RADIO CONTROL SOARING indeed fortunate month have two interesting items Joe Wurts Valencia California undoubtedly know won 1991 F3B World Championships Holland First Joe tells about flying demonstration put local elementary school Second explains very instructive article reads air before during flight As far PR concerned glider show put kids probably very best thing club can enhance its image community Children nature thrilled magic Whats magical glider flying around seemingly itself especially controlled world champ Joes letter photos taken Canyon Springs Elementary School Santa Clarita California home flying club Santa Clarita Soaring Association SCSA put together flying static demonstration kids brought out Thermal Eagle F3B Eagle get morning off work explained away boss saying going expose kids aviation would help making future aeronautical engineers funny part will probably end up next generation model fliers knows might next Frank Zaic Walt Good club members event though Friday lots airplanes display kids check out along some kits could show built kids tended like slope ships fanciful finishes cant tell asked didnt fly little sloper looked like shark lot fun flying both Thermal Eagle F3B Eagle kind bracketed slow fast ends flying right safety set winches up way over end field launching meant fast run get over kids could talk flying completely enthralled kids being kids wanted see bit extra finally acceded flying Thermal Eagle underneath soccer goal post photos taken couple different members SCSA wish taken some pictures members talking children static display What took makes look like one-man show definitely Bill Centonze person put together John Snyder also took part flying As can see students lined up edge field would set up landing approach final right front could get upclose look plane air would either catch land feet photo looks like am looking down plane sitting actually shot plane just touch down way can tell little gap under tail absolute rapt attention little boy tank top front row club very thrilled suc cess doing demonstration didnt take much time effort repaid times over goodwill well future modelers may have generated As beginners soon discover after learn steer glider wantmore lessthe big challenge keeping blasted thing up quickiy becomes obvious need fly around nice up-going air lift avoid nasty down-going stuff sink Obvious yes Easy no beauties RC soaring can spend lifetime learning about reading what air doing really requires experience practice study concentration observation sometimes work good way leam air-reading skills stand next expert have him explain what hes doing flies sailplane around sky fly glider can coach fly way turn big make circles after youve become fairly experienced its still important study everything written really top guys kind material scarce though Thats feel privileged able print following piece amazing reader air Ive seen Read Air Joe Wurts biggest advantages competitor can have understanding awareness changing air around him no better feeling stepping up winch knowing lift sink field Nobody Ive seen yet can read air 100% time think can learn get better 80% accuracy practice good judgment Left During demonstration excited Santa Clarita students watch Joe prepares catch Thermal Eagle September 1993 75 Joe Wurts took Thermal Eagle Santa Clarita CA elementary school perform flight demonstrations children Top center Joe explains transmitter controls youngsters girl interprets hearing-impaired students Joe lands Thermal Eagle right feet Note rapt attention young fellow sitting just behind him Interested Soaring Electric Flight Great So Are Northeast Sailplane Products carry comprehensive line silent flight prod ucts industry sell RIO Sail planes Electrics related accessories reference features hundreds products doz ens informative articles technical infor mation great sport RIO silent flight can meet needs abilities beginner expert dedicated pro viding personal customer service Check out NSP..youll glad did Welcome world NSP first open unique reference will awe number quality products have Also ordering us easy fun because help step way order reference mail $700 $5 plus $2 s&h NSP Well ship reference via express mail arent completely satisfied simply send back prompt courteous refund Northeast Sailplane Products 16 Kirby Lane Williston Vermont 05495 Sailplane Products 1993 RC Soaring Electric Reference Northeast N N N Price $5 Northeast Sailplane Products Irby Lane Williston VT 05495 comprehensive reference Radio Control Soaring Electric Flight get quick primer what look locating thermals through ground signs picture perfect thermal beautiful column air centered flying field no wind blow away course air upper part column fed air lower part what feeding lower part thermal can visualize thinking thermal near ground big vacuum cleaner thermal sucks air its surroundings ground level air flowing towards thermal direction Similarly patch sink down-coming colder air air ground flows away kind like people running away tall stories case perfect thermal flags around field would pointing towards thermal away sink Now add some wind situation facing upwind thermal upwind would feel lull thermal sucks some air towards Remember hotshot competitor sandbagged winches waiting launch wind during lull Well hes going need zoom can get because will launching right sink following thermal Continued page 90 Right Leon Kincaid hoiding newest poiyhedral version Heat Seeker Air Force Academy coiorado Springs Straight-wing aileron original ground 76 Model Aviation e Leon Kincaids original latest version Heat Seeker arranged comparison workmanship beautiful models absolutely incredible 3 order call Eric Sanders @ 513-299-7684 Spm-IOpmEST Monday-Friday day Sat Sun State Artis Program CAD airfoil editor-rnv ,~ading edges undo mode 64x zoom pan mode coordinate ID mode shows current cursor position etc S Easy use windowing interface Pop up teat editor document airfoil changes-saved coordinates ulates elliptical planform rib lengths Chord queue allows templates several chord lengths printed out unattended edit coordinates Pop-up calculator conversions s foam outline screen optimize template height Customizable screen colors are airfoils screen printer using overlay mode ts mirror image Calculates panel volume & sarface area aide weight estimations Supports dot matrix laser jet printers Calculates projected panel area airfoil cross sectional area perimeter length tive negative washout Modify airfoils changing camber thicknessmirroring combining tops bottoms different airfoils Interpolates between different root tip airfoils position within wing panel uts DXF file aorh scaled unscaled hi-rev screen preview modes her\Cut ItmI calculator much much morel. Remember wine accurate templates ComptiFoil Professional-$65 Airfoil Library w/135 airfoils-SlO S&H add $3 Also available-CompuFoil Standard-$25 CompuFoil Plus-$45 Demo Disk-SS refundable order o vafte compatabjilty product oidedng mionnation TMe 0. Kettenng OH. 46429 I79t 111 1 FX6OIOf/65c/e4sIitJk RC SoaringlBlakeslee Continued page 76 caused lull think kind fitting punishment can generalize saying temporary shifts wind direction speed point either toward lift away sink Either way want fly toward downwind direction wind shift Remember means wind slows down lull thermal upwind relative wind shift against wind After learn observe trees grass other things read what wind shifts doing around flying field see trees upwind edge field getting hit gust wind probably means thermal downwind trees especially feel lull wind Similarly suddenly feel wind shift straight face left probably lift somewhere right have locate Once sensitized signs ground can start taking air read same signs via airplane Take simple case glider flying straight away straight upwind pass right thermal will likely notice yawing action glider showing drift right left means should turn left once again towards downwind shift go thermal clues can sometimes quite subtle once have found myself chasing phantom thermals over field misreading plane times have turned short flight long enjoyable just getting idea way turn Over last few years have occasion fly various sites around country well abroad have noticed yes people say thermals home field different correct what have also seen single location thermal conditions can vary quite bit southern California frequently see representative conditions similar over USA single month makes area good breeding ground competitive pilots airplanes will well broad variety flying conditions opposed point design planes appear some sections country evidently get much variation flying conditions warm humid conditions predominate Midwest East typically produce thermals quite diffuse near ground Thermals dry arid climate strong near ground because mechanism warming air bit different case turns out water vapor good absorber infrared radiation heat Continued page 130 90 Model Aviation Original ff~Ldiinch2r WroI Lh VmuIon AhoAvI Call Today Dealer Inquiries Welcome L riiaii IOU IUl OVER 2000 TOOLS & ACCESSORIES Brand Names'-Unusual Items. Exclusive Producls savings up 60% designed 10 make project easier enjoyable professional I I I L STATE__ZIPJ TO ORDER Send $100 coupon name address tn&nnnnrtrt MlcroMark 1434 Snyder Ave Berkeley Heights NJ 07922-1595 325-93 SYLVAN AVE MOUNTAIN VIEW CALIF 94041-1640 RO SoaringlBlakeslee Continued page 90 So hot humid case gives high value absolute humidity should compare absolute rather relative humidity way air gets warmed up caused ground getting warm reradiating heat back air can warm up air quite ways ground dry arid case ends up warming air primarily direct contact ground gives thermals strong start ground humid air thermals can just strong dry ones its just strong part much higher means practical terms humid thermals much difficult read fly near ground Ill define winch-launch height lower also fickle near ground frequently no solid core center humid conditions concept thermal-producing locations has lot validity thermals will constantly form over areas radiate well IR spectrum have detected shift relative wind pointing towards thermal next question find out far away turns out thermal spacing diameter influenced humidity also height inversion layer time desert-type conditions