Radio Control: Soaring

RADIO CONTROL SOARING Im born-and-raised southern California boy nice thing about southern California never gets really cold Cold put long pants go flying killer hatsucking small-child-collecting thermals would take up about 1000 feet toughest decision southern California fliers have make break espresso have actually field Dominos Pizza guy has shown up Modeling life good southern California finally understand rest need building projects keep busy during off-season Last summer began working northern California Mark Allen Allen Development Mark former owner Rite Lite Composites never told cold gets up Ive never situation couldnt fly year-round wearing T shirts shorts does get cold up actually rains Water falling skywhat concept So have decided build project modelthe new world-beater will will take step-by-step through design process airfoil planform choices construction techniques radio installation servo choices way through first flight first speed run will utilize ultimate building techniques newest composite materials know lot saying Great going learn about F3B model true model will designed efficient machine can built using todays bomebuilding technology planform size model should very close optimum contest duration model real alteration would change airfoils suit personal preference An important aspect model name asked girlfriend what thought model should part designer should named such should reflect attitude flying style ego designer. ego said about huge massive maybe astronomical Seeing wasnt going help referred classic movies time Top Gun decided settle Maverick Look Project Maverick future columns Big News Michael Without doubt biggest impact RC soaring today made Michael Selig John Donovan late David Fraser famous windtunnel testing program Princeton University results tests published 1989 Soartech 8 profoundly affected shape direction current sailplane designs greatly enhanced sport new testing program has proposed will implemented University Illinois Urbana-Champaign Heres letter Dear Modeler searching group experienced modelers build variety airfoil wind-tunnel models tests University Illinois Urbana-Champaign UIUC low-speed low-turbulence wind tunnel has instrumented take lift drag measurements airfoils low speeds over Reynolds number range 60K 300K scope airfoil wind-tunnel tests will limited number wind tunnel models provided amount funding received Hopefully proposed modelersupported airfoil test program will become self-sustaining support help kind will acknowledged reports project published Herk Stokely Soartech plan publish results through Soartech frequentlypossibly twice per year similar undertaking substantial support modelers started Michael Selig John Donovan late David Fraser 1987 Princeton University two-year period over sixty various lowspeed airfoils wind-tunnel tested involving over 1200 hours wind tunnel test time results published Soartech 8 1989 new airfoil designs produced tested during program now widely used RC sailplanes As November 1993 over 2200 copies Soartech 8 circulation worldwide Soartech 8 available Soartech Journal Herk Stokely 1504 N Horseshoe Circle Virginia Beach VA 23451 present need new airfoils RC sailplanes example RC hand-launch soaring booming few good airfoils eg E387 5D7037 exist such sailplanes Sailpianes new F3J competition just beginning evolve new airfoils will probably required What will look like past few airfoils eg HQ 15/85 RGl5 5D7003 have favored F3B competition shape handling performance SD7003 quite different other airfoils mentioned significant differences suggest may possible design new airfoils have better overall characteristics F3B competition addition design wind tunnel testing new airfoils several existing airfoils should tested 5D7037 RGl5 quite popular often used flaps flap effectiveness airfoils should quantified through wind tunnel tests results should used design new airfoils also need new airfoils RC sport aerobatic electric models 82 Model Aviation ey Michaelis stretched version Jouster Genie has flat center kicked-up tips Note hinging Genie Wing area 1123 square inches spans 140 inches Wonder hours took Harley Get R/C product source thats tuned needsthe Radio Control Buyers Guide 17th Edition handy reference guide thousands products facet R/C modeling Radio Control Buyers Guide covers R/C hobbies including planes helicopters cars monster trucks boats engines radios field acces sories tools Get R/C guide tailored fit needs Radio Control Buyers Guide 17th Edition FEOR gushed mod65 Dew erltry IevanIes GOmpe trucks years guide custom tailored fit requests finished creations all-color Showcase