Radio Control Sport Aerobatics Ron Van Putte THE NATS will over read Ill busily preparing Nats RC Pattern report publication hope everyone went Nats great time carried away pleasant memories However flew Expert class RC Pattern hope finished behind reported Competition News letter August issue thought wouldnt hurt mention RC Aerobatics Contest Board Final Vote resulted failure rule proposal combine Expert Master single class called Open people saying Open class would reality 1988-89 based Initial Vote However believe new proposal 1990-91 rule book featuring Open class beginners-level Turnaround class will offered will pass permitting dual route competitors Advanced class decide whether fly AMA pattern Turnaround pattern Pvc several letters about anhedral negative dihedral horizontal stabilizers Curare Tiporare writers want know what anhedral does airplanes dont have either dihedral no simple answer comes anhedral horizontal stabilizers Like design features involves compromises airplanes concerned same cornpromises Basically anhedral horizontal stabilizer results two effects first lowering equivalent horizontal tail anhedral causes horizontal tall act like flat tail would moved downward second effect complicated tends cause airplane sideslip roll direction opposite sideslip Thats contrary what would normally expect airplane So would want complicate airplane construction putting anhedral horizontal tall depends airplane example its good idea put horizontal tail wash wing Most wings have wake nasty horizontal tail operating tail should above below nasty wing wake wing wake directly behind wing wing deflects airflow down produc ing lift angle deflection proportional amount lift being produced other factors dictate horizontal tail should attached fuselage particular place would put tail wing wake anhedral tail can used drop horizontal tail below wing wake Now what about adverse rolling effect anhedral horizontal tail some airplanes used improve point rolls adding just enough adverse rolling moment negate positive-rolling effects some other design features airplane Obviously air planes have same design features dont need anhedral horizontal stabilizer fact some airplanes could use some dihedral horizontal tail suspect Hanno Prettner discovered amount anhedral horizontal tail Curare caused improved point rolls also suspect did because looks neat way read interesting story about anhedral tail McDonnellDouglas F4 Phantom II seems company test pilots fly F4 simulator report professional opinions airplanes flying characteristics angle anhedral horizontal tail changed software simulators computer anhedral angle production F4 horizontal stabilizer the pilots liked best bottom line isnt waited patiently letters Coriolis acceler ation fly-killing using conservation energy patience rewarded dual blast Frank MockEdwardsburg MI wrote am writing letter member Panama City Beach FL Edwardsburg MI chapters Save-a-Fly organizations Lam appalled sadistic method stunning flies Only frustrated non-fighter pilot could take such action May suggest sir purchase vehicle sunroof urge stun fly hits take following action Upon discovery fly proceed open sunroof increase speed 75 mph potential kinetic forces conjunction Coriolis acceleration will drive fly rear vehicle Now spin steering wheel right slam brakes Coriolis cyclonic vortex action will spin fly up out 42 Model Aviation Freddy Hagens Daytona Beach FL built Atlanta plane took picture Lisa Fernandes holding Plane has Rossi 61 engine uses K&B Superpoxy Mono Kote finish Site Wait Disney World popular item appear Rons column servo tester Ron mailed out hundreds schematics Al Shukie Mary Esther FL recently made using Radio Shack PC materials guy changed Nate Pattern Nat Penton DC Quincy LA models what format Mike Harrison L doing what another competitor called orthopedic does besttalking John Fuqua District V transmitter holder Nat pokes some fun RC Aerobatics Contest Board member is- biased Pattern judges piece Rons tens patiently Plane Mikes Summit ii column month Read smile