Control Line Navy Carrier Dick Perry EXCEPT casual mention time time has 10 years since Ive taken time column discuss wing flaps great detail Since readers have no doubt changed over years because style flying rather different now decade ago seems good time bring up subject again original Carrier rules very much favored high speed over low speed scoring equa tions models thatpredominated underthose rules tended small Class models 125140 sq wing area Class II models 200-230 sq Profile models very close 300 sq minimum common Low speeds flown near-level attitude wing providing lift opposed present nosehigh prop-hanging has become popular recent years Wing flaps now added weight complexity Although use contributed improvements low speed did provide significant scoring advantage especially offset slight degradation high speed however Class Class II models used flaps long prototype equipped primary reasons using improved low-speed handling because drag added allowed engines idle higher reliable speed slower speeds possible flaps also made landings easier Profile models lighter weights larger wings RC engines idled slowly reliably did need flaps same reasons Class II models needed use Profile models largely matter personal preference though achieving last margin performance generally dictated use Carlos Aloises Condor Harry Higleys Carrier Pigeon flapped designs capable 15 mph low speeds level flight carried masters winners circle times change scoring gave em phasis low speed tended favor flapped airplanes larger models prevalent designs being produced today however show trend away flaps Prop-hanging lowspeed flight does benefit flaps same degree level-attitude low-speed flying did builders opting reduced weight drag complexity As past however edge overall performance seems favor flapped model slightly better low-speed performance dem onstrated flapped models prop-hanging flight probably result additional lift drag produced portion wing prop blast building model flaps modeler has two basic options can connect flaps tail hook pushrods horns flaps lowered hook falls can actuate flaps spring tension using latch mechanism some kind hold flaps up high-speed flight former method illustrated photos accompany months column latter method used Profile Kingfisher appeared construction article April 1984 issue Model Aviation photos used September 1986 Carrier column discussion tail hooks have used both methods pushrod method Continued page 172 flaps Garys model actuated tail hook retained fuselage RC nose wheel steering arms Pushrods adjustable links connectthe armawith hornsontheflaps Total flapdeflection Isadjustable isthe retracted position flapacan set differential deflection desired photo left note small coil spring pulls tail hook down February 1987 65 Vought Kingfisher MA plan No437 built byGary Hull Power K&B 58cc glow engine model features movable lead-out guide flaps aileron rudder fixed aileron held position flat plate during high-speed flight flap lowered low speed plate rotates releases aileron deflected rubberband installation light simple produces little extra drag Say0 old T G5i tOG WO tt6 St Stlr5 W16 this. spa PtugSto Over 600 items Send $200 current catalog RUBBER POWERED FLYING MODELS KITS S SSORIES KITh TISSUE LUBE PROPELLERS SHAFTSBEARINGSWHEELS LARGE CATALOG OF QUALITY SUPPUES KITS AND PLANS FOR RUBBER POWERED MODELS ALSO CO-2 ENGINES BLIMPS ELECTRIC AND MORE FULL CATALOG $290 NEW NO 619 448-1818 Peck-Peymers BOX 2498 -MA LA MESA CA 92O41 Ideal Power Pack Connector electilo planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure rson Power Products Inc 1/ U F,eNoEO6226cg FIe NO LR25154 -* SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum order $ 000 Three packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer Inquiries Invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 confused Teach Copies program should available AMA HQ 525-inch single-sided MSDOS disks nine-sector format via E-Mail should able put disk make whatever small changes necessary suit particular computer proceed become educator George M Myers 70 Froehlich Farm Rd Hicks yule NY 11801 CL Navy Carrier/Perry Continued page 65 offers potential adjusting flap deflection suit individual flying style contest condi tions also weighs produces drag exposed installations such com mon Profile models disadvantages slight however probably outweighed advantages considering total perform ance adaptability different flying condi tions Flaps function changing camber wing part cause wing produce higher lift coefficient given angle attack also produce negative pitching moment causes nose pitch down As flaps deflected drag increases airflow around tail affected factors combine different ways alrplane general tendency toward ballooning floating Car rier models particularly Profiles model may require some Down elevator speeds increase above stall Higher speeds may also