thermal spacing can order miles Thermals can upwards half mile across altitude five six miles between makes RC cross-country flying desert quite challenging times climb high can hope hit next thermal before hit ground have conditions like wind shifts limited use because might marking thermal mile away flying fields lift much smaller thermals coming userfriendly sizes can get feel phenomenon just studying carefully evolution thermals during cycle day Ever notice smoke chimney valley morning morning reasonably calm day air near ground quite cool compared air hundred feet up means inversion layer near ground first thermals morning can sometimes go up 50 100 feet size thermals correspondingly quite small As morning warms up inversion layer slowly climbs thermals eat inversion As inversion climbs thermal size spacing slowly increase good way see happening go out early hand-launch glider get some exercise first thermals will take plane up little bitand have times early morning launch off winch glide around until get down thermals some point air near ground gets what full-scale pilots refer trigger temperaturethe temperature inversion near ground disappearsat point large thermals start happening word caution about low thermals frequently will flying near top will mean earlier stuff about drift telling thermal will work advertised Actually near top thermal signs reverse Think top thermal smoke hitting ceiling spreads out So top thermal constantly push ing out really makes hard stay top thermal Getting frustrated flying early morning thermals can drive taking up power planes Seriously enjoy challenge especially knowing will last little best way learn signs quickiy flying hand-launch gliderthe feedback immediate dont read right have throw again Good luck sharpening air-reading skills Thanks great article Joe Now readers have go out practice what Joe saysand too could world champion thing Joe didnt men tion Ive noticed Joe likes fly barefoot Ive suspected feels minute air temperature changes through toesor something like Well have ask Joe write followup article subject Another beauties RC soaring flight unique Therefore practice andfiin flying dont tend get boring holds true whether youre flying little hand launcher beginners glider exotic full-house ship practice flying diversion enjoy ties closely what Joe said plane up air try notice wind shifts ground Im standing feel shift scoot glider over suspect thermal should 130 Model Aviation et units remember! NOT JUST CHARGERS- COMPLETE AUTOMAT/C BATTERY MA/NTENANCE SYSTEMS CaRa Products PO Box 221 on SD 57013 Hrs 912 9875924 27 central Time SASE information ers inquiries invited QUICK-BUILT SUPER TOUGH AirCore 40 family Trainer Explorer Floats NEW VHS VIDEO CATALOG $695 &h Texax es den s p ease add sa es tax US AhCore 4576 Ca e Chennau t Hanga 7 Da TX 75248 1800 336 0602 de sony o 214 250 9 40 nfo CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 IDe Pie j 1-5 ds1' Call 909 8853959 credit card 02-A SPORT SCALE Si SPANTWIN BOOM SPORTSTER 25 ID 40 POWER PLAN SI 200 PP jESSNA WING RIBS SIO00 CONST ARTICAL SI 50 Winners ToledoThe Masters others .Bob Holman Box 741 San Berdo CA 92402. threaded cyls & covers like cyke brown others round cover & cyl gaskets BOB MOCORD [ ADVANCED AERO PRODUCTS YS & OS SURPASS 120 WA~ IEXHAUST SYSTEMS FOA MITERN AIRCRAFT AND ULTiMATE lIFE SIUCONE COUPlERS AND TAIL PIPES ALSO AVAILABLE CALL ox wen FOx IFOeAATOx . 5LAJER HOxES IMTE5 PIT BOX 305-C ANNA TX 75409 l4 924-3940 WWII COMBAT SCALE 1 BF-1 09G MACCHI C202I 34 span Foam wing balsa fuse hardware ack designed event 7041 $289530 S&f-i Dealer inquires invite1 Call write free brochure Custom Cutters 4302N 750W LIgonler IN 46767 219 894-3370 takes dive considerable distance get Sometimes find lift sometimes dont point always learn something about whats going air Ive quoted Joe reference book before bears repeating Joe has said just about everything should know about air reading skills contained Dave Thornburgs Old Buzzards Soaring Book book available $1695 Pony X Press 5 Monticello Drive Albuquerque NM 87123 F3B World Championships About time read early August Joe Wurts US F3B Team will Israel competing biannual World Championships Joe will competing individualto defend world champion titlewhich allowed under rules defending World Champion YearWinning Individual 1977S Miller 1979A Wackerle 1981D Holley 1983R Decker 1985R Decker 1987R Liese 1989N Wright 1991JWurts Country USA Austria USA Germany Germany Germany Britain USA DADS/Michaelis Continued page 123 positioned bit behind hinge line hard Formica need sawed through cutting away ailerons Sides /s balsa shaped partial ribs added portion common base ahead hinge line Balsa fill added over receptacle unit built fitted opening cut inch wide core secured thin coats epoxy Additional /s balsa can fitted between side pieces form rigid frame thin plywood top protects working parts seeping epoxy eo M4//r16oo Learn fly planes private field Five 6 day course $350 Open year round Send SASE complete info Southwest RC Flying 2818 Carolina NE Albuquerque NM 87110505-832-6394 official three-man US team made up Larry Jolly Randy Spencer Daryl Perkins Joe Larry Daryl returning 91 team Randy Team Man ager have confidence depth ex perience will bring home both individual team trophies year historical interest below list past F3B individual team winners Leon Kincaids Heat Seeker Leon sent photos new polyhedral version Heat Seeker design original described January 1993 column wants let everyone know hes moved Colorado Springs back North Carolina also reports hes impressed way poly wing version turns nice tightly promises information once gets settled Plans Heat Seeker available Leon PO Box 357 Webster NC 28788 Phone 704 586-4278 ingContest TeamLocation USA S Africa S Africa Belgium Germany California Germany England Britain Australia Austria Germany Austria France Germany Holland avoids crushing during vacuum-bagging Before bagging prominently mark hinge line can cut later Mark bent wire location dont hit saw practical servo DADs can mounted inside wings top skin have ased DAD system four years concept may original have seen print anywhere event works very well pleasure pass what have learned find better ways fabricate install parts dont keep secret Im 26 South Roosevelt Walla Walla WA 99362 telephone number 509 529-2562 ir Custom R/C Ft Lauderdale Florida 505-776-7266 305-776-5212 Fax finest R/G aircraft contruction Custom construction kits plans Engine Radio Kit Sales Futaba Airtronics Enya 08 Byron Originals 81G Pica 1/4 Scale Grumman liger other kits accessories Helicopter Sales Repairs Kits Fully Flying Call discount pricing September 1993 131 WORLDS LARGEST SCALE PLANS & DOCuMENTATION SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS 120 PAGE CATALOG $500 USA & CANADA $1000 AIR OVERSEAS Jim Pepinos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE. GREENSBORO NC 21403 1292-5239 TAIL GAl-UK H Span38 380 sq.in 15-30 Radio 3 ch ht 2 3 lbs. Kit builds two planesl Simple & easy build Easy Fly mph est winner win fly Gatorl qm Orders Call 1-800-645-KITS Information call 609-448-1122 P0 Box 771 GENERIX East windsor NJ 08520 Tomorrows Kits Affordable Pricesl Write Free catalog Add $500 coo custom Kit cutters s Anyone Elses
Edition: Model Aviation - 1993/09
Page Numbers: 75, 76, 90, 130, 131
RADIO CONTROL SOARING indeed fortunate month have two interesting items Joe Wurts Valencia California undoubtedly know won 1991 F3B World Championships Holland First Joe tells about flying demonstration put local elementary school Second explains very instructive article reads air before during flight As far PR concerned glider show put kids probably very best thing club can enhance its image community Children nature thrilled magic Whats magical glider flying around seemingly itself especially controlled world champ Joes letter photos taken Canyon Springs Elementary School Santa Clarita California home flying club Santa Clarita Soaring Association SCSA put together flying static demonstration kids brought out Thermal Eagle F3B Eagle get morning off work explained away boss saying going expose kids aviation would help making future aeronautical engineers funny part will probably end up next generation model fliers knows might next Frank Zaic Walt Good club members event though Friday lots airplanes display kids check out along some kits could show built kids tended like slope ships fanciful finishes cant tell asked didnt fly little sloper looked like shark lot fun flying both Thermal Eagle F3B Eagle kind bracketed slow fast ends flying right safety set winches up way over end field launching meant fast run get over kids could talk flying completely enthralled kids being kids wanted see bit extra finally acceded flying Thermal Eagle underneath soccer goal post photos taken couple different members SCSA wish taken some pictures members talking children static display What took makes look like one-man show definitely Bill Centonze person put together John Snyder also took part flying As can see students lined up edge field would set up landing approach final right front could get upclose look plane air would either catch land feet photo looks like am looking down plane sitting actually shot plane just touch down way can tell little gap under tail absolute rapt attention little boy tank top front row club very thrilled suc cess doing demonstration didnt take much time effort repaid times over goodwill well future modelers may have generated As beginners soon discover after learn steer glider wantmore lessthe big challenge keeping blasted thing up quickiy becomes obvious need fly around nice up-going air lift avoid nasty down-going stuff sink Obvious yes Easy no beauties RC soaring can spend lifetime learning about reading what air doing really requires experience practice study concentration observation sometimes work good way leam air-reading skills stand next expert have him explain what hes doing flies sailplane around sky fly glider can coach fly way turn big make circles after youve become fairly experienced its still important study everything written really top guys kind material scarce though Thats feel privileged able print following piece amazing reader air Ive seen Read Air Joe Wurts biggest advantages competitor