Prelude to Kiev

IN OLDEN DAYS life much simpler few guys would stand around watch pilots doing impromptu maneuvers Taperwing Wacos Ryan trainers would talk over decide flown best hadnt winner got trophy cash everyone else grumbled wasn t very precise way judging aerobatic contest best also wide open opportunity bias building up reputation pilot judges liked dis couraging newcomers long aero batic championships carried about much prestige professional wrestling titles very people lost sleep over show sport anyway Around 1960 things began change year first FAI World Aerobatic Championships Nine countries showed up Bratislava Czechoslovakia complete first true world honors though sport still very much European US though just barely Frank Price gone entirely own way Waco Texas 28-year-old Great Lakes Trainer Frank didnt very well local boys swept awards Russian finals reasons much political aeronautical Czechs won several reasons thorough knowledge na ture aerobatics competition Zlin Trener best competition airplane practiced weeks over contest site four seven judges Czechs out friendly judges would have won knew what to win did first World Championships began two four-minute compulsory sequen ces maneuvers top nine scorers end round two went finals repeated sequences flew five-minute free-style judging subjective undoubtedly biased favor Eastern European countries yet best pilots clearly won early days possible get along less-than-ideal judging scoring system competition Top Pilot Bob Lyjack puts Taperwing Waco through maneuver calls Centrifuge strictly air show stuff Above France two-seat trainer version CAP-20 acro batic machine equips French acro batic team CAP-la first its breed registered US Right Something very new Czechoslovakia prototype Zlin Z50-L may herald new day acrobatic power has 260-hp Ameri can Lycoming engine getting closer chances serious friction growing sport develop would have move di rection greater organization disci pline much displeasure preferred wide-open atmosphere solve problem came Spanish Count Jose Aresti experienced Bucker Jungmeister pilot unusually well organized thinker wasnt afraid large complex problems Out increas ing chaos created organized system lead aerobatics out dark ages open arena everyone could compete knowledge much chance win skill hard work would permit Aresti did inventing new lan guage everyone could understand regardless parents taught him home Moreover grow ing vocabulary aerobatic slang differs country country re placed series symbols example maneuver Americans call ham merhead stall hammerhead turn known British stall turn wing slide French renverse ment tombee daile Spanish caida de ala Russians povorot na vertikalts i gorke Imagine confusion interna tional meet people countries trying discuss simple maneuver perhaps realizing talking about same thing Thanks Aresti Aerocryptographic System hammerhead can drawn thusly few quick lines chalkboard pilots over world can point areas trouble cases quickly discover problems far less serious seemed room hopeless babble different tongues New ideas aplenty Hirth Acrostar de signed Switzerland built West Ger has extensive fiberglass structure interconnected controls Air shows make peoples nearts pound Big Ed Mahler flies knife-edge 295-hp PJ-295 Special smoke pourPrelude Kiev ing out wake second thing Aresti did group maneuvers few families competitions could based systema tic coverage funny things airplanes can rather helter-skelter ap proach makes look like aerobatics nothing lot flip-flops sky rhyme reason cata logued several thousand combinations maneuvers following groups Family ILine lines plus angles Vertical 450 climbs dives horizontal flight can added variety rolls Family 2Horizontal turns 900 1800 2700 3600 turns seen generally Sportsman competition Family 3Vertical turns currently use Family 4Spins Upright inverted flat spins Family 5 Hammerhead turns Family 6 Tail slides whip stalls Family 7 Loops Can round triang ular square six- eight-sided inside outside double figure-eight Family 8Rolls Slow barrel hesita tion snap around circle loop Family 9Half-loop plus half-roll Combinations include Immelmann split-S half-Cuban-eight casu ally called humpty-bump flush hook further systematize aerobatics relieve judges impossible task trying decide should give points hard maneuver done poorly easy done well Aresti assigned K-factor degree difficulty maneuver Thus 900 horizontal turn has K-factor inverted 3600 turn two slow rolls outside circle has K-factor 43 judge scoring maneuver 0-to10 scale perfect performance first would worth 10 points mediocre job flying second scored 5 would worth 215 points judges still key modern aerobatics though Aresti System has made lot easier fair currently qualified approach unpaid jobs dedication scores produce will repre sentative flying have seen other hand unqualified bored have chosen social political reasons sport will suffer because wrong pilots will get trophies Its constant battle keep judging abreast flying because flying improves steadily competition gets tougher more pilots get airplanes capable