open sunroof case youre wondering Franks tongue firmly cheek wrote letter wonder knew Im frustrated nonfighter pilot Its long story Im sure nobody except long-suffering wife willing put up pilot option Advanced Air Force ROTC Purdue Univer sity Shortly after receiving ~ssion. Oh never mind also received letter Alicia Goode DC Quincy LA wrote After several years thousands dollars firm has developed automated judging device Pat tern Anyone common sense no Pattern experience can operate equipment order ensure accuracy has following adjustment knobs airplane engine pilots halo caller local quirks time day presently waiting patent assignments expect equipment widespread use Nats time person know De Quincy old leg-puller named Nat Penton return address envelope looks suspiciously like Nats Several years ago received letter Glenn Gressens Baton Rouge LA about proposed event called Radio Control Duration wrote back Glenn talked him phone about agreed good idea new type RC competition just got another letter him reported Radio Control Duration will 198 8-89 AMA nile book provisional event As Glenn envisions Radio Control Dura tion event can flown small fields sport RC fliers low weight slow speed models will provide inher ently safe event Aircraft processing contest management can handled minimum manpower promoted significant chal lenge serious competitors within frame work fan-type event So what Radio Control Duration Duration event obviously aircraft engine propeller limitations example max imum model wingspan 60 mini mum wing loading eight ounces per square foot projected wing area engine must stock Cox 049 cu reed-valve engine standard 8cc fuel tank furnished Black Widow Golden Bee engines propeller must two-blade wood plastic reinforcedcomposite type maximum diameter seven inches event goes like pilot has six attempts make three official flights Time starts airplane launched ends touches down touchdown must designated recovery area time flight zero maximum time allowed per flight 15 minutes Glenn reported competition held club Baton Rouge RC Club Most airplanes standard Glider kits power pods nose-mounted engines First place among 10 fliers 56 official flights went Gentle Lady power pod top three wmnningtimeswere4l09 3749and37l4out 4500 maximum officiating processing score-keeping handled Contest Director help four timers same crew officials could have handled least 20 competitors difficulty sounds like enjoyable relaxed form Continued page 135 4m going flying words conjure up images battles balky engines instead carefree days field youre using McDaniel R/C NiStarterTM light plug NiStartersTM heavy-duty nicad power will provide up 50 reliable quick starts charge features famous Head LockTM adapter brass reinforcing ring around crimped end really extends its life works sideways inverted information well NiStarter works just go local flying field may have wait NiStartersTM always flying McDaniel FIncorPorated] 12206 Guinevere Road enn Dale MD 20769 301464-2260 Telex 287901 McD-UR take hassle out hobby H obby Horn ~/140dL LA95SDS DAD MODEL 1991 BROOKLYN DODGER 56 Cabin"0NEWEST Retail $5295"INTRODUCTORY PRICE$3980 1938 Record Breaker 96 $6956 l939Zipper59$5356 1938 Kloud King 63 $9236 1991 Brigidier 56 $9976 1991 Super Ouaker 78 $7276 1999 So Long 50S3036 1936 Buccaneer 89 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 198 $75 16 1935 9iiss America 89 $7196 1991 Playboy Sr 89 $5116 1991 Playboy Jr 59$3116 1938 Powerhouse 89 $5356 1990 Sailplane 78 $6976 1938 Trenton Terror 72 $9076 1998 Ranger 96$3196 1939 Korda Wake 99 $1916 1939 Mercury 72 6 kits qualify SAM events FF & RIG feature highest quality machine cut & sanded parts Superior alt Competilion alt sheet strip wood wire & window material Plane orig PF models easily convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1809 Midway Model GNOME R/G Hand Launch Glider$2908 Jolly Models FLINGER R/C HLG 58 Span$2980 Midway Model FAST EDDIE Aerobatic /81 Elec$1908 Jolly Models ELECTRICUS Electric Glider 85s$3256 Leisure PLAYBOY SR 67 Gear OS