sections greater number how-to articles Plus new companies expanded line entry level cars competition level trucks make guide R/C reference youve waiting Get R/C guide perfect fitthe Radio Control Buyers Guide #12127$1195 [v32][b-1-10-1-10]] Send ________ copys Radio Control Buyers Guide #121 27gi 195 *Enter total amount form Use coupon mail Kaimbach Publishing Co Dept X0836 21027 Crnssroads Circle PO Boo 986 Wautesha WI 53187-0986 Include postage handling US add $300 4th class $450 UPS continental US Canada add $500 other toreiga add $1000 Wiscunsin residents add 5% sales tao total Canadian orders add 7% GST total Papahie US tends Prices avail ability subject change *Total Enclosed $_________________ Pleas include postage andlixes Name Credit Card # accept American Express 1mm 6151 MasterCard VISA Fopiration Date________________ Phone # __________________ City State Zip Signature X0836 well RC helicopters Often old NACA airfoils used aircraft Compared airfoils could designed today NACA airfoils designed decades ago mostly trial error inferior time NACA airfoils designed little known about complex aerodynamics airfoils operating low Reynolds numbers Airfoils small chords low speeds such model aircraft said operate low Reynolds number flight regime recent years much has learned about low Reynolds number aerodynamics knowledge has successfully applied design new airfoils RC sailplanes ushering new era RC soaring Overall RC sailplane performance has improved dramatically Older airfoils no longer used RC power aircraft performance could likewise dramatically improved through use newly designed specially tailored airfoils Unique airfoil design requirements aiso exist other categories model aircraft example FAI free flight aircraft incorporate both powered launch segment gliding flight operate over wide range speeds past airfoils good performance characteristics have designed FM free flight airfoils should wind tunnel tested quantify performance results gleaned tests could applied design process effort develop new airfoils improved performance Also Society Automotive Engineers SAE sponsors annuai model airplane design competition uaiversity student teams design build fly RC cargo aircraft record cargo weight has carried now stands 23 pounds model 60-sized engine 1200 square inches totai projected area Conceivably record could broken aircraft airfoil airfoils specifically designed competition Clearly need new airfoils data existing airfoils limited just RC sailplanes applies type model aircraft better handling qualities overall performance desired Other topics interest include effects turbulators contour accuracy airfoil blending Are trips simply repairs otherwise bad airfoils can trips integrated airfoil result improvements over say 5D7037 Princeton tests began address issue questions still remain example what best trip height given airfoil Also what best trip geometry should trip located best performance what type airfoils respond best trips Princeton tests also shed some light accurate airfoils must order achieve expected performance systematic effort should made test best airfoils sensitivity contour accuracy also unlikely best performance can obtained single airfoil used along entire wing span Rather airfoils should blended root rip especially true flying wings Companion airfoils blending should designed use popular existing airfoils eg SD 7037 RGl5 May1994 83 Look book local hobby shop call toll free 800-533-6644 24 hours day Please have credit card ready Fax 414-796-0126 Outside US Canada call 414-796-8776 Future Flights new Klingberg Rocket Wing Weighs 145 ounces E engine Span 52 inches expected blended airfoils will wave future effort maximize low Reynolds number airfoil performance model aircraft topics should addressed Overall ULUC test objectives will design wind tunnel test new airfoils category aircraft listed above also examine effects flaps turbulators contour accuracy airfoil blending airfoil performance especially interested testing existing airfoils known have superior performance Wind tunnel data such airfoils will used during design new better airfoils believe have overlooked important area would interested input may consider expanding scope project number airfoil models tested has predefined rather will depend level interest support modeling community wind tunnel models should 33/i inch span 12-inch chord can either built-up foam core insure uniform contour built-up models need fully sheeted foam core models may able supply two t2-inch chord wing templates surface finish can either fiberglass MonoKote however interested effects surface finish will consider w Absolutely