flying through difficult maneuvers Back before World War II few aerobatics contests no true aero batic airplanes least modern stand ards airplanes seen competition same Wacos Great Lakes Monocoupes used air shows could todays maneuvers though little airspace rarely same kind precision same true Europe British flew de Havilland Tiger Moths French flew Morane parasols Germans flew Bucker Jungmeisters Jungmanns flew mainly crowd After war picked up left off lots Stearman trainers add remaining pre-war stunt planes Canadians British chipped surplus deH Chipmunks French lot Belgiandesigned Stampe biplanes mid-1950s Czech oslovakian Zlin Treners Akrobats began appear large numbers designed modern aerobatics saw almost yearly improvements keep top Almost country Eastern Europe Zlins did lot Western pilots mark became standard others meas ured rival Europe Yak-18 modified Russian Air Force trainer Russians used As World Championships began 1960 Zlin top Czechs won 1960 Hungarians 1962 Spaniards flew share honors Russians 1964 1966 meet Moscow romp home town boys Yaks though great est splash made cute little Ameri can biplane called Pitts Special Now Pitts well known since Betty Skelton roamed air show circuit first 1946-48 few built designer Curtis Pitts Dean Case individ ual amateur builders unknown big-time competition until 1966 TWA Capt Bob Herendeen won US National Championships two-aileron S-lC Pitts same year Bob led US Team USSR convinced lot doubters airplane doesnt May1976 5 Pitts Special old design first having flown back 1943 also very new design prototype model S-iT introduced public late 1975 much better vertical performance will flown two members US Team Kiev have big good didnt come close winning Herendeen made world sit up take notice tiny two-winger modified trainer hut true aerobatic airplane rapidly growing popularity benefitting ex perience increasing collection pilots flying sport competi tion would soon become symbol American aerobatic supremacy As pressure competition rose brought forth specialized airplanes particular need ever greater vertical performance foremost minds pilots designers led directly second major version Pittsthe Type S-lS----with its power upped 180 hp wings having symmetrical airfoils inverted outside flight ailerons both upper lower wings faster rolling so-called round-wing Pitts bowed during 1968 World Championships East Germany Herendeen nailed down best finish American time third out 48 might have won except unfortunate lack dip lomatic relations between host country US would have placed East Germans embarrassing position won world gotten notice Pitts Special pilots could fly through maneuvers tighter quicker anything else action nimble little craft better suited fly ing aerobatic box Zlin Yak would years before others caught box rec tangular glob air maneuvers must flown excursions outside boundaries bring penalties Unlimited International compe tition box 1000 meters 3300 ft long 800 meters 2600 ft wide has ceiling 1000 meters floor 100 meters giving height 900 meters 2950 ft US contests lower-skill categories have higher floors safety Sportsman Intermediate pilots must stay above 1500 ft Advanced pilots must stay above 1000 ft Once Pitts began show its foreign rivals just good airplane can flick around box others began search ways well better some solution still modifications aging trainers others entirely new airplane still others simple method buying building own Pitts Specials potent main smoke system plus smoke bombs wingtips make Art Scholls Su per Chipmunk easy follow through complex maneuvers contest flying no-no latest thing American competitive aero batic equipment Leo Loudenslagers highly modified Stephens Acro Thanks new wing turtledeck beat 20 Pitte Nationals though admission American superiority first still interesting new airplane Hirth Acrostar designed Switzerland first built West Germany 1970 loaded novel ideas wings have fiberglass spars ribs very thick airfoil blunt leading edge control system adapted aeromodel techniques has interconnected elevator ailerons flaps relatively small airplane has potent 220-hp Franklin engine giving power loading good Eighth World Aerobatics Cham pionships held July 25-August 3 near Kiev Ukraine USSR Acrostars will Swiss West German Spanish teams Wider acceptance has held back airplanes stability problems manufacturers financial prob lems Still machine reckoned having mount 1974 European Champ 1975 runner-up As Pitts star rose west Zlin began set east horsepower clipped wings larger aile rons helped classic Zlin slipped farther farther behind Finally 1976 Championships will totally new Zlin Z-50L much cleaner air frame 260-hp Lycoming engine 56 Model Aviation Prelude Kiev KEY TO DIAGRAM OF AEROBATIC SEQUENCE 1 Four-point hesitation roll 450 climb 2 One-turn inverted spin inverted recovery 3 Two points four-point roll pushout inverted 4 Half roll 450 climb inverted normal flight 5 Outside diving snap roll inverted recovery 6 Outside-inside horizontal-eight inverted inverted 7 Half vertical climbing roll inverted inverted 8 One-and-one-half turn spin