101295 145 X 14N . 10 . 1295 SIZEUSE PRICE 145 X 145N 10. 1295 1558101295 15510101295 15511101295 15512101295 16581295 16X101295 165121295 165141295 165161295 956PPusher 395 1OX6PPusher 395 1OX7PPusher 395 1058PPusher 395 11 X6P..Pusher 395 11 57P Pusher 395 145 6P .. Pusher 1295 MULTI-BLADE 2 Replaceable Blades 18582200 185102200 18512122200 185142200 18X162200 18X182200 2058122500 20X102500 205122500 20X142500 205162500 205182500 SIZEUSE PRICE 205202500 21 X 122500 22583100 22510133100 22512133100 225143100 22X163100 225183100 225203100 225223100 245103800 245123800 24a143800 24X163800 24X183800 24 5 203800 24 X 223800 2 Blade Huh 19- 10 3000 2 Blade Huh 20- 21 3500 2 Blade Huh 22 . 4000 2 Blade Huh 24 . 6000 MULTI-BLADE 3 Replaceable Blades 17X103300 18X103300 19X113300 20510133700 20512133700 205143700 215103700 215123700 SIZEUSE PRICE 22X104500 225124500 225144500 225164500 24X105500 24X125500 245145500 24X165500 3 Blade Huh 17-19 4500 3 Blude Huh 20-21 5500 3 Blade Hub 226500 3 Blade Huh 249000 CURRENT USAGES 1049 Free Fliulit 2isCombuC 3la-laFylon 425 PylOn 540 Pylon e3UComhuC 7eu PaSern aCL Seunt 9120 Warbird le12llPu5ern 1140 Free Fliuhe 1235CC 137eCC 1421-25 Free FliuSt 1515 Free Fliehe 29 Free Fliehe Contact local hobby dealer first doesnt have what need order direct England Enterprises 916-661-6515 occasionally travel air other cities United States would like able participate pattern contests cities problem ishow take along pattern-size aircraft Escape Summit etc have pay outrageous charges because package too long Apparently weight problem domestic flights maximum size 80 inches totai width h th am sure am person has run problem would appreciate advice could give fact might good subject future column agree However though dont have solution know lot can help Ralph others similar problem about writing can spread word future column Are K-factors okay Theres lot discussion lately about claims Kfactors have improperly awarded lot maneuvers However no seemed have good idea what about situation got letter Sam Turner Land 0 Lakes Florida Sam has some interesting ideas about what Kfactors Excerpts Sams letter follow Ive very concerned ever since penalty flopping stall turn has determined zero brought about strict interpretation 15-degree rule someone decided thrust upon us pattern fliers contention K-factor should equalizer allows differences complexity therefore difficulty penalty inflicted maneuvers Thus complex maneuvers should have higher K-factors simple maneuvers should carry low K-factors way has heen Apparently problem has developed because quality flying has improved point range scores between top fliers has become too compressed contend rather adding new rules new complexity scoring system need correct system already have Lets look what weve done over past few years K-factors themselves Weve added lower classes purpose better differentiation difficulty lower class maneuvers same time weve added complex maneuvers upper classes BUT weve kept same K-factor range five just fit maneuvers existing range think limited range problem existing system maneuver like Figure M Half Rolls lot separate elements four quarter-loops four rolling segments two yaw segments total 10 segments However just flopping stalls now get zero maneuver Consider now Square Loop Half Rolls consists four quarter-loops four half-rolls Both Figure M Half Rolls K 5 maneuvers no element Square Loop will cause its instant total demise thats problem current interpretation 15-degree rule residesit too lethal some maneuvers Heres what think should done fix problem Keep 15-degree rule apply aircraft heading meaning ground track correct K-factors correspond directly complexity individual maneuvers Consider Takeoff Loop Roll essentially single-controlinput maneuvers Give K-factor 1 Give multiples Loop Roll multiple basic Thus Three Inside Loops gets 3 Three Horizontal Rolls gets 3 Add point Outside Loops being outside get 4 complex maneuvers base K number axis inputs required maneuver simple Stall Turn would get pitch pitch ban Eight gets pitch h melmana Turn gets pitch 2 Straight Inverted Flight gets roll rta like now now consider Figure M pitch pitch pitch Model Aviation ODUCING NEW IN PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock R/C engine thread sizes 5 sizes PROP HUBS ranging 1to 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem.help phone call away.See hobby dealer call us direct. Up, TM RU Made ntheUSA PRECISION MODEL PRODUCTS Romco Manufacturing Inc OUALITY ATILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713/943-1867 Figure M w/Rolls pitch roll h yaw h wnward 450 Snap h h alanche h h p Hat h h h h verse Top Hat Hat rted tice maneuvers lot