Positively Bullet Proct1 Hitec RCD Does Once Again new 8 Channel FM supreme EXs __________are SMALLER lighss 7-eli RICB yet have tighter adjacent channel rejection higher 3OiP rejection & sensitivity tlntroductory Price $7995 New Supreme Series RXs require Y harness utilize 8th channel Tb lImtOOO costommn Ooisr Sapey,a aoataar wIll mcmlv FREE Ootlot-Ponr ball Atotistoly PiUvely3llet-rost —EUTDOFTTAflITLITERALLfl 0 FUTABA P 0 HITEC/JR 0 AIRTRONIC5 L testing models non-smooth surfaces models will attached wind tunnel balance standard model wing rods Standard model construction techniques should provide necessary strength supporting 15-20 pounds lift pinned both ends brass tubing collars models will supplied along fullscale plots and/or coordinates airfoil requested airfoils will lested UIUC open-circuit 3 x 4 foot subsonic wind tunnel turbulence intensity level minimal sufficient ensure good flow integrity low Reynolds numbers experimental appamtus used Princeton will modified ULUC tests Lift drag measurements airfoil will taken Reynolds numbers 60K lOOK 200K 300K some instances may possible take limited data over expanded range 20K- 1000K lift characteristics will determined through force-balance measurements drag will evaluated momentum method through use wake-rake traversed through wake four spanwise locations also interested airfoil pitching moment measurements current apparatus does have such capability interested building wind tunnel models tests please write call fax send e-mail Correspondence calls information should directed graduate student charge project James J Guglielmo Coordinator Dept Aeronautical Astronautical Eng University Illinois Urbana-Champaign 306 Talbot Laboratory 104 S Wright St Urbana IL 6 1801-2935 217 244-0720 fax e-mail jjgug @uxhcsouiucedu program will self-sustaining long funds made available equipment maintenance/upgrades graduate student stipend support tuition fees approximately $16000 per year per student initial goal raise enough money support least two graduate students three year period envisioned small level support large number modeling enthusiasts could sustain airfoil design wind tunnel test program indefinitely impact model aviation could tremendous Contributions can mailed Prof Michael Selig Dept Aeronautical Astronautical Eng University Illinois Urbana-Champaign 306 Talbot Laboratory 1045 Wright St Urbana IL 6 1801-2935 Please make checks payable University Illinois AAE Dept Also please write check SeligWind Tunnel Testing/AAE Uurestriced Funds provide letter stating contribution used Professor Selig 84 Model Aviation 3 157HxO7&Wx 161L 77 in/oz 16 sec Also available 605MGmetal gear 705MG METAL GEAR 20Hx 11Wx23L 160m/oz 27sec 4 group students both undergraduate graduate support airfoil wind tunnel tests Feel free circulate letter others might have interest plans dont know could have circulated information larger group being past two US Soaring teams know generous modeling community can Lets dig deep help fund effort will beneficiaries Another New Design nice things about working within soaring community being privy new trick information Mark Allen designer Falcon 880 subsequent series sailplanes coming out new model new model will called Skyhawk know Mark should winner Skyhawk will span approximately 106 inches will transition S-3021 root modified S-3021 tip Hold hats folks new contest model will obechi sheeting over foam traditional contest models today will built-up construction good news still retain building boards T-pins kit will have fiberglass fuselage standard tail configuration has designed around standard-sized radio equipment wing will consist laser-cut ribs carbon spars withstand punishment some us can put model through Mark says should ideal first aileron-flap high-performance model have seen preliminary drawings fuselage plug Marks new effort absolutely gorgeous projected all-up weight 50 55 ounces model should spot-lander extraordinaire guess dont have tell what model will campaigning contest circuit season want call Ed Slegers International hell set up 201-366-0880 Heres what Harley Michaelis has say about beautiful new model Genie Builders vacuum-bagging may interested knowing Ive done stretched version Jouster composite wing call Genie span 140 inches wing area 1123 square inches fuselage profile same Jouster 6 inches longer behind Th last weighed 74 ounces. under 95-ounce wing loading flat center section six inches long tapers 100 inches 875 inches very light tips bit under three feet triple tapered Turns sharp ailerons mixedin rudder five servos needed Kevlar/glass layup goes directly over core No CF used 1/g inch x VI spruce thickness