normal recovery 9 Three-quarter vertical roll recovering verted across box 10 Three-quarter diving snap roll inverted recovery 11 Stick-forward tail slide normal recovery 12 Four points eight-point vertical roll push-out inverted 13 Outside lmmelmann 14 3600 inverted turn three slow rolls outside 15 Half outside loop 16 Snap roll 450 dive 17 Hammerhead turn 18 Two points four-point vertical climbing roll KEY TO ARESTI SYMBOLS Start maneuver upright flight end Inverted outside flight t-- Slow roll 2/4 J zzi Two points four-point hesitation roll Four-point hesitation roll Inside snap-roll outside snap-roll Inside loop Outside loop Upright spin inverted spin Hammerhead turn 3600 turn four rolls outside THE ARESTI SYSTEM Known compulsory sequence 1976 World Aerobatics Championship 0 II ir214C v-j rH iK /%,\ % -AH -HI 0 3/4 4/8 81 1k S H CtyA j H May1976 57 4 J 1 / Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2W long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Exhaust Manifolds Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Exhaust Throttle Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown Boat Fuel Tank 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25d catalog of mufflers tools hardware accessories available Semco Prelude Kiev simpler fixed spring-steel landing gear Yet has power-to-weight ratio comparable Pitts Acrostar still has 28-ft wings will handi cap trying stay within confines box French have trying several years develop first-rate airplane own havent done very well organized last World Championships 1972 hoped win new CAP20 sophisticated development Piel Emeraude homebuilt air plane too little power too much bulk go flitting around box Pitts others Still twoplace CAPl0 trainer version became success French have proceeded refine design latest CAP20L has power less weight shorter wings could contender big mystery might guess Russians pushed big Yak18s around box years amazing success just much can done keep old airplane competitive now word out will replaced totally new Yak50 about almost nothing known line centuries-old Russian prac tice purely sporting machine being kept secret latest high-altitude spy plane face frantic develop ment would very foolish Ameri can designers rest laurels though standard Pitts S-lS prob ably better under-develop ed new ones Rather take chance being surprised however Curtis Pitts has come up new version popular biplane Type S-IT First seen 1975 US Nationals expected flown least two members US Team 76 foot greater length another 20 hp constant-speed propel ler lots small aerodynamic changes appears offer some real improvement particular has amazing ability execute complex vertical maneuver fly off top under full control Along five Pitts US Team two 5-15 light-weight S-IS two S-IT will Stephens Akro mono plane current US Champion Leo Loud enslager LOUD-en-Slog-er grace ful airplane combines power-to-weight Pitts pleasant-to-judge slim lines European machines isnt known yet Stephens better Pitts Loudenslager better Pitts pilots did beat 20 time must mean some thing proof pudding will come 10-day meet USSR Fifteen teams 3-5 men lesser number women will fly three sequences ma neuvers leaders will fly fourth sequences everyome will 1 Known-Compulsory nounced November 1975 2 Free pilot designs himself ac cordance rules governing variety over-all difficulty 3 Unknown-Com pulsory will revealed 24 hours before flown cannot practiced advance end flights top three scorers team will combined determine team scores Team Champion top one-third men top one-half women will fly Four-Minute Free-Style Sequence Aresti Catalog thrown out such uncontrolled maneuvers lo mcevak may flown wide-open demonstration pilots imagination creativity end Mens Womens Individual World Champ ions will determined 1972 Championship Team American Mens World Champion Charlie Hillard Ft Worth Tex Womens World Champion Mary Gaffaney Miami Fla will take 200 flights under severe men tal physical pressure heart Soviet Union determine Yanks can repeat Aerobatic Team US Aerobatic Team stand chance winning 1976 World Championships must first get get six pilots 10 support persons six airplanes USA small air field outside Kiev will take close $ 100000 addition priceless hard work hard work can counted money will convert po tential victory quite another matter lot European Teams get heavy government support US Team entirely its own have pilots talented experi enced world have airplanes proven winners have training selection system has brought us top would shame stayed west side Atlantic others flying championships want yourpart excit ing effort send contributions Aerobatic Club America PO Box 401 Roanoke Texas 76262 58 Model Aviation Flying Near Airports Careful Free Flight Radio Control flying near airports situation might involve possibility models being vicinity full-scale aircraft operations must avoidedor conducted eliminate dangerous situations Models should flown proximity full-scale aircraft operations unless flyer has someone else him sole purpose watching full-scale aircraft supervising flying prevent accident possibilities