can have understanding awareness changing air around him no better feeling stepping up winch knowing lift sink field Nobody Ive seen yet can read air 100% time think can learn get better 80% accuracy practice good judgment Left During demonstration excited Santa Clarita students watch Joe prepares catch Thermal Eagle September 1993 75 Joe Wurts took Thermal Eagle Santa Clarita CA elementary school perform flight demonstrations children Top center Joe explains transmitter controls youngsters girl interprets hearing-impaired students Joe lands Thermal Eagle right feet Note rapt attention young fellow sitting just behind him Interested Soaring Electric Flight Great So Are Northeast Sailplane Products carry comprehensive line silent flight prod ucts industry sell RIO Sail planes Electrics related accessories reference features hundreds products doz ens informative articles technical infor mation great sport RIO silent flight can meet needs abilities beginner expert dedicated pro viding personal customer service Check out NSP..youll glad did Welcome world NSP first open unique reference will awe number quality products have Also ordering us easy fun because help step way order reference mail $700 $5 plus $2 s&h NSP Well ship reference via express mail arent completely satisfied simply send back prompt courteous refund Northeast Sailplane Products 16 Kirby Lane Williston Vermont 05495 Sailplane Products 1993 RC Soaring Electric Reference Northeast N N N Price $5 Northeast Sailplane Products Irby Lane Williston VT 05495 comprehensive reference Radio Control Soaring Electric Flight get quick primer what look locating thermals through ground signs picture perfect thermal beautiful column air centered flying field no wind blow away course air upper part column fed air lower part what feeding lower part thermal can visualize thinking thermal near ground big vacuum cleaner thermal sucks air its surroundings ground level air flowing towards thermal direction Similarly patch sink down-coming colder air air ground flows away kind like people running away tall stories case perfect thermal flags around field would pointing towards thermal away sink Now add some wind situation facing upwind thermal upwind would feel lull thermal sucks some air towards Remember hotshot competitor sandbagged winches waiting launch wind during lull Well hes going need zoom can get because will launching right sink following thermal Continued page 90 Right Leon Kincaid hoiding newest poiyhedral version Heat Seeker Air Force Academy coiorado Springs Straight-wing aileron original ground 76 Model Aviation e Leon Kincaids original latest version Heat Seeker arranged comparison workmanship beautiful models absolutely incredible 3 order call Eric Sanders @ 513-299-7684 Spm-IOpmEST Monday-Friday day Sat Sun State Artis Program CAD airfoil editor-rnv ,~ading edges undo mode 64x zoom pan mode coordinate ID mode shows current cursor position etc S Easy use windowing interface Pop up teat editor document airfoil changes-saved coordinates ulates elliptical planform rib lengths Chord queue allows templates several chord lengths printed out unattended edit coordinates Pop-up calculator conversions s foam outline screen optimize template height Customizable screen colors are airfoils screen printer using overlay mode ts mirror image Calculates panel volume & sarface area aide weight estimations Supports dot matrix laser jet printers Calculates projected panel area airfoil cross sectional area perimeter length tive negative washout Modify airfoils changing camber thicknessmirroring combining tops bottoms different airfoils Interpolates between different root tip airfoils position within wing panel uts DXF file aorh scaled unscaled hi-rev screen preview modes her\Cut ItmI calculator much much morel. Remember wine accurate templates ComptiFoil Professional-$65 Airfoil Library w/135 airfoils-SlO S&H add $3 Also available-CompuFoil Standard-$25 CompuFoil Plus-$45 Demo Disk-SS refundable order o vafte compatabjilty product oidedng mionnation TMe 0. Kettenng OH. 46429 I79t 111 1 FX6OIOf/65c/e4sIitJk RC SoaringlBlakeslee Continued page 76 caused lull think kind fitting punishment can generalize saying temporary shifts wind direction speed point either toward lift away sink Either way want fly toward downwind direction wind shift Remember means wind slows down lull thermal upwind relative wind shift against wind After learn observe trees grass other things read what wind shifts doing around flying field see trees upwind edge field getting hit gust wind probably means thermal downwind trees especially feel lull wind Similarly suddenly feel wind shift straight face left probably lift somewhere right have locate Once sensitized signs ground can start taking air read same signs via airplane Take simple case glider flying straight away straight upwind pass right thermal will likely notice yawing action glider showing drift right left means should turn left once again towards downwind shift go thermal clues can sometimes quite subtle once have found myself chasing phantom thermals over field misreading plane times have turned short flight long enjoyable just getting idea way turn Over last few years have occasion fly various sites around country well abroad have noticed yes people say thermals home field different correct what have also seen single location thermal conditions can vary quite bit southern California frequently see representative conditions similar over USA single month makes area good breeding ground competitive pilots airplanes will well broad variety flying conditions opposed point design planes appear some sections country evidently get much variation flying conditions warm humid conditions predominate Midwest East typically produce thermals quite diffuse near ground Thermals dry arid climate strong near ground because mechanism warming air bit different case turns out water vapor good absorber infrared radiation heat Continued page 130 90 Model Aviation Original ff~Ldiinch2r WroI Lh VmuIon AhoAvI Call Today Dealer Inquiries Welcome L riiaii IOU IUl OVER 2000 TOOLS & ACCESSORIES Brand Names'-Unusual Items. Exclusive Producls savings up 60% designed 10 make project easier enjoyable professional I I I L STATE__ZIPJ TO ORDER Send $100 coupon name address tn&nnnnrtrt MlcroMark 1434 Snyder Ave Berkeley Heights NJ 07922-1595 325-93 SYLVAN AVE MOUNTAIN VIEW CALIF 94041-1640 RO SoaringlBlakeslee Continued page 90 So hot humid case gives high value absolute humidity should compare absolute rather relative humidity way air gets warmed up caused ground getting warm reradiating heat back air can warm up air quite ways ground dry arid case ends up warming air primarily direct contact ground gives thermals strong start ground humid air thermals can just strong dry ones its just strong part much higher means practical terms humid thermals much difficult read fly near ground Ill define winch-launch height lower also fickle near ground frequently no solid core center humid conditions concept thermal-producing locations has lot validity thermals will constantly form over areas radiate well IR spectrum have detected shift relative wind pointing towards thermal next question find out far away turns out thermal spacing diameter influenced humidity also height inversion layer time desert-type conditions thermal spacing can order miles Thermals can upwards half mile across altitude five six miles between makes RC cross-country flying desert quite challenging times climb high can hope hit next thermal before hit ground have conditions like wind shifts limited use because might marking thermal mile away flying fields lift much smaller thermals coming userfriendly sizes can get feel phenomenon just studying carefully evolution thermals during cycle day Ever notice smoke chimney valley morning morning reasonably calm day air near ground quite cool compared air hundred feet up means inversion layer near ground first thermals morning can sometimes go up 50 100 feet size thermals correspondingly quite small As morning warms up inversion layer slowly climbs thermals eat inversion As inversion climbs thermal size spacing slowly increase good way see happening go out early hand-launch glider get some exercise first thermals will take plane up little bitand have times early morning launch off winch glide around until get down thermals some point air near ground gets what full-scale pilots refer trigger temperaturethe temperature inversion near ground disappearsat point large thermals start happening word caution about low thermals frequently will flying near top will mean earlier stuff about drift telling thermal will work advertised Actually near top thermal signs reverse Think top thermal smoke hitting ceiling spreads out So top thermal constantly push ing out really makes hard stay top thermal Getting frustrated flying early morning thermals can drive taking up power planes Seriously enjoy challenge especially knowing will last little best way learn signs quickiy flying hand-launch gliderthe feedback immediate dont read right have throw again Good luck sharpening air-reading skills Thanks great article Joe Now readers have go out practice what Joe saysand too could world champion thing Joe didnt men tion Ive noticed Joe likes fly barefoot Ive suspected feels minute air temperature changes through toesor something like Well have ask Joe write followup article subject Another beauties RC soaring flight unique Therefore practice andfiin flying dont tend get boring holds true whether youre flying little hand launcher beginners glider exotic full-house ship practice flying diversion enjoy ties closely what Joe said plane up air try notice wind shifts ground Im standing feel shift scoot glider over suspect thermal should 130 Model Aviation et units remember! NOT JUST CHARGERS- COMPLETE AUTOMAT/C BATTERY MA/NTENANCE SYSTEMS CaRa Products PO Box 221 on SD 57013 Hrs 912 9875924 27 central Time SASE information ers inquiries invited QUICK-BUILT SUPER TOUGH AirCore 40 family Trainer Explorer Floats NEW VHS VIDEO CATALOG $695 &h Texax es den s p ease add sa es tax US AhCore 4576 Ca e Chennau t Hanga 7 Da TX 75248 1800 336 0602 de sony o 214 250 9 40 nfo CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 IDe Pie j 1-5 ds1' Call 909 8853959 credit card 02-A SPORT SCALE Si SPANTWIN BOOM SPORTSTER 25 ID 40 POWER PLAN SI 200 PP jESSNA WING RIBS SIO00 CONST ARTICAL SI 50 Winners ToledoThe Masters others .Bob Holman Box 741 San Berdo CA 92402. threaded cyls & covers like cyke brown others round cover & cyl gaskets BOB MOCORD [ ADVANCED AERO PRODUCTS YS & OS SURPASS 120 WA~ IEXHAUST SYSTEMS FOA MITERN AIRCRAFT AND ULTiMATE lIFE SIUCONE COUPlERS AND TAIL PIPES ALSO AVAILABLE CALL ox wen FOx IFOeAATOx . 