Radio Control: Soaring

RADIO CONTROL SOARING DARYL PERKINS INTERVIEW met Daryl Perkins 1992 AMA Nationals Westover AFB Massachusetts mighty impressed skill ability United States F3B team won World Soaring Championships Brasov Romania July 1995 Daryl outfiew outscored others making him demonstrably best RC Soaring pilot world interview wanted ask questions would provide practical information help rest us fly RC sailplanes better Q What sailplane did fly World Championships did select airplane A I flew V-Ultra manufactured Germany Hiner Fischer guy true craftsman characteristics look sailplaneespecially F3B modelare launch performance strength airfoil integrity cleanliness design F3Bs nowadays close flight performance its important pick model will outlaunch anything else contest thats scored man-on-man having altitude energy over everybody huge advantage An F3B has strong dont care what engineers say Wing flex costs energy Flex launch flex turns slows down figure can break air its strong enough V-Ultra probably strongest airplane ever built might little heavy thats huge disadvantage F3B no question about airfoil integrity model mold work phenomenal As far maintaining energy thing smokes able fly Speed much lighter previous designs still able break World Champs Speed record Dennis Duchesne 1993 World Champion Belgium broke again couple days later Its funny happened Israel too being interviewed Israeli TV having just broken record camera background Nic Wright demolishing brand-new Speed record couldnt believe guess Im supposed keep Q What features would like see next generation F3Bs A The problem launch altitude important thinner faster sections dont seem launch well So seems kind backtracking airfoilwise RGl5 awfully hard beat because its fastest section out because combines elements well launch duration speed thats really what F3B about combining disciplines What need section thats real fast wont give anything up launch Work would Michael [Selig] Q What sailplane fly Thermal Duration competition did select model A I am currently flying own design Maverick duration contests May wasnt designed floatiest airplane out designed 86 Model Aviation hs AC Soaring column features interview current World Champion Daryl Perkins Santa Rosa California Daryl Perkins V-Ultra during Australian Jerilderee competition photos Andrew McDonald Former world champion Nic Wright launches current world champion Daryl Perkins Australian Jerilderee competition April 1996 Daryl Perkins makes catch DJ Aerotech Monarch C launch higher have great cruise reason simple have never made time contest because couldnt work thermal once got itbut because couldnt get thermal Maverick gets thermal its also lot fun coming back Smokin Q Have hints tips sailplane selection rest us A Sailplane selection very personal airplanes market have strengths weaknesses have own little niche theyre very good Try get caught up media hype won last contest what type airplane guys win can typically win flying manhole cover Its important pick plane particular skill level same time will push abilities somewhat stayed content flying Sig Riser first started out would have never developed skills win Worlds always pushed myself Q What sailplane setup methods techniques work A How determine final CU [center gravity] Basically cant physically fly CUs far back need maximum efficiency using far back can handle rule just keep moving CU back until airplane unmanageable put e nose call good longer fly particular design farther aft can move CU Now lot happens continually move CUs back need keep retrimming models fullflying stab isnt problem articulated stabs need reshim stabs lot people move CG back say Look its stalling over sky Well guys thats what trim levers trim sailplanes typically trim max L/D like airplane cruise efficiently effortlessly dont like push Joe Wurts other hand trims minimum sink personalpreference kind thing see Joes always lift thumb gets tired pulling back stick time Q Launching cited contributing success US team 1995 World Soaring Championships What did team differently other teams A Here California launch altitude treated very important thing rest States seem content just get airplane air get serious Altitude key everything RC Soaringfrom Handlaunch F3J Duration F3B trim decals shown Signature Series kit includes certificate authenticity handsigned