IN OLDEN DAYS life much simpler few guys would stand around watch pilots doing impromptu maneuvers Taperwing Wacos Ryan trainers would talk over decide flown best hadnt winner got trophy cash everyone else grumbled wasn t very precise way judging aerobatic contest best also wide open opportunity bias building up reputation pilot judges liked dis couraging newcomers long aero batic championships carried about much prestige professional wrestling titles very people lost sleep over show sport anyway Around 1960 things began change year first FAI World Aerobatic Championships Nine countries showed up Bratislava Czechoslovakia complete first true world honors though sport still very much European US though just barely Frank Price gone entirely own way Waco Texas 28-year-old Great Lakes Trainer Frank didnt very well local boys swept awards Russian finals reasons much political aeronautical Czechs won several reasons thorough knowledge na ture aerobatics competition Zlin Trener best competition airplane practiced weeks over contest site four seven judges Czechs out friendly judges would have won knew what to win did first World Championships began two four-minute compulsory sequen ces maneuvers top nine scorers end round two went finals repeated sequences flew five-minute free-style judging subjective undoubtedly biased favor Eastern European countries yet best pilots clearly won early days possible get along less-than-ideal judging scoring system competition Top Pilot Bob Lyjack puts Taperwing Waco through maneuver calls Centrifuge strictly air show stuff Above France two-seat trainer version CAP-20 acro batic machine equips French acro batic team CAP-la first its breed registered US Right Something very new Czechoslovakia prototype Zlin Z50-L may herald new day acrobatic power has 260-hp Ameri can Lycoming engine getting closer chances serious friction growing sport develop would have move di rection greater organization disci pline much displeasure preferred wide-open atmosphere solve problem came Spanish Count Jose Aresti experienced Bucker Jungmeister pilot unusually well organized thinker wasnt afraid large complex problems Out increas ing chaos created organized system lead aerobatics out dark ages open arena everyone could compete knowledge much chance win skill hard work would permit Aresti did inventing new lan guage everyone could understand regardless parents taught him home Moreover grow ing vocabulary aerobatic slang differs country country re placed series symbols example maneuver Americans call ham merhead stall hammerhead turn known British stall turn wing slide French renverse ment tombee daile Spanish caida de ala Russians povorot na vertikalts i gorke Imagine confusion interna tional meet people countries trying discuss simple maneuver perhaps realizing talking about same thing Thanks Aresti Aerocryptographic System hammerhead can drawn thusly few quick lines chalkboard pilots over world can point areas trouble cases quickly discover problems far less serious seemed room hopeless babble different tongues New ideas aplenty Hirth Acrostar de signed Switzerland built West Ger has extensive fiberglass structure interconnected controls Air shows make peoples nearts pound Big Ed Mahler flies knife-edge 295-hp PJ-295 Special smoke pourPrelude Kiev ing out wake second thing Aresti did group maneuvers few families competitions could based systema tic coverage funny things airplanes can rather helter-skelter ap proach makes look like aerobatics nothing lot flip-flops sky rhyme reason cata logued several thousand combinations maneuvers following groups Family ILine lines plus angles Vertical 450 climbs dives horizontal flight can added variety rolls Family 2Horizontal turns 900 1800 2700 3600 turns seen generally Sportsman competition Family 3Vertical turns currently use Family 4Spins Upright inverted flat spins Family 5 Hammerhead turns Family 6 Tail slides whip stalls Family 7 Loops Can round triang ular square six- eight-sided inside outside double figure-eight Family 8Rolls Slow barrel hesita tion snap around circle loop Family 9Half-loop plus half-roll Combinations include Immelmann split-S half-Cuban-eight casu ally called humpty-bump flush hook further systematize aerobatics relieve judges impossible task trying decide should give points hard maneuver done poorly easy done well Aresti assigned K-factor degree difficulty maneuver Thus 900 horizontal turn has K-factor inverted 3600 turn two slow rolls outside circle has K-factor 43 judge scoring maneuver 0-to10 scale perfect performance first would worth 10 points mediocre job flying second scored 5 would worth 215 points judges still key modern aerobatics though Aresti System has made lot easier fair currently qualified approach unpaid jobs dedication scores produce will repre sentative flying have seen other hand unqualified bored have chosen social political reasons sport will suffer because wrong pilots will get trophies Its constant battle keep judging abreast flying because flying improves steadily competition gets tougher more pilots get airplanes capable flying