require attitudes nosedown normal level-flight attitude cause facts ballooning tends caused pilots reluctance apply Down elevator normal lower nose below normal attitude effect enhanced fact wind produces much larger relative changes airspeed model moves around circle low speed flight Compensating changes requires much greater change angle attack higher speeds effects described above will vary flap deflection greatest effect occurring first 30% flap deflection models Adjustable flap deflection can useful trim ming model varying flight conditions Less flap deflection will generally improve handling windy conditions Some modelers like use differential flap deflection produce rolling tendency away center circle Increases deflec tion beyond about 30% produce drag other effects increased relatively little comparison effect pronounced therefore lesser flap settings greater flap deflections outward-rolling effect may balanced increase drag inboard wing will try move nose toward center circle key adequate rolling effect use differential flap settings lesser flap deflec tions use separate aileron outboard wing has very large upward deflection better balance drag inboard outboard wings Aileron movement can accomplished springs rubberbands connecting horns flap aileron reversing bellcrank wing method prefer produces less drag weighs less hom-and-bellcrank method release mechanism holds aileron place high-speed flight consists piece sheet brass soldered piece tubing tubing rotates around wire imbedded trailing edge wing hinge line see photo As flap moves down brass sheet allowed rotate thereby releasingthe aileron Richard L Perry 10035 Deadwood Ave Ellsworr/z AEB SD 57706 Pattern Plane/Hampson Continued page 68 plane start engine run out handle plane will rise off ground prefer simple hand launch toss outside flying circle keeping lines tight takes FF Old-Timers/Haught Continued page 69 version building chores good pair skis can fabricated fairly short order Skis dont require trim adjustments floats permit conventional chase systems per sonally find model engines bit cantankerous cold weather leave winter fun up friends enjoy getting out winter ski flying can provide incentive other fun-type activities can added sport contest flying given ingenuity Free Flighters Im sure can thought up Most other model ing interests have mass172 Model Aviation Connectors Designed anything electrical requiring quick disconnects
Edition: Model Aviation - 1987/02
Page Numbers: 65, 172
Control Line Navy Carrier Dick Perry EXCEPT casual mention time time has 10 years since Ive taken time column discuss wing flaps great detail Since readers have no doubt changed over years because style flying rather different now decade ago seems good time bring up subject again original Carrier rules very much favored high speed over low speed scoring equa tions models thatpredominated underthose rules tended small Class models 125140 sq wing area Class II models 200-230 sq Profile models very close 300 sq minimum common Low speeds flown near-level attitude wing providing lift opposed present nosehigh prop-hanging has become popular recent years Wing flaps now added weight complexity Although use contributed improvements low speed did provide significant scoring advantage especially offset slight degradation high speed however Class Class II models used flaps long prototype equipped primary reasons using improved low-speed handling because drag added allowed engines idle higher reliable speed slower speeds possible flaps also made landings easier Profile models lighter weights larger wings RC engines idled slowly reliably did need flaps same reasons Class II models needed use Profile models largely matter personal preference though achieving last margin performance generally dictated use Carlos Aloises Condor Harry Higleys Carrier Pigeon flapped designs capable 15 mph low speeds level flight carried masters winners circle times change scoring gave em phasis low speed tended favor flapped airplanes larger models prevalent designs being produced today however show trend away flaps Prop-hanging lowspeed flight does benefit flaps same degree level-attitude low-speed flying did builders opting reduced weight drag complexity As past however edge overall performance seems favor flapped model slightly better low-speed performance dem onstrated flapped models prop-hanging flight probably result additional lift drag produced portion wing prop blast building model flaps modeler has two basic options can connect flaps tail hook pushrods horns flaps lowered hook falls can actuate flaps spring tension using latch mechanism some kind hold flaps up high-speed flight former method illustrated photos accompany months column latter method used Profile Kingfisher appeared construction article April 1984 issue Model Aviation photos used September 1986 Carrier column discussion tail hooks have used both methods