measured microns thinnest markings available Only actual color transfered model no discernible edge Better paint iron coverings PRY-Ill scale markings matA Federal Standard 595a colors certified independent laboratory DRY-SITs special formulations wont change color put model affrdab1 PRY-SE transfers cost no water transfer or pressure sensitive decals Over 300 different etyles avai able See local dealei 1ETT MODEL ME4RIINGS spar top wing easily handles zoom launches other flight stresses internal flap DAD [direct aileron driver] mechanics preinstalled before bagging end up sealed wing totally clean servo wells preframed balsa avoiding unfinished wells common bagged wings waxed mylar painted before bagging beautiful finish free pinholes have supplemental text sketches materials list build Genie using Jouster plans MA #739 can provide text sketches molded canopy blade set $10 PP Details No water mess stick want Simply position marking rub lightly iron low heat activate adhesive Easily applied solid open structures ffiu& As simple may seem manufacturers dont get right PRYET scale markings meet applicable mil specs and/or standards PRY-SEts proprietary chemistry stands up anything can throw Resists gasoline glow fuels up 50% nitro can use kind clear finishing system 7029 Sanger Avenue Woodwey TX 800 4-DRY-SET FAX817 741-0335 May1994 85 lli No Matter put markings models now. DRY-SIT better adhd URTEF Markings stay put special adhesive sets low heat applied leaving marking permanently attached FOUR 1994 SCALE CATALOGS SPPS 160 Supercale Constzudion Plans$500 SPPS 120000 Doctinentation Photca 3W$500 ASP ModekAiunflComtmdidn Plans$500 ASP Scale Airrraft Drawings 3W$500 Postpaid USNOAN Add $500 Ea Air Overseas 1/5 Sc WINNIE MAE 1002 Pc Wing Plans $4000 pp LOCKHEED VEGA Jim Pepinos SCALE PLANS & PHOTO SERVICE 3209 Madison Ave nsboro NO 27403 VisaMC PHONE/FAX 910 292-5239 -u FEATHER CUT creates new standard ease racy cutting white blue foam wing cores ds offl Precise single wire tracking concert micro-adjustable balance weights guided exclusive three-point tracking system guarantees ripple-free surfaces No trailing edge burn-out common two wire systems Couple FEATHER CUT Tekoas THERMAL GENERATOR fool proof temperature control youll Pro st time out Cuts straight taper wings fins stabilizers matically ts tape edge workbench dining table stores its own heavy duty mailing tube lete kit anodized plated components no hardware store trips ructions include cutting first wing making templates old Bow 40 52 Available Power supply required Guaranteed out perform rest Simply bestl TEKOA THE CENTER OF DESIGN 3219 CANYON LAKE DRIVE HOLLYWOOD 90068 13-469-5584 FAX 21 3-469-30 own cores included can purchased $50 PP Hany Smith 814 Home Walla Walla WA 99362 Tel 509 525-1554 estimate cost other materials used around $150, things just cool Rollin Klingberg has say about new offering Blast off next mission Klingberg Rocket Wing next quality kit offering Future flight Based extremely popular 2 meter Klingberg Wing scaled-down version has 52inch wingspan wing area 377 square inches E-size motor takeoff weight mere 145 ounces can launch over 600 feet Wing also features Autoyaw makes launches easyeven first time out After launch well-known superior aerodynamics Wing will allow climb lightest lift perform aerobatic maneuvers model truly rocket-launched glider opposed some other models simply rockets wings addition because motor attached radio hatch cover Rocket Wing very versatile simple change cover can launched high-start flown slopes powered gas electric motor join exciting new aspect hobby contact Future Flight 1256 Prescott Ave Sunnyvale CA 94089 Tel 408 735-8260 some reason strapping rocket glider appeals child us definitely aspect sport cant wait try Until next time Thermals odel Aviation HER CUT $14950 S & I-I THERMAL GENERATOR Power Supply $11950 S&H HANDS ON PRO-BOW THIS UNIQUE DEVICE ALLOWS YOU TO CUT ACCU RATE WING CORES WITHOUT EXPENSIVE AND COMPLICATED EQUIPMENT WITH THE PRO-BOW THE CUTTING WIRE IS GUIDED DIRECTLY AT THE TEMPLATES BY HAND HELD INSULATOR CLIPS THE HEAVY-DUTY CONSTRUCTION GIVES GOOD FEEL TO THE BOW AND WITH THE ADJUSTABLE HEAT PROBE THE WIRE TEMPERATURE CAN BE CONTROLLED FOR PERFECT CUTTING RESULTS sale $4295 WORKS DIRECTLY OFF OF 12 VOLT BATTERY OR 10 AMP BATTERY CHARGER S COMPLETELY ASSEMBLED STRAIGHT OR TAPERED CORES IAL PASSIVE RESISTANCE CUTTING WIRE LATED STEEL FRAME CUTTING TECHNIQUES S OPERATING INSTRUCTIONS INCLUDED UP TO 41 SEND $500 FOR SB PAGE CATALOG VISA & MASTER CARD ACCEP TEDADD $500 SHIPPING IN USAIL RESIDENTS ADD 7% TAX WING MFG 306 E SIMMONS GALESBURG IL 61401 CALL 309-342-3009