through difficult maneuvers Back before World War II few aerobatics contests no true aero batic airplanes least modern stand ards airplanes seen competition same Wacos Great Lakes Monocoupes used air shows could todays maneuvers though little airspace rarely same kind precision same true Europe British flew de Havilland Tiger Moths French flew Morane parasols Germans flew Bucker Jungmeisters Jungmanns flew mainly crowd After war picked up left off lots Stearman trainers add remaining pre-war stunt planes Canadians British chipped surplus deH Chipmunks French lot Belgiandesigned Stampe biplanes mid-1950s Czech oslovakian Zlin Treners Akrobats began appear large numbers designed modern aerobatics saw almost yearly improvements keep top Almost country Eastern Europe Zlins did lot Western pilots mark became standard others meas ured rival Europe Yak-18 modified Russian Air Force trainer Russians used As World Championships began 1960 Zlin top Czechs won 1960 Hungarians 1962 Spaniards flew share honors Russians 1964 1966 meet Moscow romp home town boys Yaks though great est splash made cute little Ameri can biplane called Pitts Special Now Pitts well known since Betty Skelton roamed air show circuit first 1946-48 few built designer Curtis Pitts Dean Case individ ual amateur builders unknown big-time competition until 1966 TWA Capt Bob Herendeen won US National Championships two-aileron S-lC Pitts same year Bob led US Team USSR convinced lot doubters airplane doesnt May1976 5 Pitts Special old design first having flown back 1943 also very new design prototype model S-iT introduced public late 1975 much better vertical performance will flown two members US Team Kiev have big good didnt come close winning Herendeen made world sit up take notice tiny two-winger modified trainer hut true aerobatic airplane rapidly growing popularity benefitting ex perience increasing collection pilots flying sport competi tion would soon become symbol American aerobatic supremacy As pressure competition rose brought forth specialized airplanes particular need ever greater vertical performance foremost minds pilots designers led directly second major version Pittsthe Type S-lS----with its power upped 180 hp wings having symmetrical airfoils inverted outside flight ailerons both upper lower wings faster rolling so-called round-wing Pitts bowed during 1968 World Championships East Germany Herendeen nailed down best finish American time third out 48 might have won except unfortunate lack dip lomatic relations between host country US would have placed East Germans embarrassing position won world gotten notice Pitts Special pilots could fly through maneuvers tighter quicker anything else action nimble little craft better suited fly ing aerobatic box Zlin Yak would years before others caught box rec tangular glob air maneuvers must flown excursions outside boundaries bring penalties Unlimited International compe tition box 1000 meters 3300 ft long 800 meters 2600 ft wide has ceiling 1000 meters floor 100 meters giving height 900 meters 2950 ft US contests lower-skill categories have higher floors safety Sportsman Intermediate pilots must stay above 1500 ft Advanced pilots must stay above 1000 ft Once Pitts began show its foreign rivals just good airplane can flick around box others began search ways well better some solution still modifications aging trainers others entirely new airplane still others simple method buying building own Pitts Specials potent main smoke system plus smoke bombs wingtips make Art Scholls Su per Chipmunk easy follow through complex maneuvers contest flying no-no latest thing American competitive aero batic equipment Leo Loudenslagers highly modified Stephens Acro Thanks new wing turtledeck beat 20 Pitte Nationals though admission American superiority first still interesting new airplane Hirth Acrostar designed Switzerland first built West Germany 1970 loaded novel ideas wings have fiberglass spars ribs very thick airfoil blunt leading edge control system adapted aeromodel techniques has interconnected elevator ailerons flaps relatively small airplane has potent 220-hp Franklin engine giving power loading good Eighth World Aerobatics Cham pionships held July 25-August 3 near Kiev Ukraine USSR Acrostars will Swiss West German Spanish teams Wider acceptance has held back airplanes stability problems manufacturers financial prob lems Still machine reckoned having mount 1974 European Champ 1975 runner-up As Pitts star rose west Zlin began set east horsepower clipped wings larger aile rons helped classic Zlin slipped farther farther behind Finally 1976 Championships will totally new Zlin Z-50L much cleaner air frame 260-hp Lycoming engine 56 Model Aviation Prelude Kiev KEY TO DIAGRAM OF AEROBATIC SEQUENCE 1 Four-point hesitation roll 450 climb 2 One-turn inverted spin inverted recovery 3 Two points four-point roll pushout inverted 4 Half roll 450 climb inverted normal flight 5 Outside diving snap roll inverted recovery 6 Outside-inside horizontal-eight inverted inverted 7 Half vertical climbing roll inverted inverted 8 One-and-one-half turn spin normal