Elect $3088 Astro ASTRO SPORT 37 Direct OS Elect $2210 Leisure WASP 37 Direct 85 Electrics$2258 Midway ULTRA MK IV 86 Geared 99 EP $3900 Midway PLYING QUAKER 89 96919 stroke $6976 9ks/Midway DENNY JR 72 Alum Cowel$6396 Oks/Midway BUZZARD BOMBSHELL 72$5196 FULL LINE OF ELECTRIC SYSTEMS 6 Parts Avail Sl1lllllIt S IIRIIIJLING Up $880 add $150 $801 $2890 add $225 $2881 $9180 add $390 $9501 $7009 add $350 over $7089 add $908 CA Addressees add 6% tax Send MO Visa/MC9Exp Check allow up 38 days CK clearance COD Exact Charges plus $110 Hdl Cash Only 64 Page CATALOGUE $200 PP/tat Class copy will sent free-when requestedwith order HOBBY HORN 15173 Moran St [Al PO Box 2212 Westminster Ca 92689 1719 8938311 [Aft Nra 719 8951203] September 1987 43 [DCO SKY DVI[ 65 Ignition Approved 90 Day WarraAty Twin Ball Bearing Crank Americas tlnest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red head--T&Ds replica Sky Devil 65 $279 less coil cond & plug Calif resIdents add 6% sales tsx ORDER DIRECT T&D RESEARCH ASSOCIAms 6371 El Cajon BId Suite 115 San Diego CA 92115 $1 FOR BROCHURE youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 42, 43, 135
Radio Control Sport Aerobatics Ron Van Putte THE NATS will over read Ill busily preparing Nats RC Pattern report publication hope everyone went Nats great time carried away pleasant memories However flew Expert class RC Pattern hope finished behind reported Competition News letter August issue thought wouldnt hurt mention RC Aerobatics Contest Board Final Vote resulted failure rule proposal combine Expert Master single class called Open people saying Open class would reality 1988-89 based Initial Vote However believe new proposal 1990-91 rule book featuring Open class beginners-level Turnaround class will offered will pass permitting dual route competitors Advanced class decide whether fly AMA pattern Turnaround pattern Pvc several letters about anhedral negative dihedral horizontal stabilizers Curare Tiporare writers want know what anhedral does airplanes dont have either dihedral no simple answer comes anhedral horizontal stabilizers Like design features involves compromises airplanes concerned same cornpromises Basically anhedral horizontal stabilizer results two effects first lowering equivalent horizontal tail anhedral causes horizontal tall act like flat tail would moved downward second effect complicated tends cause airplane sideslip roll direction opposite sideslip Thats contrary what would normally expect airplane So would want complicate airplane construction putting anhedral horizontal tall depends airplane example its good idea put horizontal tail wash wing Most wings have wake nasty horizontal tail operating tail should above below nasty wing wake wing wake directly behind wing wing deflects airflow down produc ing lift angle deflection proportional amount lift being produced other factors dictate horizontal tail should attached fuselage particular place would put tail wing wake anhedral tail can used drop horizontal tail below wing wake Now what about adverse rolling effect anhedral horizontal tail some airplanes used improve point rolls adding just enough adverse rolling moment negate positive-rolling effects some other design features airplane Obviously air planes have same design features dont need anhedral horizontal stabilizer fact some airplanes could use some dihedral horizontal tail suspect Hanno Prettner discovered amount anhedral horizontal tail Curare caused improved point rolls also suspect did because looks neat way read interesting story about anhedral tail McDonnellDouglas F4 Phantom II seems company test pilots fly F4 simulator report professional opinions airplanes flying characteristics angle anhedral horizontal tail changed software simulators computer anhedral angle production F4 horizontal stabilizer the pilots liked best bottom line isnt waited patiently letters Coriolis acceler ation fly-killing using conservation energy patience rewarded dual blast Frank MockEdwardsburg MI wrote am writing letter member Panama City Beach FL Edwardsburg