5LAJER HOxES IMTE5 PIT BOX 305-C ANNA TX 75409 l4 924-3940 WWII COMBAT SCALE 1 BF-1 09G MACCHI C202I 34 span Foam wing balsa fuse hardware ack designed event 7041 $289530 S&f-i Dealer inquires invite1 Call write free brochure Custom Cutters 4302N 750W LIgonler IN 46767 219 894-3370 takes dive considerable distance get Sometimes find lift sometimes dont point always learn something about whats going air Ive quoted Joe reference book before bears repeating Joe has said just about everything should know about air reading skills contained Dave Thornburgs Old Buzzards Soaring Book book available $1695 Pony X Press 5 Monticello Drive Albuquerque NM 87123 F3B World Championships About time read early August Joe Wurts US F3B Team will Israel competing biannual World Championships Joe will competing individualto defend world champion titlewhich allowed under rules defending World Champion YearWinning Individual 1977S Miller 1979A Wackerle 1981D Holley 1983R Decker 1985R Decker 1987R Liese 1989N Wright 1991JWurts Country USA Austria USA Germany Germany Germany Britain USA DADS/Michaelis Continued page 123 positioned bit behind hinge line hard Formica need sawed through cutting away ailerons Sides /s balsa shaped partial ribs added portion common base ahead hinge line Balsa fill added over receptacle unit built fitted opening cut inch wide core secured thin coats epoxy Additional /s balsa can fitted between side pieces form rigid frame thin plywood top protects working parts seeping epoxy eo M4//r16oo Learn fly planes private field Five 6 day course $350 Open year round Send SASE complete info Southwest RC Flying 2818 Carolina NE Albuquerque NM 87110505-832-6394 official three-man US team made up Larry Jolly Randy Spencer Daryl Perkins Joe Larry Daryl returning 91 team Randy Team Man ager have confidence depth ex perience will bring home both individual team trophies year historical interest below list past F3B individual team winners Leon Kincaids Heat Seeker Leon sent photos new polyhedral version Heat Seeker design original described January 1993 column wants let everyone know hes moved Colorado Springs back North Carolina also reports hes impressed way poly wing version turns nice tightly promises information once gets settled Plans Heat Seeker available Leon PO Box 357 Webster NC 28788 Phone 704 586-4278 ingContest TeamLocation USA S Africa S Africa Belgium Germany California Germany England Britain Australia Austria Germany Austria France Germany Holland avoids crushing during vacuum-bagging Before bagging prominently mark hinge line can cut later Mark bent wire location dont hit saw practical servo DADs can mounted inside wings top skin have ased DAD system four years concept may original have seen print anywhere event works very well pleasure pass what have learned find better ways fabricate install parts dont keep secret Im 26 South Roosevelt Walla Walla WA 99362 telephone number 509 529-2562 ir Custom R/C Ft Lauderdale Florida 505-776-7266 305-776-5212 Fax finest R/G aircraft contruction Custom construction kits plans Engine Radio Kit Sales Futaba Airtronics Enya 08 Byron Originals 81G Pica 1/4 Scale Grumman liger other kits accessories Helicopter Sales Repairs Kits Fully Flying Call discount pricing September 1993 131 WORLDS LARGEST SCALE PLANS & DOCuMENTATION SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS 120 PAGE CATALOG $500 USA & CANADA $1000 AIR OVERSEAS Jim Pepinos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE. GREENSBORO NC 21403 1292-5239 TAIL GAl-UK H Span38 380 sq.in 15-30 Radio 3 ch ht 2 3 lbs. Kit builds two planesl Simple & easy build Easy Fly mph est winner win fly Gatorl qm Orders Call 1-800-645-KITS Information call 609-448-1122 P0 Box 771 GENERIX East windsor NJ 08520 Tomorrows Kits Affordable Pricesl Write Free catalog Add $500 coo custom Kit cutters s Anyone Elses
Edition: Model Aviation - 1993/09
Page Numbers: 75, 76, 90, 130, 131
RADIO CONTROL SOARING indeed fortunate month have two interesting items Joe Wurts Valencia California undoubtedly know won 1991 F3B World Championships Holland First Joe tells about flying demonstration put local elementary school Second explains very instructive article reads air before during flight As far PR concerned glider show put kids probably very best thing club can enhance its image community Children nature thrilled magic Whats magical glider flying around seemingly itself especially controlled world champ Joes letter photos taken Canyon Springs Elementary School Santa Clarita California home flying club Santa Clarita Soaring Association SCSA put together flying static demonstration kids brought out Thermal Eagle F3B Eagle get morning off work explained away boss saying going expose kids aviation would help making future aeronautical engineers funny part will probably end up next generation model fliers knows might next Frank Zaic Walt Good club members event though Friday lots airplanes display kids check out along some kits could show built kids tended like slope ships fanciful finishes cant tell asked didnt fly little sloper looked like shark lot fun flying both Thermal Eagle F3B Eagle kind bracketed slow fast ends flying right safety set winches up way over end field launching meant fast run get over kids could talk flying completely enthralled kids being kids wanted see bit extra finally acceded flying Thermal Eagle underneath soccer goal post photos taken couple different members SCSA wish taken some pictures members talking children static display What took makes look like one-man show definitely Bill Centonze person put together John Snyder also took part flying As can see students lined up edge field would set up landing approach final right front could get upclose look plane air would either catch land feet photo looks like am looking down plane sitting actually shot plane just touch down way can tell little gap under tail absolute rapt attention little boy tank top front row club very thrilled suc cess doing demonstration didnt take much time effort repaid times over goodwill well future modelers may have generated As beginners soon discover after learn steer glider wantmore lessthe big challenge keeping blasted thing up quickiy becomes obvious need fly around nice up-going air lift avoid nasty down-going stuff sink Obvious yes Easy no beauties RC soaring can spend lifetime learning about reading what air doing really requires experience practice study concentration observation sometimes work good way leam air-reading skills stand next expert have him explain what hes doing flies sailplane around sky fly glider can coach fly way turn big make circles after youve become fairly experienced its still important study everything written really top guys kind material scarce though Thats feel privileged able print following piece amazing reader air Ive seen Read Air Joe Wurts biggest advantages competitor can have understanding awareness changing air around him no better feeling stepping up winch knowing lift sink field Nobody Ive seen yet can read air 100% time think can learn get better 80% accuracy practice good judgment Left During demonstration excited Santa Clarita students watch Joe prepares catch Thermal Eagle September 1993 75 Joe Wurts took Thermal Eagle Santa Clarita CA elementary school perform flight demonstrations children Top center Joe explains transmitter controls youngsters girl interprets hearing-impaired students Joe lands Thermal Eagle right feet Note rapt attention young fellow sitting just behind him Interested Soaring Electric Flight Great So Are Northeast Sailplane Products carry comprehensive line silent flight prod ucts industry sell RIO Sail planes Electrics related accessories reference features hundreds products doz ens informative articles technical infor mation great sport RIO silent flight can meet needs abilities beginner expert dedicated pro viding personal customer service Check out NSP..youll glad did Welcome world NSP first open unique reference will awe number quality products have Also ordering us easy fun because help step way order reference mail $700 $5 plus $2 s&h NSP Well ship reference via express mail arent completely satisfied simply send back prompt courteous refund Northeast Sailplane Products 16 Kirby Lane Williston Vermont 05495 Sailplane Products 1993 RC Soaring Electric Reference Northeast N N N Price $5 Northeast Sailplane Products Irby Lane Williston VT 05495 comprehensive reference Radio Control Soaring Electric Flight get quick primer what look locating thermals through ground signs picture perfect thermal beautiful column air centered flying field no wind blow away course air upper part column fed air lower part what feeding lower part thermal can visualize thinking thermal near ground big vacuum cleaner thermal sucks air its surroundings ground level air flowing towards thermal direction Similarly patch sink down-coming colder air air ground flows away kind like people running away tall stories case perfect thermal flags around field would pointing towards thermal away sink Now add some wind situation facing upwind thermal upwind would feel lull thermal sucks some air towards Remember hotshot competitor sandbagged winches waiting launch wind during lull Well hes going need zoom can get because will launching right sink following thermal Continued page 90 Right Leon Kincaid hoiding newest poiyhedral version Heat Seeker Air Force Academy coiorado Springs Straight-wing aileron original ground 76 Model Aviation e Leon Kincaids original latest version Heat Seeker arranged comparison workmanship beautiful models absolutely incredible 3 order call Eric Sanders @ 513-299-7684 Spm-IOpmEST Monday-Friday day Sat Sun State Artis Program CAD airfoil editor-rnv ,~ading edges undo mode 64x zoom pan mode coordinate ID mode shows current cursor position etc S Easy use