involved get highest K-factors increased weight complexity will penalize total points errors like flopped Stall Turns Now handle turnaround maneuvers Due decreased ability see actual geometry heading errors end maneuvers should worth half K-factors computed above believe system expanding range K-factors will prove make judging consistent increase point spread eliminate instant demise judging confusion now exists Sam has made some very good points K-factors due review revision However personally disagree should use 15-degree rule heading errors think flopped Stall Turn should earn zero fact believe should keep 15-degree rule rolling errors also institute 5-degree rule heading errors can see 50 pitch yaw error maneuvers takes about 150 roll error before can see Comments Regarding Sams claim theres no element Square Loop wIHalf Rolls causes its instant total demise must have watched some flights still trying figure out maneuver can remember several flights strong crosswind Pensacola contest judges really sweating out maneuver Which best Quite few letters have coming way lately would-be new pattern fliers asking what best designs first second airplanes have own opinions someone claimed level pattern experience made difficult understand what new pattern fliers airplane should really dont think Ive lost perspective regarding lower classes however am curious whether opinions out really differ about what good airplanes new pattern flier Let hear theres resemblance consensus Ill publish results missing columns now heres what think cause problem December 92 issue should have included NSRCA Pan-American Championships N-PAC coverage lieu regular column However magazine management decided insert important and/or older special articles N-PAC report slid right calendar Since sent regular column therefore nothing December issue came time January 93 issue same thing happened N-PAC coverage got bumped other special articles Somehow management forgot already January 93 regular column didnt put either So January-intended column finally appeared February issue back regular schedule again Am right t Cover Continued paqe 74 issues cover third featuring painting Benjamin created Desert Storm cover August 1991 Model Aviation Last year March issue cover showed Benjamins rendition air race Gee Bee Model Y Monocoupe battling out pylon What Model Aviation readers may realize Benjamin dedicated model building aviation art Continued page 167 April 1993 79
Edition: Model Aviation - 1993/04
Page Numbers: 77, 78, 79
L M STILL ALIVE may have oticed column missing December 92 January 93 issues came surprises too first second times either regular column special coverage has missing issue Model Aviation 171/2 years Ive writing think know what happened Ill tell about end months column As write have assured will regular column February issue both regular column N-PAC coverage March issue column youre now reading should April issue FAI Team Selection finals have announced June 7-12 1993 Corvallis Oregon Mike Dunphy Contest Director Mike good Contest Director pattern judge should well-run contest Im looking forward 93 event should significantly different past Team Selection finals number contestants will reduced due restrictive entry standards past large number fliers met qualifying standards thing kept number attendees manageable cost entering US FAt program expenses involved attending contest IR ADHO CONTROL Several interesting letters arrived lately would like share parts some first Bill Kite Kingsport Tennessee wrote AMA district ought have Complaint Department lack better name time established district representative Contest Board flier could call something attention pertaining action lack action CD have seen heard events being canceled due lack contestants showing up combining classes last minute some other things rule book forbids way CD could informed error asked better manage contest repeated could steps taken refuse sanctions future contests way things now seems someone runs poorly scoffs rules contestant has no recourse except gripe other fliers boycott future events AEROBATICS ink Bill has good idea dont know Contest Board member correct individual policeman though board members currently involved contest sanctions would either have given authority inform District Contest Coordinator recommend sanction particular contest would have approval chain sanction example could have potential contest CD send sanction request Contest Board member would forward District Contest Coordinator action no black marks against CD sponsoring club Are opinions Editors note AMA Technical Director Bob Underwood notes concerns such expressed Mr Kite investigated AMA Headquarterswhen reported system