MI chapters Save-a-Fly organizations Lam appalled sadistic method stunning flies Only frustrated non-fighter pilot could take such action May suggest sir purchase vehicle sunroof urge stun fly hits take following action Upon discovery fly proceed open sunroof increase speed 75 mph potential kinetic forces conjunction Coriolis acceleration will drive fly rear vehicle Now spin steering wheel right slam brakes Coriolis cyclonic vortex action will spin fly up out 42 Model Aviation Freddy Hagens Daytona Beach FL built Atlanta plane took picture Lisa Fernandes holding Plane has Rossi 61 engine uses K&B Superpoxy Mono Kote finish Site Wait Disney World popular item appear Rons column servo tester Ron mailed out hundreds schematics Al Shukie Mary Esther FL recently made using Radio Shack PC materials guy changed Nate Pattern Nat Penton DC Quincy LA models what format Mike Harrison L doing what another competitor called orthopedic does besttalking John Fuqua District V transmitter holder Nat pokes some fun RC Aerobatics Contest Board member is- biased Pattern judges piece Rons tens patiently Plane Mikes Summit ii column month Read smile open sunroof case youre wondering Franks tongue firmly cheek wrote letter wonder knew Im frustrated nonfighter pilot Its long story Im sure nobody except long-suffering wife willing put up pilot option Advanced Air Force ROTC Purdue Univer sity Shortly after receiving ~ssion. Oh never mind also received letter Alicia Goode DC Quincy LA wrote After several years thousands dollars firm has developed automated judging device Pat tern Anyone common sense no Pattern experience can operate equipment order ensure accuracy has following adjustment knobs airplane engine pilots halo caller local quirks time day presently waiting patent assignments expect equipment widespread use Nats time person know De Quincy old leg-puller named Nat Penton return address envelope looks suspiciously like Nats Several years ago received letter Glenn Gressens Baton Rouge LA about proposed event called Radio Control Duration wrote back Glenn talked him phone about agreed good idea new type RC competition just got another letter him reported Radio Control Duration will 198 8-89 AMA nile book provisional event As Glenn envisions Radio Control Dura tion event can flown small fields sport RC fliers low weight slow speed models will provide inher ently safe event Aircraft processing contest management can handled minimum manpower promoted significant chal lenge serious competitors within frame work fan-type event So what Radio Control Duration Duration event obviously aircraft engine propeller limitations example max imum model wingspan 60 mini mum wing loading eight ounces per square foot projected wing area engine must stock Cox 049 cu reed-valve engine standard 8cc fuel tank furnished Black Widow Golden Bee engines propeller must two-blade wood plastic reinforcedcomposite type maximum diameter seven inches event goes like pilot has six attempts make three official flights Time starts airplane launched ends touches down touchdown must designated recovery area time flight zero maximum time allowed per flight 15 minutes Glenn reported competition held club Baton Rouge RC Club Most airplanes standard Glider kits power pods nose-mounted engines First place among 10 fliers 56 official flights went Gentle Lady power pod top three wmnningtimeswere4l09 3749and37l4out 4500 maximum officiating processing score-keeping handled Contest Director help four timers same crew officials could have handled least 20 competitors difficulty sounds like enjoyable relaxed form Continued page 135 4m going flying words conjure up images battles balky engines instead carefree days field youre using McDaniel R/C NiStarterTM light plug NiStartersTM heavy-duty nicad power will provide up 50 reliable quick starts charge features famous Head LockTM adapter brass reinforcing ring around crimped end really extends its life works sideways inverted information well NiStarter works just go local flying field may have wait NiStartersTM