pushrod method Continued page 172 flaps Garys model actuated tail hook retained fuselage RC nose wheel steering arms Pushrods adjustable links connectthe armawith hornsontheflaps Total flapdeflection Isadjustable isthe retracted position flapacan set differential deflection desired photo left note small coil spring pulls tail hook down February 1987 65 Vought Kingfisher MA plan No437 built byGary Hull Power K&B 58cc glow engine model features movable lead-out guide flaps aileron rudder fixed aileron held position flat plate during high-speed flight flap lowered low speed plate rotates releases aileron deflected rubberband installation light simple produces little extra drag Say0 old T G5i tOG WO tt6 St Stlr5 W16 this. spa PtugSto Over 600 items Send $200 current catalog RUBBER POWERED FLYING MODELS KITS S SSORIES KITh TISSUE LUBE PROPELLERS SHAFTSBEARINGSWHEELS LARGE CATALOG OF QUALITY SUPPUES KITS AND PLANS FOR RUBBER POWERED MODELS ALSO CO-2 ENGINES BLIMPS ELECTRIC AND MORE FULL CATALOG $290 NEW NO 619 448-1818 Peck-Peymers BOX 2498 -MA LA MESA CA 92O41 Ideal Power Pack Connector electilo planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure rson Power Products Inc 1/ U F,eNoEO6226cg FIe NO LR25154 -* SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum order $ 000 Three packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer Inquiries Invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 confused Teach Copies program should available AMA HQ 525-inch single-sided MSDOS disks nine-sector format via E-Mail should able put disk make whatever small changes necessary suit particular computer proceed become educator George M Myers 70 Froehlich Farm Rd Hicks yule NY 11801 CL Navy Carrier/Perry Continued page 65 offers potential adjusting flap deflection suit individual flying style contest condi tions also weighs produces drag exposed installations such com mon Profile models disadvantages slight however probably outweighed advantages considering total perform ance adaptability different flying condi tions Flaps function changing camber wing part cause wing produce higher lift coefficient given angle attack also produce negative pitching moment causes nose pitch down As flaps deflected drag increases airflow around tail affected factors combine different ways alrplane general tendency toward ballooning floating Car rier models particularly Profiles model may require some Down elevator speeds increase above stall Higher speeds may also require attitudes nosedown normal level-flight attitude cause facts ballooning tends caused pilots reluctance apply Down elevator normal lower nose below normal attitude effect enhanced fact wind produces much larger relative changes airspeed model moves around circle low speed flight Compensating changes requires much greater change angle attack higher speeds effects described above will vary flap deflection greatest effect occurring first 30% flap deflection models Adjustable flap deflection can useful trim ming model varying flight conditions Less flap deflection will generally improve handling windy conditions Some modelers like use differential flap deflection produce rolling tendency away center circle Increases deflec tion beyond about 30% produce drag other effects increased relatively little comparison effect pronounced therefore lesser flap settings greater flap deflections outward-rolling effect may balanced increase drag inboard wing will try move nose toward center circle key adequate rolling effect use differential flap settings lesser flap deflec tions use separate aileron outboard wing has very large upward deflection better balance drag inboard outboard wings Aileron movement can accomplished springs rubberbands connecting horns flap aileron reversing bellcrank wing method prefer produces less drag weighs less hom-and-bellcrank method release mechanism holds aileron place high-speed flight consists piece sheet brass soldered piece tubing tubing rotates around wire imbedded trailing edge wing hinge line see photo As flap moves down brass sheet allowed rotate thereby releasingthe aileron Richard L Perry 10035 Deadwood Ave Ellsworr/z AEB SD 57706 Pattern Plane/Hampson Continued page 68 plane start engine run out handle plane will rise off ground prefer simple hand launch toss outside flying circle keeping lines tight takes FF Old-Timers/Haught Continued page 69 version building chores good pair skis can fabricated fairly short order Skis dont require trim adjustments floats permit conventional chase systems per sonally find model engines bit cantankerous cold weather leave winter fun up friends enjoy getting out winter ski flying can provide incentive other fun-type activities can added sport contest flying given ingenuity Free Flighters Im sure can thought up Most other model ing interests have mass172 Model Aviation Connectors Designed anything electrical requiring quick disconnects