Great Planes President Founder Don Anderson location dealer nearest please call 1-800-682-8948 Ask code #041 OF spyright 19963072210 Ever since its 1988 debut Super Sportster 90/120 has dazzling R/C fliers incredibly realistic point rolls knife edges snaps spins huge out-of-sight victory rolls Now collectors well performancehungry pilots Great Planes presents Signature Series Super Sportster 90/120 special edition classic kitto produced very limited nuantityincludes sizzling new trim decals ulus certificate authenticity. personally Great Planes President rounder Don Anderson Dont miss chance own Signature Series Super Sportster 90/120 See Great Planes dealer today Wingspan 72 Wing Area 950 sq Weight 95-11 lb Wing Loading 23-27 ozlsq tt Length 60 Requires 2stroke 61-90 4-stroke 91-120 engine & 4channel radio *QrAifEA MODEl VA Distributed Exclusively Through GREAT PLANES MODEL DISTRIBUTORS COMPANY P0 Box 9021 champaign IL 61826-9021 November 1996 87 Daryl Perkins launches V-Ultra another day Jerilderee competition won World Champs design Special collectors edition Lets assume pretty lousy LID 15/1 just make numbers easy Now Joe outlaunches 20 feet means can travel 300 feet before altitude Thats football field has traveled search thermal before has come down same height Are starting see guys get 50-75 extra feet tow typically win contests wanted understand importance launch launch setup models launch setup very aggressive airplanes rotate instantly out hand appear go vertical accomplished several ways towhook position launch camber elevator preset First towbook position Typically place hook winch ring just ahead CGmaybe Ae inch what creates instant rotation Second launch camber Camber what airfoil create lift typically will run estimated 1725O fullspan camber launch depending airfoil Again fly airplane optimize airplane separately basically what am looking model will pull hard possible tipstalling play camber until arrive proper setup Q Whats biggest launching mistake sailplane pilots make can avoided A Very aggressive flap settings very little aileron droop launch want pull high CL coefficient lift possible need make whole wing work want wing work harder use full-span camber know sounds nuts has tendency stabilize model need learn use rudder tow ailerons become less effective droop Q Please say little about reading air finding lift A The important thing determine prevailing wind direction isnt something instantly have spend sometime feeling direction dont want get fooled thermal drift truly establishing wind direction able feel changes air around us Once have established wind direction can feel wind shifts reliably air around us best sign thermals must fed will suck pull air around slightest shifts can show basic location thermal Q What air signs usefulreliable finding lift A Big white puffy clouds good thing Rising trash bags rodents small childrenpay attention everything going up Just alert aware just got back Australia field flying little wispy things never seen before climbing happy Q What find lift ground air signs fail A Very important Read airplane will tell its lift lift cracks up people panic get sink normal thought process usually Oh no Im sink Twenty seconds later Oh no Im still sink think Ill turn around fly through same air just went through Big mistake love sink means Im close thermal experience pays off need read model determine location thermal easiest thing read model yaw cant read knowing actual wind direction sailplane will have tendency yaw direction thermal think people have tendency airplane yaws right let model continue its heading left Ive flown around thermals way back end model moves right roll right slightly see KITS ARE QUICK 5 EASY TO ASSEMBLE Foam sheeted wings & fuselage sheeting fiberglass cowling & hardware included See Model Price 85 Super Corsair 95 88 Hawker Seat ury 95 90 P47-D Thunderbolt. $34995 90 P47-B Razorback 95 82 P510 Mustang 95 85 Fairchild PT-19 95 85 F4U Corsair 95 65 F2G Corsan 95 Thomoson Troohv Racers 60 GeeBee Model Z 95 80 Keth Riben R-4 95 83 Laird Turner 95 70 Laird Super Solution. $39995 85 Gee Bee Model Y 95 lPlus 52495 Shipping & Handling kilsi Foam Bond Contact Cement qtsl $20 00 GIANT SCALE KITS through December get ready low prices too* THE SINGLES FA-SO FA-65 FA-BO FA-91S FA-1 20S FA-1 50 THE GOLDEN KNIGHTS FA-5OGK FA-65GK FA-8OGK