does exist whereby CDs can placed probation have CD status revoked continued violations standards procedures Another letter Ralph Thomas PO Box 32733 Decatur GA 30034 wrote April 1993 77 Ron Van Puttes 05 Hanno Special-powered LA-i very competitive pattern machine does beginner really need airplane like get started Eclipse has superseded Henry Pioruns new Meridian design still potent force pattern flyingbut does Novice flier really need lot Sportsman fliers think need Chip Hydes Jekyll designs competitive truth dont Chip could win flying Falcon 56 Beginning pattern fliers dont need complexity airplanes like Bill Cunninghams Malibu grow pattern fiying proficiency See text details SIZEUSEPRICE 57X31159 6x21159 63X4395 65X292395 65X372395 65X503395 65X553395 65 X6O3395 65X653395 7x315159 7X415159 7X5159 7X6159 7X7159 7X8159 7X9159 7X10159 78X414395 78X66395 78X76395 8X 735395 8X414179 8X5179 8X6179 8X7179 8X8179 8X9179 8X10179 9X416199 9X516199 9X6199 9X7199 APC PROPELLERS SIZEUSE PRICE 9X8199 9X9199 9X1t199 925 X 50.. 4395 925X525 4395 925 X 55.. 4395 925X575 4395 925 X 60.. 4395 95 X 6SN.. 5395 95 X 7ON .. S 5 95 X 7SN .. S 5 95 X 8ON .. S 5 95 X 85N .. 5 5 9X655395 9X75S395 9X855395 95 X4511229 10X3229 10x4229 10X5229 10X6229 10X7229 10X8229 10X9229 1OX1O229 105X45 11395 11X3249 11X4249 11XS249 11X6249 11X7249 liXO249 Sound Suppression Design High Thrust Efficiency Long Fiber Advanced Composite Material Continually Evolving Design Manufactured Landing Products PO Box 938 Knights Landing CA 98645 SIZEUSE PRICE 11X9249 12X6289 12X7289 12X8289 11X1O7795 liXil7795 11X127795 11X12W7795 11 X137795 11X147795 115X48289 1225 X 3758349 12X97795 12X9W7795 12X107795 12X1OW7795 12X117795 12X11N7795 12X1157795 12X127795 12X1257795 12X12N7795 12X137795 12X13N7795 12X147795 125X97795 125 X1O7795 125X117795 12SX1157795 125X127795 12SX 1257795 125X137795 SIZEUSE PRICE 13X6425 13X7425 13X8425 13X97795 13X107795 13X117795 13X13N9795 13X13SN.9795 1355971295 13551071295 13SX11SN 71295 135X125 101295 1355133 10. 1295 1355135 101295 135 5 14 .. 10 . 1295 135 X 14W 1295 14XSN1295 14561295 14581295 145101295 145121295 14512 N..10.1295 14513101295 14513N101295 14X135 101295 145 135N . 10 . 1295 14X14101295 14514N101295 144 X 105 10. 1295 144512 101295 144513 101295 145 X 14N . 10 . 1295 SIZEUSE PRICE 145 X 145N 10. 1295 1558101295 15510101295 15511101295 15512101295 16581295 16X101295 165121295 165141295 165161295 956PPusher 395 1OX6PPusher 395 1OX7PPusher 395 1058PPusher 395 11 X6P..Pusher 395 11 57P Pusher 395 145 6P .. Pusher 1295 MULTI-BLADE 2 Replaceable Blades 18582200 185102200 18512122200 185142200 18X162200 18X182200 2058122500 20X102500 205122500 20X142500 205162500 205182500 SIZEUSE PRICE 205202500 21 X 122500 22583100 22510133100 22512133100 225143100 22X163100 225183100 225203100 225223100 245103800 245123800 24a143800 24X163800 24X183800 24 5 203800 24 X 223800 2 Blade Huh 19- 10 3000 2 Blade Huh 20- 21 3500 2 Blade Huh 22 . 4000 2 Blade Huh 24 . 6000 MULTI-BLADE 3 Replaceable Blades 17X103300 18X103300 19X113300 20510133700 20512133700 205143700 215103700 215123700 SIZEUSE PRICE 22X104500 225124500 225144500 225164500 24X105500 24X125500 245145500 24X165500 3 Blade Huh 17-19 4500 3 Blude Huh 20-21 5500 3 Blade Hub 226500 3 Blade Huh 249000 CURRENT USAGES 1049 Free Fliulit 2isCombuC 3la-laFylon 425 PylOn 540 Pylon e3UComhuC 7eu PaSern aCL Seunt 9120 Warbird le12llPu5ern 1140 Free Fliuhe 1235CC 137eCC 1421-25 Free FliuSt 1515 Free Fliehe 29 Free Fliehe Contact local hobby dealer first doesnt have what need order direct England Enterprises 916-661-6515 occasionally travel air other cities United States would like able participate pattern contests cities problem ishow take along pattern-size aircraft Escape Summit etc have pay outrageous charges because package too long Apparently weight problem domestic flights maximum size 80 inches totai width h th am sure am person has run problem would appreciate advice could give fact might good subject future column agree However though dont have solution know lot can help Ralph others similar problem about writing can spread word future column Are K-factors okay Theres lot discussion lately about claims Kfactors have improperly awarded lot maneuvers However no seemed have good idea what about situation got letter Sam Turner Land 0 Lakes Florida Sam has some interesting ideas about what Kfactors Excerpts Sams letter follow Ive very concerned ever since penalty flopping stall turn has determined zero brought about strict interpretation 15-degree rule someone decided thrust upon us pattern fliers contention K-factor should equalizer allows differences complexity therefore difficulty penalty inflicted maneuvers Thus complex