windowing interface Pop up teat editor document airfoil changes-saved coordinates ulates elliptical planform rib lengths Chord queue allows templates several chord lengths printed out unattended edit coordinates Pop-up calculator conversions s foam outline screen optimize template height Customizable screen colors are airfoils screen printer using overlay mode ts mirror image Calculates panel volume & sarface area aide weight estimations Supports dot matrix laser jet printers Calculates projected panel area airfoil cross sectional area perimeter length tive negative washout Modify airfoils changing camber thicknessmirroring combining tops bottoms different airfoils Interpolates between different root tip airfoils position within wing panel uts DXF file aorh scaled unscaled hi-rev screen preview modes her\Cut ItmI calculator much much morel. Remember wine accurate templates ComptiFoil Professional-$65 Airfoil Library w/135 airfoils-SlO S&H add $3 Also available-CompuFoil Standard-$25 CompuFoil Plus-$45 Demo Disk-SS refundable order o vafte compatabjilty product oidedng mionnation TMe 0. Kettenng OH. 46429 I79t 111 1 FX6OIOf/65c/e4sIitJk RC SoaringlBlakeslee Continued page 76 caused lull think kind fitting punishment can generalize saying temporary shifts wind direction speed point either toward lift away sink Either way want fly toward downwind direction wind shift Remember means wind slows down lull thermal upwind relative wind shift against wind After learn observe trees grass other things read what wind shifts doing around flying field see trees upwind edge field getting hit gust wind probably means thermal downwind trees especially feel lull wind Similarly suddenly feel wind shift straight face left probably lift somewhere right have locate Once sensitized signs ground can start taking air read same signs via airplane Take simple case glider flying straight away straight upwind pass right thermal will likely notice yawing action glider showing drift right left means should turn left once again towards downwind shift go thermal clues can sometimes quite subtle once have found myself chasing phantom thermals over field misreading plane times have turned short flight long enjoyable just getting idea way turn Over last few years have occasion fly various sites around country well abroad have noticed yes people say thermals home field different correct what have also seen single location thermal conditions can vary quite bit southern California frequently see representative conditions similar over USA single month makes area good breeding ground competitive pilots airplanes will well broad variety flying conditions opposed point design planes appear some sections country evidently get much variation flying conditions warm humid conditions predominate Midwest East typically produce thermals quite diffuse near ground Thermals dry arid climate strong near ground because mechanism warming air bit different case turns out water vapor good absorber infrared radiation heat Continued page 130 90 Model Aviation Original ff~Ldiinch2r WroI Lh VmuIon AhoAvI Call Today Dealer Inquiries Welcome L riiaii IOU IUl OVER 2000 TOOLS & ACCESSORIES Brand Names'-Unusual Items. Exclusive Producls savings up 60% designed 10 make project easier enjoyable professional I I I L STATE__ZIPJ TO ORDER Send $100 coupon name address tn&nnnnrtrt MlcroMark 1434 Snyder Ave Berkeley Heights NJ 07922-1595 325-93 SYLVAN AVE MOUNTAIN VIEW CALIF 94041-1640 RO SoaringlBlakeslee Continued page 90 So hot humid case gives high value absolute humidity should compare absolute rather relative humidity way air gets warmed up caused ground getting warm reradiating heat back air can warm up air quite ways ground dry arid case ends up warming air primarily direct contact ground gives thermals strong start ground humid air thermals can just strong dry ones its just strong part much higher means practical terms humid thermals much difficult read fly near ground Ill define winch-launch height lower also fickle near ground frequently no solid core center humid conditions concept thermal-producing locations has lot validity thermals will constantly form over areas radiate well IR spectrum have detected shift relative wind pointing towards thermal next question find out far away turns out thermal spacing diameter influenced humidity also height inversion layer time desert-type conditions thermal spacing can order miles Thermals can upwards half mile across altitude five six miles between makes RC cross-country flying desert quite challenging times climb high can hope hit next thermal before hit ground have conditions like wind shifts limited use because might marking thermal mile away flying fields lift much smaller thermals coming userfriendly sizes can get feel phenomenon just studying carefully evolution thermals during cycle day Ever notice smoke chimney valley morning morning reasonably calm day air near ground quite cool compared air hundred feet up means inversion layer near ground first thermals morning can sometimes go up 50 100 feet size thermals correspondingly quite small As morning warms up inversion layer slowly climbs thermals eat inversion As inversion climbs thermal size spacing slowly increase good way see happening go out early hand-launch glider get some exercise first thermals will take plane up little bitand have times early morning launch off winch glide around until get down thermals some point air near ground gets what full-scale pilots refer trigger temperaturethe temperature inversion near ground disappearsat point large thermals start happening word caution about low thermals frequently will flying near top will mean earlier stuff about drift telling thermal will work advertised Actually near top thermal signs reverse Think top thermal smoke hitting ceiling spreads out So top thermal constantly push ing out really makes hard stay top thermal Getting frustrated flying early morning thermals can drive taking up power planes Seriously enjoy challenge especially knowing will last little best way learn signs quickiy flying hand-launch gliderthe feedback immediate dont read right have throw again Good luck sharpening air-reading skills Thanks great article Joe Now readers have go out practice what Joe saysand too could world champion thing Joe didnt men tion Ive noticed Joe likes fly barefoot Ive suspected feels minute air temperature changes through toesor something like Well have ask Joe write followup article subject Another beauties RC soaring flight unique Therefore practice andfiin flying dont tend get boring holds true whether youre flying little hand launcher beginners glider exotic full-house ship practice flying diversion enjoy ties closely what Joe said plane up air try notice wind shifts ground Im standing feel shift scoot glider over suspect thermal should 130 Model Aviation et units remember! NOT JUST CHARGERS- COMPLETE AUTOMAT/C BATTERY MA/NTENANCE SYSTEMS CaRa Products PO Box 221 on SD 57013 Hrs 912 9875924 27 central Time SASE information ers inquiries invited QUICK-BUILT SUPER TOUGH AirCore 40 family Trainer Explorer Floats NEW VHS VIDEO CATALOG $695 &h Texax es den s p ease add sa es tax US AhCore 4576 Ca e Chennau t Hanga 7 Da TX 75248 1800 336 0602 de sony o 214 250 9 40 nfo CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 IDe Pie j 1-5 ds1' Call 909 8853959 credit card 02-A SPORT SCALE Si SPANTWIN BOOM SPORTSTER 25 ID 40 POWER PLAN SI 200 PP jESSNA WING RIBS SIO00 CONST ARTICAL SI 50 Winners ToledoThe Masters others .Bob Holman Box 741 San Berdo CA 92402. threaded cyls & covers like cyke brown others round cover & cyl gaskets BOB MOCORD [ ADVANCED AERO PRODUCTS YS & OS SURPASS 120 WA~ IEXHAUST SYSTEMS FOA MITERN AIRCRAFT AND ULTiMATE lIFE SIUCONE COUPlERS AND TAIL PIPES ALSO AVAILABLE CALL ox wen FOx IFOeAATOx . 5LAJER HOxES IMTE5 PIT BOX 305-C ANNA TX 75409 l4 924-3940 WWII COMBAT SCALE 1 BF-1 09G MACCHI C202I 34 span Foam wing balsa fuse hardware ack designed event 7041 $289530 S&f-i Dealer inquires invite1 Call write free brochure Custom Cutters 4302N 750W LIgonler IN 46767 219 894-3370 takes dive considerable distance get Sometimes find lift sometimes dont point always learn something about whats going air Ive quoted Joe reference book before bears repeating Joe has said just about everything should know about air reading skills contained Dave Thornburgs Old Buzzards Soaring Book book available $1695 Pony X Press 5 Monticello Drive Albuquerque NM 87123 F3B World Championships About time read early August Joe Wurts US F3B Team will Israel competing biannual World Championships Joe will competing individualto defend world champion titlewhich allowed under rules defending World Champion YearWinning Individual 1977S Miller 1979A Wackerle 1981D Holley 1983R Decker 1985R Decker 1987R Liese 1989N Wright 1991JWurts Country USA Austria USA Germany Germany Germany Britain USA DADS/Michaelis Continued page 123 positioned bit behind hinge line hard Formica need sawed through cutting away ailerons Sides /s balsa shaped partial ribs added portion common base ahead hinge line Balsa fill added over receptacle unit built fitted opening cut inch wide core secured thin coats epoxy Additional /s balsa can fitted between side pieces form rigid frame thin plywood top protects working parts seeping epoxy eo M4//r16oo Learn fly planes private field Five 6 day course $350 Open year round Send SASE complete info Southwest RC Flying 2818 Carolina NE Albuquerque NM 87110505-832-6394 official three-man US team made up Larry Jolly Randy Spencer Daryl Perkins Joe Larry Daryl returning 91 team Randy Team Man ager have confidence depth ex perience will bring home both individual team trophies year historical interest below list past F3B individual team winners Leon Kincaids Heat Seeker Leon sent photos new polyhedral version Heat Seeker design original described January 1993 column wants let everyone know hes moved Colorado Springs back North Carolina also reports hes impressed way poly wing version turns nice tightly promises information once gets settled Plans Heat Seeker available Leon PO Box 357 Webster NC 28788 Phone 704 586-4278 ingContest TeamLocation USA S Africa S Africa Belgium Germany California Germany England Britain Australia Austria Germany Austria France Germany Holland avoids crushing during vacuum-bagging Before bagging prominently mark hinge line can cut later Mark bent wire location dont hit saw practical servo DADs can mounted inside wings top skin have ased DAD system four years concept may original have seen print anywhere event works very well pleasure pass what have learned find better ways fabricate install parts dont keep secret Im 26 South Roosevelt Walla Walla WA 99362 telephone number 509 529-2562 ir Custom R/C Ft Lauderdale Florida 505-776-7266 305-776-5212 Fax finest R/G aircraft contruction Custom construction kits plans Engine Radio Kit Sales Futaba Airtronics Enya 08 Byron Originals 81G Pica 1/4 Scale Grumman liger other kits accessories Helicopter Sales Repairs Kits Fully Flying Call discount pricing September 1993 131 WORLDS LARGEST SCALE PLANS & DOCuMENTATION SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS 120 PAGE CATALOG $500 USA & CANADA $1000 AIR OVERSEAS Jim Pepinos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE. GREENSBORO NC 21403 1292-5239 TAIL GAl-UK H Span38 380 sq.in 15-30 Radio 3 ch ht 2 3 lbs. Kit builds two planesl Simple & easy build Easy Fly mph est winner win fly Gatorl qm Orders Call 1-800-645-KITS Information call 609-448-1122 P0 Box 771 GENERIX East windsor NJ 08520 Tomorrows Kits Affordable Pricesl Write Free catalog Add $500 coo custom Kit cutters s Anyone Elses