recovery 9 Three-quarter vertical roll recovering verted across box 10 Three-quarter diving snap roll inverted recovery 11 Stick-forward tail slide normal recovery 12 Four points eight-point vertical roll push-out inverted 13 Outside lmmelmann 14 3600 inverted turn three slow rolls outside 15 Half outside loop 16 Snap roll 450 dive 17 Hammerhead turn 18 Two points four-point vertical climbing roll KEY TO ARESTI SYMBOLS Start maneuver upright flight end Inverted outside flight t-- Slow roll 2/4 J zzi Two points four-point hesitation roll Four-point hesitation roll Inside snap-roll outside snap-roll Inside loop Outside loop Upright spin inverted spin Hammerhead turn 3600 turn four rolls outside THE ARESTI SYSTEM Known compulsory sequence 1976 World Aerobatics Championship 0 II ir214C v-j rH iK /%,\ % -AH -HI 0 3/4 4/8 81 1k S H CtyA j H May1976 57 4 J 1 / Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2W long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Exhaust Manifolds Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Exhaust Throttle Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown Boat Fuel Tank 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25d catalog of mufflers tools hardware accessories available Semco Prelude Kiev simpler fixed spring-steel landing gear Yet has power-to-weight ratio comparable Pitts Acrostar still has 28-ft wings will handi cap trying stay within confines box French have trying several years develop first-rate airplane own havent done very well organized last World Championships 1972 hoped win new CAP20 sophisticated development Piel Emeraude homebuilt air plane too little power too much bulk go flitting around box Pitts others Still twoplace CAPl0 trainer version became success French have proceeded refine design latest CAP20L has power less weight shorter wings could contender big mystery might guess Russians pushed big Yak18s around box years amazing success just much can done keep old airplane competitive now word out will replaced totally new Yak50 about almost nothing known line centuries-old Russian prac tice purely sporting machine being kept secret latest high-altitude spy plane face frantic develop ment would very foolish Ameri can designers rest laurels though standard Pitts S-lS prob ably better under-develop ed new ones Rather take chance being surprised however Curtis Pitts has come up new version popular biplane Type S-IT First seen 1975 US Nationals expected flown least two members US Team 76 foot greater length another 20 hp constant-speed propel ler lots small aerodynamic changes appears offer some real improvement particular has amazing ability execute complex vertical maneuver fly off top under full control Along five Pitts US Team two 5-15 light-weight S-IS two S-IT will Stephens Akro mono plane current US Champion Leo Loud enslager LOUD-en-Slog-er grace ful airplane combines power-to-weight Pitts pleasant-to-judge slim lines European machines isnt known yet Stephens better Pitts Loudenslager better Pitts pilots did beat 20 time must mean some thing proof pudding will come 10-day meet USSR Fifteen teams 3-5 men lesser number women will fly three sequences ma neuvers leaders will fly fourth sequences everyome will 1 Known-Compulsory nounced November 1975 2 Free pilot designs himself ac cordance rules governing variety over-all difficulty 3 Unknown-Com pulsory will revealed 24 hours before flown cannot practiced advance end flights top three scorers team will combined determine team scores Team Champion top one-third men top one-half women will fly Four-Minute Free-Style Sequence Aresti Catalog thrown out such uncontrolled maneuvers lo mcevak may flown wide-open demonstration pilots imagination creativity end Mens Womens Individual World Champ ions will determined 1972 Championship Team American Mens World Champion Charlie Hillard Ft Worth Tex Womens World Champion Mary Gaffaney Miami Fla will take 200 flights under severe men tal physical pressure heart Soviet Union determine Yanks can repeat Aerobatic Team US Aerobatic Team stand chance winning 1976 World Championships must first get get six pilots 10 support persons six airplanes USA small air field outside Kiev will take close $ 100000 addition priceless hard work hard work can counted money will convert po tential victory quite another matter lot European Teams get heavy government support US Team entirely its own have pilots talented experi enced world have airplanes proven winners have training selection system has brought us top would shame stayed west side Atlantic others flying championships want yourpart excit ing effort send contributions Aerobatic Club America PO Box 401 Roanoke Texas 76262 58 Model Aviation Flying Near Airports Careful Free Flight Radio Control flying near airports situation might involve possibility models being vicinity full-scale aircraft operations must avoidedor conducted eliminate dangerous situations Models should flown proximity full-scale aircraft operations unless flyer has someone else him sole purpose watching full-scale aircraft supervising flying prevent accident possibilities