always flying McDaniel FIncorPorated] 12206 Guinevere Road enn Dale MD 20769 301464-2260 Telex 287901 McD-UR take hassle out hobby H obby Horn ~/140dL LA95SDS DAD MODEL 1991 BROOKLYN DODGER 56 Cabin"0NEWEST Retail $5295"INTRODUCTORY PRICE$3980 1938 Record Breaker 96 $6956 l939Zipper59$5356 1938 Kloud King 63 $9236 1991 Brigidier 56 $9976 1991 Super Ouaker 78 $7276 1999 So Long 50S3036 1936 Buccaneer 89 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 198 $75 16 1935 9iiss America 89 $7196 1991 Playboy Sr 89 $5116 1991 Playboy Jr 59$3116 1938 Powerhouse 89 $5356 1990 Sailplane 78 $6976 1938 Trenton Terror 72 $9076 1998 Ranger 96$3196 1939 Korda Wake 99 $1916 1939 Mercury 72 6 kits qualify SAM events FF & RIG feature highest quality machine cut & sanded parts Superior alt Competilion alt sheet strip wood wire & window material Plane orig PF models easily convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1809 Midway Model GNOME R/G Hand Launch Glider$2908 Jolly Models FLINGER R/C HLG 58 Span$2980 Midway Model FAST EDDIE Aerobatic /81 Elec$1908 Jolly Models ELECTRICUS Electric Glider 85s$3256 Leisure PLAYBOY SR 67 Gear OS Elect $3088 Astro ASTRO SPORT 37 Direct OS Elect $2210 Leisure WASP 37 Direct 85 Electrics$2258 Midway ULTRA MK IV 86 Geared 99 EP $3900 Midway PLYING QUAKER 89 96919 stroke $6976 9ks/Midway DENNY JR 72 Alum Cowel$6396 Oks/Midway BUZZARD BOMBSHELL 72$5196 FULL LINE OF ELECTRIC SYSTEMS 6 Parts Avail Sl1lllllIt S IIRIIIJLING Up $880 add $150 $801 $2890 add $225 $2881 $9180 add $390 $9501 $7009 add $350 over $7089 add $908 CA Addressees add 6% tax Send MO Visa/MC9Exp Check allow up 38 days CK clearance COD Exact Charges plus $110 Hdl Cash Only 64 Page CATALOGUE $200 PP/tat Class copy will sent free-when requestedwith order HOBBY HORN 15173 Moran St [Al PO Box 2212 Westminster Ca 92689 1719 8938311 [Aft Nra 719 8951203] September 1987 43 [DCO SKY DVI[ 65 Ignition Approved 90 Day WarraAty Twin Ball Bearing Crank Americas tlnest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red head--T&Ds replica Sky Devil 65 $279 less coil cond & plug Calif resIdents add 6% sales tsx ORDER DIRECT T&D RESEARCH ASSOCIAms 6371 El Cajon BId Suite 115 San Diego CA 92115 $1 FOR BROCHURE youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135
Edition: Model Aviation - 1987/09
Page Numbers: 42, 43, 135
Radio Control Sport Aerobatics Ron Van Putte THE NATS will over read Ill busily preparing Nats RC Pattern report publication hope everyone went Nats great time carried away pleasant memories However flew Expert class RC Pattern hope finished behind reported Competition News letter August issue thought wouldnt hurt mention RC Aerobatics Contest Board Final Vote resulted failure rule proposal combine Expert Master single class called Open people saying Open class would reality 1988-89 based Initial Vote However believe new proposal 1990-91 rule book featuring Open class beginners-level Turnaround class will offered will pass permitting dual route competitors Advanced class decide whether fly AMA pattern Turnaround pattern Pvc several letters about anhedral negative dihedral horizontal stabilizers Curare Tiporare writers want know what anhedral does airplanes dont have either dihedral no simple answer comes anhedral horizontal stabilizers Like design features involves compromises airplanes concerned same cornpromises Basically anhedral horizontal stabilizer results two effects first lowering equivalent horizontal tail anhedral causes horizontal tall act like flat tail would moved downward second effect complicated tends cause airplane sideslip roll direction opposite sideslip Thats contrary what would normally expect airplane So would want complicate airplane construction putting anhedral horizontal tall depends airplane example its good idea put horizontal tail wash wing Most wings have wake nasty horizontal tail operating tail should above below nasty wing wake wing wake directly behind wing wing deflects airflow down produc ing lift angle deflection proportional amount lift being produced