maneuvers should have higher K-factors simple maneuvers should carry low K-factors way has heen Apparently problem has developed because quality flying has improved point range scores between top fliers has become too compressed contend rather adding new rules new complexity scoring system need correct system already have Lets look what weve done over past few years K-factors themselves Weve added lower classes purpose better differentiation difficulty lower class maneuvers same time weve added complex maneuvers upper classes BUT weve kept same K-factor range five just fit maneuvers existing range think limited range problem existing system maneuver like Figure M Half Rolls lot separate elements four quarter-loops four rolling segments two yaw segments total 10 segments However just flopping stalls now get zero maneuver Consider now Square Loop Half Rolls consists four quarter-loops four half-rolls Both Figure M Half Rolls K 5 maneuvers no element Square Loop will cause its instant total demise thats problem current interpretation 15-degree rule residesit too lethal some maneuvers Heres what think should done fix problem Keep 15-degree rule apply aircraft heading meaning ground track correct K-factors correspond directly complexity individual maneuvers Consider Takeoff Loop Roll essentially single-controlinput maneuvers Give K-factor 1 Give multiples Loop Roll multiple basic Thus Three Inside Loops gets 3 Three Horizontal Rolls gets 3 Add point Outside Loops being outside get 4 complex maneuvers base K number axis inputs required maneuver simple Stall Turn would get pitch pitch ban Eight gets pitch h melmana Turn gets pitch 2 Straight Inverted Flight gets roll rta like now now consider Figure M pitch pitch pitch Model Aviation ODUCING NEW IN PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock R/C engine thread sizes 5 sizes PROP HUBS ranging 1to 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem.help phone call away.See hobby dealer call us direct. Up, TM RU Made ntheUSA PRECISION MODEL PRODUCTS Romco Manufacturing Inc OUALITY ATILITY T LOOKS TY PO Box 836 South Houston Texas 77587 713/943-1867 Figure M w/Rolls pitch roll h yaw h wnward 450 Snap h h alanche h h p Hat h h h h verse Top Hat Hat rted tice maneuvers lot involved get highest K-factors increased weight complexity will penalize total points errors like flopped Stall Turns Now handle turnaround maneuvers Due decreased ability see actual geometry heading errors end maneuvers should worth half K-factors computed above believe system expanding range K-factors will prove make judging consistent increase point spread eliminate instant demise judging confusion now exists Sam has made some very good points K-factors due review revision However personally disagree should use 15-degree rule heading errors think flopped Stall Turn should earn zero fact believe should keep 15-degree rule rolling errors also institute 5-degree rule heading errors can see 50 pitch yaw error maneuvers takes about 150 roll error before can see Comments Regarding Sams claim theres no element Square Loop wIHalf Rolls causes its instant total demise must have watched some flights still trying figure out maneuver can remember several flights strong crosswind Pensacola contest judges really sweating out maneuver Which best Quite few letters have coming way lately would-be new pattern fliers asking what best designs first second airplanes have own opinions someone claimed level pattern experience made difficult understand what new pattern fliers airplane should really dont think Ive lost perspective regarding lower classes however am curious whether opinions out really differ about what good airplanes new pattern flier Let hear theres resemblance consensus Ill publish results missing columns now heres what think cause problem December 92 issue should have included NSRCA Pan-American Championships N-PAC coverage lieu regular column However magazine management decided insert important and/or older special articles N-PAC report slid right calendar Since sent regular column therefore nothing December issue came time January 93 issue same thing happened N-PAC coverage got bumped other special articles Somehow management forgot already January 93 regular column didnt put either So January-intended column finally appeared February issue back regular schedule again Am right t Cover Continued paqe 74 issues cover third featuring painting Benjamin created Desert Storm cover August 1991 Model Aviation Last year March issue cover showed Benjamins rendition air race Gee Bee Model Y Monocoupe battling out pylon What Model Aviation readers may realize Benjamin dedicated model building aviation art Continued page 167 April 1993 79