Edition: Model Aviation - 1993/09
Page Numbers: 75, 76, 90, 130, 131
RADIO CONTROL SOARING indeed fortunate month have two interesting items Joe Wurts Valencia California undoubtedly know won 1991 F3B World Championships Holland First Joe tells about flying demonstration put local elementary school Second explains very instructive article reads air before during flight As far PR concerned glider show put kids probably very best thing club can enhance its image community Children nature thrilled magic Whats magical glider flying around seemingly itself especially controlled world champ Joes letter photos taken Canyon Springs Elementary School Santa Clarita California home flying club Santa Clarita Soaring Association SCSA put together flying static demonstration kids brought out Thermal Eagle F3B Eagle get morning off work explained away boss saying going expose kids aviation would help making future aeronautical engineers funny part will probably end up next generation model fliers knows might next Frank Zaic Walt Good club members event though Friday lots airplanes display kids check out along some kits could show built kids tended like slope ships fanciful finishes cant tell asked didnt fly little sloper looked like shark lot fun flying both Thermal Eagle F3B Eagle kind bracketed slow fast ends flying right safety set winches up way over end field launching meant fast run get over kids could talk flying completely enthralled kids being kids wanted see bit extra finally acceded flying Thermal Eagle underneath soccer goal post photos taken couple different members SCSA wish taken some pictures members talking children static display What took makes look like one-man show definitely Bill Centonze person put together John Snyder also took part flying As can see students lined up edge field would set up landing approach final right front could get upclose look plane air would either catch land feet photo looks like am looking down plane sitting actually shot plane just touch down way can tell little gap under tail absolute rapt attention little boy tank top front row club very thrilled suc cess doing demonstration didnt take much time effort repaid times over goodwill well future modelers may have generated As beginners soon discover after learn steer glider wantmore lessthe big challenge keeping blasted thing up quickiy becomes obvious need fly around nice up-going air lift avoid nasty down-going stuff sink Obvious yes Easy no beauties RC soaring can spend lifetime learning about reading what air doing really requires experience practice study concentration observation sometimes work good way leam air-reading skills stand next expert have him explain what hes doing flies sailplane around sky fly glider can coach fly way turn big make circles after youve become fairly experienced its still important study everything written really top guys kind material scarce though Thats feel privileged able print following piece amazing reader air Ive seen Read Air Joe Wurts biggest advantages competitor can have understanding awareness changing air around him no better feeling stepping up winch knowing lift sink field Nobody Ive seen yet can read air 100% time think can learn get better 80% accuracy practice good judgment Left During demonstration excited Santa Clarita students watch Joe prepares catch Thermal Eagle September 1993 75 Joe Wurts took Thermal Eagle Santa Clarita CA elementary school perform flight demonstrations children Top center Joe explains transmitter controls youngsters girl interprets hearing-impaired students Joe lands Thermal Eagle right feet Note rapt attention young fellow sitting just behind him Interested Soaring Electric Flight Great So Are Northeast Sailplane Products carry comprehensive line silent flight prod ucts industry sell RIO Sail planes Electrics related accessories reference features hundreds products doz ens informative articles technical infor mation great sport RIO silent flight can meet needs abilities beginner expert dedicated pro viding personal customer service Check out NSP..youll glad did Welcome world NSP first open unique reference will awe number quality products have Also ordering us easy fun because help step way order reference mail $700 $5 plus $2 s&h NSP Well ship reference via express mail arent completely satisfied simply send back prompt courteous refund Northeast Sailplane Products 16 Kirby Lane Williston Vermont 05495 Sailplane Products 1993 RC Soaring Electric Reference Northeast N N N Price $5 Northeast Sailplane Products Irby Lane Williston VT 05495 comprehensive reference Radio Control Soaring Electric Flight get quick primer what look locating thermals through ground signs picture perfect thermal beautiful column air centered flying field no wind blow away course air upper part column fed air lower part what feeding lower part thermal can visualize thinking thermal near ground big vacuum cleaner thermal sucks air its surroundings ground level air flowing towards thermal direction Similarly patch sink down-coming colder air air ground flows away kind like people running away tall stories case perfect thermal flags around field would pointing towards thermal away sink Now add some wind situation facing upwind thermal upwind would feel lull thermal sucks some air towards Remember hotshot competitor sandbagged winches waiting launch wind during lull Well hes going need zoom can get because will launching right sink following thermal Continued page 90 Right Leon Kincaid hoiding newest poiyhedral version Heat Seeker Air Force Academy coiorado Springs Straight-wing aileron original ground 76 Model Aviation e Leon Kincaids original latest version Heat Seeker arranged comparison workmanship beautiful models absolutely incredible 3 order call Eric Sanders @ 513-299-7684 Spm-IOpmEST Monday-Friday day Sat Sun State Artis Program CAD airfoil editor-rnv ,~ading edges undo mode 64x zoom pan mode coordinate ID mode shows current cursor position etc S Easy use windowing interface Pop up teat editor document airfoil changes-saved coordinates ulates elliptical planform rib lengths Chord queue allows templates several chord lengths printed out unattended edit coordinates Pop-up calculator conversions s foam outline screen optimize template height Customizable screen colors are airfoils screen printer using overlay mode ts mirror image Calculates panel volume & sarface area aide weight estimations Supports dot matrix laser jet printers Calculates projected panel area airfoil cross sectional area perimeter length tive negative washout Modify airfoils changing camber thicknessmirroring combining tops bottoms different airfoils Interpolates between different root tip airfoils position within wing panel uts DXF file aorh scaled unscaled hi-rev screen preview modes her\Cut ItmI calculator much much morel. Remember wine accurate templates ComptiFoil Professional-$65 Airfoil Library w/135 airfoils-SlO S&H add $3 Also available-CompuFoil Standard-$25 CompuFoil Plus-$45 Demo Disk-SS refundable order o vafte compatabjilty product oidedng mionnation TMe 0. Kettenng OH. 46429 I79t 111 1 FX6OIOf/65c/e4sIitJk RC SoaringlBlakeslee Continued page 76 caused lull think kind fitting punishment can generalize saying temporary shifts wind direction speed point either toward lift away sink Either way want fly toward downwind direction wind shift Remember means wind slows down lull thermal upwind relative wind shift against wind After learn observe trees grass other things read what wind shifts doing around flying field see trees upwind edge field getting hit gust wind probably means thermal downwind trees especially feel lull wind Similarly suddenly feel wind shift straight face left probably lift somewhere right have locate Once sensitized signs ground can start taking air read same signs via airplane Take simple case glider flying straight away straight upwind pass right thermal will likely notice yawing action glider showing drift right left means should turn left once again towards downwind shift go thermal clues can sometimes quite subtle once have found myself chasing phantom thermals over field misreading plane times have turned short flight long enjoyable just getting idea way turn Over last few years have occasion fly various sites around country well abroad have noticed yes people say thermals home field different correct what have also seen single location thermal conditions can vary quite bit southern California frequently see representative conditions similar over USA single month makes area good breeding ground competitive pilots airplanes will well broad variety flying conditions opposed point design planes appear some sections country evidently get much variation flying conditions warm humid conditions predominate Midwest East typically produce thermals quite diffuse near ground Thermals dry arid climate strong near ground because mechanism warming air bit different case turns out