FA-91SGK FA-1 2OSGK FA-1 SOGK THE TWINS FA-60T FA-1 OOT FA-1 3OTD FA-1 82TD FA-300TL FA-300TTDP THE RADIALS FA-325R5D FA-450R3D $18495 $19495 $21495 $22495 $33995 $35495 $19995 $21995 $23995 $24995 $37495 $38495 $59495 $50995 $59495 $68995 $84995 $94995 $144995 $109995 participating Certified Sado dealers nationwide Offer good through December 311996 THE 4-STROKE COMPANY November1996 89 Catalog Ii also avaIlable 5 uu n apply vIdeo cost purchase 01 kit HOBBY_ TECHNOLOGIES 322 E St 56 rn WA 98002 939 0884 90DAY PARTS REPLACEMENT GUARANTEE ne-s%jeo i3~ 8aO z tugiproot rlstep sail panel highly visible fluorescent color combos Fiberglas parts~ channel aerohatics Computer generated assembly manual CAD-drawn three-view \f 17 WINDWARD IMIJTROL perspective diagrams Span 70 Length 34 Weight 35 lb RTF Wing area 670 sq Wing loading 135 oz/sq ft Radio 3 channels Engine 25 40 2OF Hudson Harbour Dr Poughkeepsie NY 12601 E-mail RCWindward1aoIcom TUF-1 KitOnly $13995 Shipping & Handling$495 Demo videos$925 FREE BROCHURES information iflhAl 485924924 order credit card CALL OI hours Hardware included NY state renidents add 7 250/o http//homeaoIcom/RCWindwnrd OR http I/members nnn corn/win ardrc/RcWINOWA HTM just fly right good takes some practice airplanes react differently knowing model imperative Q How decide leave decaying thermal look elsewhere lift A Most time think misplace thermals instead having actually decay realize thermals go away get squashed above constantly recore number things can happen what am saying time screw up just lose thermal point fly big exploratory circle hunt back down cant find just go cruise Q What strategy tactics can offer club-contest flier A Practice practice practice Make flight count during fun-fly sessions youll better contest situations contest starts practice field gain confidence well contests go fun-flying almost flight longer ten minutes allows believe/know Ill make times contest Q Is anything else youd like say Model Aviation readers A Id like take opportunity thank Ive very fortunate have such tremendous success doing what love has due support family friends sponsors such Airtronics Futaba individuals such Joe Wurts Phil Lontz Edward Grainger mostly its support guys Youre ones purchasing T-shirts pins patches keep American teams top Thanks keeping dream alive Keep flyingtheres cant become World Champion just have want bad enough Thank BEST IN SCALE NEW PHILIP KENT PLANS Philip Kent has written scale column British magazines years has good scale plans published both British American magazines Philip has decided start plan service own Philips plans available USA Bob Holman Plans Plans printed US reasonably priced Plans have built test flown before offered sale also Tipsy Jr 70 Mile Sparrowbawle 84 1/4 scale ASK AaoUT LASER CUT PARTS CATALOGS Theaesun5cale$400 ASP Aircraft$500 ASP Scale Drawings$500 RCMW Plans catalog5500 VrH Gema catalogS8OO PLEASE AD S2OOPP Call information credit card orders 909 885 3959 fax 889 9307 BOB HOLMAN PLANS POBOX 741 SAN BERNARDINO CA 92402 90 Model Aviation y 12 LS Long atrolce Bully 12 PR Prescion Race CALL NOW ON OUR 800 LINEBully 1 2 PR Price $298 Bully 1215 e $398 Both Power Machines Stock Bully 12 LSBully 12 PR Th Bully 1215 Haa thruat compared againat Bully 12 PR haa thrust compared agalnat newest major four stroke usIng 158035 percent WEBRA Speed aix dIfferent propellers nitro fuel cases Bully out performed 14X10 16X12 cases Bully out other engine 58020 Percent thrust did ft performed WEBRA 5 18 percent best 16X14 18X16 APC Propeller thrust 16X8 IOXIO APC propeller Bully 12 IS designed high torque lowThe Bully 12 PR full race engine flyers RPM wIth propellers up 8018 inch two strokewho want fastest foeward speed special isa low maintenance high performance engine wIthaIrcraft two stroke also low maintenance dual plug reliability bulit pump regulator high performance engine dual plug reliability built pump regulator Bully 12 IS isa rear exhaust engine available accessories header tuned pipe mufflerAccessorIes 4 muffler types soft mount BULLY engines lImitedUAV Inc800 294 9506Z production may ordered8OOAM-6OOPM Mon-Sat direct UAV Inc~ArA2tm5vamw cific lime PO BOX 1548 OREGON 97709 E 541-382-5409 FAX 541-335-0117 AERONCA C-I 88 SPAN 1/4 SCALE PLANS S2500 POSTAGE up lnunder6O uucundsl No ropes ssemblyl 131 RAVENWOOD RD VERSAILLES KY 40383