other factors dictate horizontal tail should attached fuselage particular place would put tail wing wake anhedral tail can used drop horizontal tail below wing wake Now what about adverse rolling effect anhedral horizontal tail some airplanes used improve point rolls adding just enough adverse rolling moment negate positive-rolling effects some other design features airplane Obviously air planes have same design features dont need anhedral horizontal stabilizer fact some airplanes could use some dihedral horizontal tail suspect Hanno Prettner discovered amount anhedral horizontal tail Curare caused improved point rolls also suspect did because looks neat way read interesting story about anhedral tail McDonnellDouglas F4 Phantom II seems company test pilots fly F4 simulator report professional opinions airplanes flying characteristics angle anhedral horizontal tail changed software simulators computer anhedral angle production F4 horizontal stabilizer the pilots liked best bottom line isnt waited patiently letters Coriolis acceler ation fly-killing using conservation energy patience rewarded dual blast Frank MockEdwardsburg MI wrote am writing letter member Panama City Beach FL Edwardsburg MI chapters Save-a-Fly organizations Lam appalled sadistic method stunning flies Only frustrated non-fighter pilot could take such action May suggest sir purchase vehicle sunroof urge stun fly hits take following action Upon discovery fly proceed open sunroof increase speed 75 mph potential kinetic forces conjunction Coriolis acceleration will drive fly rear vehicle Now spin steering wheel right slam brakes Coriolis cyclonic vortex action will spin fly up out 42 Model Aviation Freddy Hagens Daytona Beach FL built Atlanta plane took picture Lisa Fernandes holding Plane has Rossi 61 engine uses K&B Superpoxy Mono Kote finish Site Wait Disney World popular item appear Rons column servo tester Ron mailed out hundreds schematics Al Shukie Mary Esther FL recently made using Radio Shack PC materials guy changed Nate Pattern Nat Penton DC Quincy LA models what format Mike Harrison L doing what another competitor called orthopedic does besttalking John Fuqua District V transmitter holder Nat pokes some fun RC Aerobatics Contest Board member is- biased Pattern judges piece Rons tens patiently Plane Mikes Summit ii column month Read smile open sunroof case youre wondering Franks tongue firmly cheek wrote letter wonder knew Im frustrated nonfighter pilot Its long story Im sure nobody except long-suffering wife willing put up pilot option Advanced Air Force ROTC Purdue Univer sity Shortly after receiving ~ssion. Oh never mind also received letter Alicia Goode DC Quincy LA wrote After several years thousands dollars firm has developed automated judging device Pat tern Anyone common sense no Pattern experience can operate equipment order ensure accuracy has following adjustment knobs airplane engine pilots halo caller local quirks time day presently waiting patent assignments expect equipment widespread use Nats time person know De Quincy old leg-puller named Nat Penton return address envelope looks suspiciously like Nats Several years ago received letter Glenn Gressens Baton Rouge LA about proposed event called Radio Control Duration wrote back Glenn talked him phone about agreed good idea new type RC competition just got another letter him reported Radio Control Duration will 198 8-89 AMA nile book provisional event As Glenn envisions Radio Control Dura tion event can flown small fields sport RC fliers low weight slow speed models will provide inher ently safe event Aircraft processing contest management can handled minimum manpower promoted significant chal lenge serious competitors within frame work fan-type event So what Radio Control Duration Duration event obviously aircraft engine propeller limitations example max imum model wingspan 60 mini mum wing loading eight ounces per square foot projected wing area engine must stock Cox 049 cu reed-valve engine standard 8cc fuel tank furnished Black Widow Golden Bee engines