water vapor good absorber infrared radiation heat Continued page 130 90 Model Aviation Original ff~Ldiinch2r WroI Lh VmuIon AhoAvI Call Today Dealer Inquiries Welcome L riiaii IOU IUl OVER 2000 TOOLS & ACCESSORIES Brand Names'-Unusual Items. Exclusive Producls savings up 60% designed 10 make project easier enjoyable professional I I I L STATE__ZIPJ TO ORDER Send $100 coupon name address tn&nnnnrtrt MlcroMark 1434 Snyder Ave Berkeley Heights NJ 07922-1595 325-93 SYLVAN AVE MOUNTAIN VIEW CALIF 94041-1640 RO SoaringlBlakeslee Continued page 90 So hot humid case gives high value absolute humidity should compare absolute rather relative humidity way air gets warmed up caused ground getting warm reradiating heat back air can warm up air quite ways ground dry arid case ends up warming air primarily direct contact ground gives thermals strong start ground humid air thermals can just strong dry ones its just strong part much higher means practical terms humid thermals much difficult read fly near ground Ill define winch-launch height lower also fickle near ground frequently no solid core center humid conditions concept thermal-producing locations has lot validity thermals will constantly form over areas radiate well IR spectrum have detected shift relative wind pointing towards thermal next question find out far away turns out thermal spacing diameter influenced humidity also height inversion layer time desert-type conditions thermal spacing can order miles Thermals can upwards half mile across altitude five six miles between makes RC cross-country flying desert quite challenging times climb high can hope hit next thermal before hit ground have conditions like wind shifts limited use because might marking thermal mile away flying fields lift much smaller thermals coming userfriendly sizes can get feel phenomenon just studying carefully evolution thermals during cycle day Ever notice smoke chimney valley morning morning reasonably calm day air near ground quite cool compared air hundred feet up means inversion layer near ground first thermals morning can sometimes go up 50 100 feet size thermals correspondingly quite small As morning warms up inversion layer slowly climbs thermals eat inversion As inversion climbs thermal size spacing slowly increase good way see happening go out early hand-launch glider get some exercise first thermals will take plane up little bitand have times early morning launch off winch glide around until get down thermals some point air near ground gets what full-scale pilots refer trigger temperaturethe temperature inversion near ground disappearsat point large thermals start happening word caution about low thermals frequently will flying near top will mean earlier stuff about drift telling thermal will work advertised Actually near top thermal signs reverse Think top thermal smoke hitting ceiling spreads out So top thermal constantly push ing out really makes hard stay top thermal Getting frustrated flying early morning thermals can drive taking up power planes Seriously enjoy challenge especially knowing will last little best way learn signs quickiy flying hand-launch gliderthe feedback immediate dont read right have throw again Good luck sharpening air-reading skills Thanks great article Joe Now readers have go out practice what Joe saysand too could world champion thing Joe didnt men tion Ive noticed Joe likes fly barefoot Ive suspected feels minute air temperature changes through toesor something like Well have ask Joe write followup article subject Another beauties RC soaring flight unique Therefore practice andfiin flying dont tend get boring holds true whether youre flying little hand launcher beginners glider exotic full-house ship practice flying diversion enjoy ties closely what Joe said plane up air try notice wind shifts ground Im standing feel shift scoot glider over suspect thermal should 130 Model Aviation et units remember! NOT JUST CHARGERS- COMPLETE AUTOMAT/C BATTERY MA/NTENANCE SYSTEMS CaRa Products PO Box 221 on SD 57013 Hrs 912 9875924 27 central Time SASE information ers inquiries invited QUICK-BUILT SUPER TOUGH AirCore 40 family Trainer Explorer Floats NEW VHS VIDEO CATALOG $695 &h Texax es den s p ease add sa es tax US AhCore 4576 Ca e Chennau t Hanga 7 Da TX 75248 1800 336 0602 de sony o 214 250 9 40 nfo CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 IDe Pie j 1-5 ds1' Call 909 8853959 credit card 02-A SPORT SCALE Si SPANTWIN BOOM SPORTSTER 25 ID 40 POWER PLAN SI 200 PP jESSNA WING RIBS SIO00 CONST ARTICAL SI 50 Winners ToledoThe Masters others .Bob Holman Box 741 San Berdo CA 92402. threaded cyls & covers like cyke brown others round cover & cyl gaskets BOB MOCORD [ ADVANCED AERO PRODUCTS YS & OS SURPASS 120 WA~ IEXHAUST SYSTEMS FOA MITERN AIRCRAFT AND ULTiMATE lIFE SIUCONE COUPlERS AND TAIL PIPES ALSO AVAILABLE CALL ox wen FOx IFOeAATOx . 5LAJER HOxES IMTE5 PIT BOX 305-C ANNA TX 75409 l4 924-3940 WWII COMBAT SCALE 1 BF-1 09G MACCHI C202I 34 span Foam wing balsa fuse hardware ack designed event 7041 $289530 S&f-i Dealer inquires invite1 Call write free brochure Custom Cutters 4302N 750W LIgonler IN 46767 219 894-3370 takes dive considerable distance get Sometimes find lift sometimes dont point always learn something about whats going air Ive quoted Joe reference book before bears repeating Joe has said just about everything should know about air reading skills contained Dave Thornburgs Old Buzzards Soaring Book book available $1695 Pony X Press 5 Monticello Drive Albuquerque NM 87123 F3B World Championships About time read early August Joe Wurts US F3B Team will Israel competing biannual World Championships Joe will competing individualto defend world champion titlewhich allowed under rules defending World Champion YearWinning Individual 1977S Miller 1979A Wackerle 1981D Holley 1983R Decker 1985R Decker 1987R Liese 1989N Wright 1991JWurts Country USA Austria USA Germany Germany Germany Britain USA DADS/Michaelis Continued page 123 positioned bit behind hinge line hard Formica need sawed through cutting away ailerons Sides /s balsa shaped partial ribs added portion common base ahead hinge line Balsa fill added over receptacle unit built fitted opening cut inch wide core secured thin coats epoxy Additional /s balsa can fitted between side pieces form rigid frame thin plywood top protects working parts seeping epoxy eo M4//r16oo Learn fly planes private field Five 6 day course $350 Open year round Send SASE complete info Southwest RC Flying 2818 Carolina NE Albuquerque NM 87110505-832-6394 official three-man US team made up Larry Jolly Randy Spencer Daryl Perkins Joe Larry Daryl returning 91 team Randy Team Man ager have confidence depth ex perience will bring home both individual team trophies year historical interest below list past F3B individual team winners Leon Kincaids Heat Seeker Leon sent photos new polyhedral version Heat Seeker design original described January 1993 column wants let everyone know hes moved Colorado Springs back North Carolina also reports hes impressed way poly wing version turns nice tightly promises information once gets settled Plans Heat Seeker available Leon PO Box 357 Webster NC 28788 Phone 704 586-4278 ingContest TeamLocation USA S Africa S Africa Belgium Germany California Germany England Britain Australia Austria Germany Austria France Germany Holland avoids crushing during vacuum-bagging Before bagging prominently mark hinge line can cut later Mark bent wire location dont hit saw practical servo DADs can mounted inside wings top skin have ased DAD system four years concept may original have seen print anywhere event works very well pleasure pass what have learned find better ways fabricate install parts dont keep secret Im 26 South Roosevelt Walla Walla WA 99362 telephone number 509 529-2562 ir Custom R/C Ft Lauderdale Florida 505-776-7266 305-776-5212 Fax finest R/G aircraft contruction Custom construction kits plans Engine Radio Kit Sales Futaba Airtronics Enya 08 Byron Originals 81G Pica 1/4 Scale Grumman liger other kits accessories Helicopter Sales Repairs Kits Fully Flying Call discount pricing September 1993 131 WORLDS LARGEST SCALE PLANS & DOCuMENTATION SERVICE 100000 AIRCRAFT PHOTOS PLANS ENLARGING 130 SCALE PLANS 120 PAGE CATALOG $500 USA & CANADA $1000 AIR OVERSEAS Jim Pepinos SCALE PLANS AND PHOTO SERVICE 3209 MADISON AVE. GREENSBORO NC 21403 1292-5239 TAIL GAl-UK H Span38 380 sq.in 15-30 Radio 3 ch ht 2 3 lbs. Kit builds two planesl Simple & easy build Easy Fly mph est winner win fly Gatorl qm Orders Call 1-800-645-KITS Information call 609-448-1122 P0 Box 771 GENERIX East windsor NJ 08520 Tomorrows Kits Affordable Pricesl Write Free catalog Add $500 coo custom Kit cutters s Anyone Elses
Edition: Model Aviation - 1993/09
Page Numbers: 75, 76, 90, 130, 131
RADIO CONTROL SOARING indeed fortunate month have two interesting items Joe Wurts Valencia California undoubtedly know won 1991 F3B World Championships Holland First Joe tells about flying demonstration put local elementary school Second explains very instructive article reads air before during flight As far PR concerned glider show put kids probably very best thing club can enhance its image community Children nature thrilled magic Whats magical glider flying around seemingly itself especially controlled world champ Joes letter photos taken Canyon Springs Elementary School Santa Clarita California home flying club Santa Clarita Soaring Association SCSA put together flying static demonstration kids brought out Thermal Eagle F3B Eagle get morning off work explained away boss saying going expose kids aviation would help making future aeronautical engineers funny part will probably end up next generation model fliers knows might next Frank Zaic Walt Good club members event though Friday lots airplanes display kids check out along some kits could show built kids tended like slope ships fanciful finishes cant tell asked didnt fly little sloper looked like shark lot fun flying both Thermal Eagle F3B Eagle kind bracketed slow fast ends flying right safety set winches up way over end field launching meant fast run get over kids could talk flying completely enthralled kids being kids wanted see bit extra finally acceded flying Thermal Eagle underneath soccer goal post photos taken couple different members SCSA wish taken some pictures members talking children static display What took makes look like one-man show definitely Bill Centonze person put together John Snyder also took part flying As can see students lined up edge field would set up landing approach final right front could get upclose look plane air would either catch land feet photo looks like am looking down plane sitting actually shot plane just touch down way can tell little gap under tail absolute rapt attention little boy tank top front row club very thrilled suc cess doing demonstration didnt take much time effort repaid times over goodwill well future modelers may have generated As beginners soon discover after learn steer glider wantmore lessthe big challenge keeping blasted thing up quickiy becomes obvious need fly around nice up-going air lift avoid nasty down-going stuff sink Obvious yes Easy no beauties RC soaring can spend lifetime learning about reading what air doing really requires experience practice study concentration observation sometimes work good way leam air-reading skills stand next expert have him explain what hes doing flies sailplane around sky fly glider can coach fly way turn big make circles after youve become fairly experienced its still important study everything written really top guys kind material scarce though Thats feel privileged able print following piece amazing reader air Ive seen Read Air Joe Wurts biggest advantages competitor can have understanding awareness changing air around him no better feeling stepping up winch knowing lift sink field Nobody Ive seen yet can read air 100% time think can learn get better 80% accuracy practice good judgment Left During demonstration excited Santa Clarita students watch Joe prepares catch Thermal Eagle September 1993 75 Joe Wurts took Thermal Eagle Santa Clarita CA elementary school perform flight demonstrations children Top center Joe explains transmitter controls youngsters girl interprets hearing-impaired students Joe lands Thermal Eagle right feet Note rapt attention young fellow sitting just behind him Interested Soaring Electric Flight Great So Are Northeast Sailplane Products carry comprehensive line silent flight prod ucts industry sell RIO Sail planes Electrics related accessories reference features hundreds products doz ens informative articles technical infor mation great sport RIO silent flight can meet needs abilities beginner expert dedicated pro viding personal customer service Check out NSP..youll glad did Welcome world NSP first open unique reference will awe number quality products have Also ordering us easy fun because help step way order reference mail $700 $5 plus $2 s&h NSP Well ship reference via express mail arent completely satisfied simply send back prompt courteous refund Northeast Sailplane Products 16 Kirby Lane Williston Vermont 05495 Sailplane Products 1993 RC Soaring Electric Reference Northeast N N N Price $5 Northeast Sailplane Products Irby Lane Williston VT 05495 comprehensive reference Radio Control Soaring Electric Flight get quick primer what look locating thermals through ground signs picture perfect thermal beautiful column air centered flying field no wind blow away course air upper part column fed air lower part what feeding lower part thermal can visualize thinking thermal near ground big vacuum cleaner thermal sucks air its surroundings ground level air flowing towards thermal direction Similarly patch sink down-coming colder air air ground flows away kind like people running away tall stories case perfect thermal flags around field would pointing towards thermal away sink Now add some wind situation facing upwind thermal upwind would feel lull thermal sucks some air towards Remember hotshot competitor sandbagged winches waiting launch wind during lull Well hes going need zoom can get because will launching right sink following thermal Continued page 90 Right Leon Kincaid hoiding newest poiyhedral version Heat Seeker Air Force Academy coiorado Springs Straight-wing aileron original ground 76 Model Aviation e Leon Kincaids original latest version Heat Seeker arranged comparison workmanship beautiful models absolutely incredible 3 order call Eric Sanders @ 513-299-7684 Spm-IOpmEST Monday-Friday day Sat Sun State Artis Program CAD airfoil editor-rnv ,~ading edges undo mode 64x zoom pan mode coordinate ID mode shows current cursor position etc S Easy use windowing interface Pop up teat editor 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Kettenng OH. 46429 I79t 111 1 FX6OIOf/65c/e4sIitJk RC SoaringlBlakeslee Continued page 76 caused lull think kind fitting punishment can generalize saying temporary shifts wind direction speed point either toward lift away sink Either way want fly toward downwind direction wind shift Remember means wind slows down lull thermal upwind relative wind shift against wind After learn observe trees grass other things read what wind shifts doing around flying field see trees upwind edge field getting hit gust wind probably means thermal downwind trees especially feel lull wind Similarly suddenly feel wind shift straight face left probably lift somewhere right have locate Once sensitized signs ground can start taking air read same signs via airplane Take simple case glider flying straight away straight upwind pass right thermal will likely notice yawing action glider showing drift right left means should turn left once again towards downwind shift go thermal clues can sometimes quite subtle once have found myself chasing phantom thermals over field misreading plane times have turned short flight long enjoyable just getting idea way turn Over last few years have occasion fly various sites around country well abroad have noticed yes people say thermals home field different correct what have also seen single location thermal conditions can vary quite bit southern California frequently see representative conditions similar over USA single month makes area good breeding ground competitive pilots airplanes will well broad variety flying conditions opposed point design planes appear some sections country evidently get much variation flying conditions warm humid conditions predominate Midwest East typically produce thermals quite diffuse near ground Thermals dry arid climate strong near ground because mechanism warming air bit different case turns out water vapor good absorber infrared radiation heat Continued page 130 90 Model Aviation Original ff~Ldiinch2r WroI Lh VmuIon AhoAvI Call Today Dealer Inquiries Welcome L riiaii IOU IUl OVER 2000 TOOLS & ACCESSORIES Brand Names'-Unusual Items. Exclusive Producls savings up 60% designed 10 make project easier enjoyable professional I I I L STATE__ZIPJ TO ORDER Send $100 coupon name address tn&nnnnrtrt MlcroMark 1434 Snyder Ave Berkeley Heights NJ 07922-1595 325-93 SYLVAN AVE MOUNTAIN VIEW CALIF 94041-1640 RO SoaringlBlakeslee Continued page 90 So hot humid case gives high value absolute humidity should compare absolute rather relative humidity way air gets warmed up caused ground getting warm reradiating heat back air can warm up air quite ways ground dry arid case ends up warming air primarily direct contact ground gives thermals strong start ground humid air thermals can just strong dry ones its just strong part much higher means practical terms humid thermals much difficult read fly near ground Ill define winch-launch height lower also fickle near ground frequently no solid core center humid conditions concept thermal-producing locations has lot validity thermals will constantly form over areas radiate well IR spectrum have detected shift relative wind pointing towards thermal next question find out far away turns out thermal spacing diameter influenced humidity also height inversion layer time desert-type conditions thermal spacing can order miles Thermals can upwards half mile across altitude five six miles between makes RC cross-country flying desert quite challenging times climb high can hope hit next thermal before hit ground have conditions like wind shifts limited use because might marking thermal mile away flying fields lift much smaller thermals coming userfriendly sizes can get feel phenomenon just studying carefully evolution thermals during cycle day Ever notice smoke chimney valley morning morning reasonably calm day air near ground quite cool compared air hundred feet up means inversion layer near ground first thermals morning can sometimes go up 50 100 feet size thermals correspondingly quite small As morning warms up inversion layer slowly climbs thermals eat inversion As inversion climbs thermal size spacing slowly increase good way see happening go out early hand-launch glider get some exercise first thermals will take plane up little bitand have times early morning launch off winch glide around until get down thermals some point air near ground gets what full-scale pilots refer trigger temperaturethe temperature inversion near ground disappearsat point large thermals start happening word caution about low thermals frequently will flying near top will mean earlier stuff about drift telling thermal will work advertised Actually near top thermal signs reverse Think top thermal smoke hitting ceiling spreads out So top thermal constantly push ing out really makes hard stay top thermal Getting frustrated flying early morning thermals can drive taking up power planes Seriously enjoy challenge especially knowing will last little best way learn signs quickiy flying hand-launch gliderthe feedback immediate dont read right have throw again Good luck sharpening air-reading skills Thanks great article Joe Now readers have go out practice what Joe saysand too could world champion thing Joe didnt men tion Ive noticed Joe likes fly barefoot Ive suspected feels minute air temperature changes through toesor something like Well have ask Joe write followup article subject Another beauties RC soaring flight unique Therefore practice andfiin flying dont tend get boring holds true whether youre flying little hand launcher beginners glider exotic full-house ship practice flying diversion enjoy ties closely what Joe said plane up air try notice wind shifts ground Im standing feel shift scoot glider over suspect thermal should 130 Model Aviation et units remember! 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