propeller must two-blade wood plastic reinforcedcomposite type maximum diameter seven inches event goes like pilot has six attempts make three official flights Time starts airplane launched ends touches down touchdown must designated recovery area time flight zero maximum time allowed per flight 15 minutes Glenn reported competition held club Baton Rouge RC Club Most airplanes standard Glider kits power pods nose-mounted engines First place among 10 fliers 56 official flights went Gentle Lady power pod top three wmnningtimeswere4l09 3749and37l4out 4500 maximum officiating processing score-keeping handled Contest Director help four timers same crew officials could have handled least 20 competitors difficulty sounds like enjoyable relaxed form Continued page 135 4m going flying words conjure up images battles balky engines instead carefree days field youre using McDaniel R/C NiStarterTM light plug NiStartersTM heavy-duty nicad power will provide up 50 reliable quick starts charge features famous Head LockTM adapter brass reinforcing ring around crimped end really extends its life works sideways inverted information well NiStarter works just go local flying field may have wait NiStartersTM always flying McDaniel FIncorPorated] 12206 Guinevere Road enn Dale MD 20769 301464-2260 Telex 287901 McD-UR take hassle out hobby H obby Horn ~/140dL LA95SDS DAD MODEL 1991 BROOKLYN DODGER 56 Cabin"0NEWEST Retail $5295"INTRODUCTORY PRICE$3980 1938 Record Breaker 96 $6956 l939Zipper59$5356 1938 Kloud King 63 $9236 1991 Brigidier 56 $9976 1991 Super Ouaker 78 $7276 1999 So Long 50S3036 1936 Buccaneer 89 $5996 1938 Clipper MKI 72$4156 1937 Dallaire 198 $75 16 1935 9iiss America 89 $7196 1991 Playboy Sr 89 $5116 1991 Playboy Jr 59$3116 1938 Powerhouse 89 $5356 1990 Sailplane 78 $6976 1938 Trenton Terror 72 $9076 1998 Ranger 96$3196 1939 Korda Wake 99 $1916 1939 Mercury 72 6 kits qualify SAM events FF & RIG feature highest quality machine cut & sanded parts Superior alt Competilion alt sheet strip wood wire & window material Plane orig PF models easily convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1809 Midway Model GNOME R/G Hand Launch Glider$2908 Jolly Models FLINGER R/C HLG 58 Span$2980 Midway Model FAST EDDIE Aerobatic /81 Elec$1908 Jolly Models ELECTRICUS Electric Glider 85s$3256 Leisure PLAYBOY SR 67 Gear OS Elect $3088 Astro ASTRO SPORT 37 Direct OS Elect $2210 Leisure WASP 37 Direct 85 Electrics$2258 Midway ULTRA MK IV 86 Geared 99 EP $3900 Midway PLYING QUAKER 89 96919 stroke $6976 9ks/Midway DENNY JR 72 Alum Cowel$6396 Oks/Midway BUZZARD BOMBSHELL 72$5196 FULL LINE OF ELECTRIC SYSTEMS 6 Parts Avail Sl1lllllIt S IIRIIIJLING Up $880 add $150 $801 $2890 add $225 $2881 $9180 add $390 $9501 $7009 add $350 over $7089 add $908 CA Addressees add 6% tax Send MO Visa/MC9Exp Check allow up 38 days CK clearance COD Exact Charges plus $110 Hdl Cash Only 64 Page CATALOGUE $200 PP/tat Class copy will sent free-when requestedwith order HOBBY HORN 15173 Moran St [Al PO Box 2212 Westminster Ca 92689 1719 8938311 [Aft Nra 719 8951203] September 1987 43 [DCO SKY DVI[ 65 Ignition Approved 90 Day WarraAty Twin Ball Bearing Crank Americas tlnest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red head--T&Ds replica Sky Devil 65 $279 less coil cond & plug Calif resIdents add 6% sales tsx ORDER DIRECT T&D RESEARCH ASSOCIAms 6371 El Cajon BId Suite 115 San Diego CA 92115 $1 FOR BROCHURE youre Youre Not. OPS GLOW PLUGS Are Available Local Hobby Shop 5sPeoPIeof Ceamftetd1m /mc4 9#cc PO Box26247 Orleans LA 70186 0-535-2568 grams Chuck Anderson wrote tell us has upgraded airfoil plot program added Macintosh list usable computers new program will plot NACA four- fivedigit Quabeck airfoil equations thus eliminating need enter coordinates airfoils Additional airfoils can plotted having rerun program scratch Owners earlier versions can upgrade new version returning old disk $5 Owners ear lier CM versions can upgrade C128 $10 get full details its best contact Chuck PO Box 305 Tullahoma TN 37388 phone 615 455-5788 Eddie Dumas announced Sailplane De sign Program now available IBM PCs compatible machines program written MS-DOS BASIC 20 requires doubledensity floppy disk drive optional Epson printer new program retains features original CM version plus enhancements 30 version CM program include updated Sailplane data files seven airfoil data files price $20 directly Eddie 3220 Boomerang Lane Knoxville TN 37931 phone 615 690-3180 Chuck says very impressed Eddies program Because reading column assume have interest model Soaring somewhere between passing passionate can decide rank yourself scale ten Wherever place yourself feel obligated bring up fit respect Great Scheme Things Model Aviation sport aviation big ones well mod els governed body based Paris called Federation Aeronautique Internationale FAI FAI has delegated supervision sport avi ation matters United States National Aeronautic Association NAAnothing NASA governmental agency NAA has turn delegated model aviation mat ters fine association American modelers brings magazine namely Academy Model Aeronautics AMA Now back Paris FAI has committee charged overseeing modeling activi ties around world Committee Interna tionale Aviation Modelisme ClAM ClAM establishes rules various types inter national model competition through sub committees Pattern F3A Soaring F3B Electrics F3E etc Youre probably thinking organiza tion swell what does have Lets jump back Washington accurately Reston VA home AMA officers administrators AMA reason same FAI NAA delegate certain responsibilities helping run various phases aeromodeling people closest knowledgeable about particular type model flying ie guys gals actually participate delegatedand dedicatedfolks known Special Interest Groups SIG SIG Pattern Control Line Pylon Racing Electric Free Flight yes Soaring has buildup let know have Soaring SIG its name National Soaring Society NSS Lets look what NSS about beginning Eastern Soaring League farsighted Sailplaners knew should nationwide association speak voice behalf great hobby/sport So NSS formed 1974 However dont believe anyone would claim NSS has great success getting signif icant percentage Sailplaners join probably two basic reasons First Sailplane enthusiasts tend independent thinkers prefer doing own way Second important Sailplaners probably havent seen need Soaring SIG feelings understandable recall what role SIG believe RC Soaring deserves prosper grow think youll agree NSS place invest some support may have heard some fliers say about NSS dont anything Im tell Us Yes talking about for-profit com pany strictly volunteer organiza tion Us rated interest Soaring anything higher 2 few paragraphs back Sailplaners need pitch hr help some thing can advise AMA Contest Board Soaring rules can have input ClAM F3B meetings rule-makings can run Nats Soaring event can assist National F3B Team can develop new programs contests activities lots things can get together critical mass Some may say cant afford dues honest consideration dues cheap compared investment us have hobby dues give excellent bimonthly journal Sailplane Some say dont agree what doing need hear opinions know what want Next month Ill print names addresses NSS District VPs Theyll very happy hear meantime please look NSS ad magazine Send appli cation Byron Blakeslee 3134 Winnebago Dr Se dalia CO 8035 RC Aerobatics/Van Putte Continued page 43 competition weekend fliers want try change pace details new event advance 1988-89 AMA rule book contact Glenn Gressens 10224 Kenlee Dr Baton Rouge LA 70815 Im sure hed appreciate SASE along request Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 45 ing circuit interrupt current flow caused fuse activate first place Thus fuse already hotsuch being heated current flowing through faulty contacts fuse holderthe actual circuit current needed cause fuse blow less fuse rating result fuses activat ing no good reason Given preceding have fuses seem wrongly activating maybe youve looking problem isnt check see fuse holder fuse normally hot touch Ive some could touchContinued page 136 September 1987 135