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Developed for the United States Army Air Corpsthe P had distinctive twin booms and a central nacelle containing the cockpit and armament. Allied propaganda claimed it had been nicknamed the fork-tailed devil German : der Gabelschwanz-Teufel by the Luftwaffe and "two planes, one pilot" by the Japanese.

MacDonald 27 victories. Unusually for a fighter of this time, the exhaust was muffled by the turbo-superchargersmaking the P's operation relatively quiet. Kelsey and Gordon P. Saville for a twin-engine, high-altitude "interceptor" having "the tactical mission of interception and attack of hostile aircraft at high altitude.

A Fighter And An Escort Changes The Course Of World War II

The unbuilt Vultee XP was designed to the same requirement, but was not advanced enough to merit further investigation. A similar single-engine proposal was issued at the same time, Circular Proposal X, in response to which the Bell P Airacobra was designed. The Lockheed design team, under the direction of Hall Hibbard and Clarence "Kelly" Johnsonconsidered a range https://amazonia.fiocruz.br/scdp/blog/work-experience-programme/scrooge-character-analysis.php twin-engine configurations, including both engines in a central fuselage with push—pull propellers.

The eventual configuration was rare in terms of contemporary fighter aircraft design, with the preceding Fokker G.

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The Lockheed team chose twin booms to accommodate the tail assembly, engines, and turbo-superchargers, with a central nacelle for the pilot and armament. The XP gondola mockup was designed to mount two.

Clustering all the armament in the nose was unusual in U. Nose-mounted guns did not suffer from having their useful ranges limited by pattern convergence, meaning that good pilots could shoot much farther.

The P was the first American fighter to make extensive use of stainless steel and smooth, flush-riveted butt-jointed aluminum skin panels. Kelsey then proposed a speed dash to Wright Field on 11 February to relocate the aircraft for further testing. The flight set a speed record by flying from California to New York in seven hours and two minutes, not counting two refueling stops. Bundled up against the cold, Arnold congratulated Kelsey at Wright Field during his final refueling stop, and said, "don't spare the horses" on the next leg.

Lockheed's Chief test pilot Tony LeVier angrily characterized the accident as an unnecessary publicity stunt, [43] but according to Kelsey, the loss of the prototype, rather than hampering the program, sped the process by cutting short the initial test series. Manufacture of YPs fell behind schedule, at least partly because of the Products Consumer Apple Behavior On for mass-production suitability making them substantially different in construction from the prototype. Another factor was the sudden required expansion of Lockheed's facility in Burbanktaking it from a specialized civilian firm dealing with small A Fighter And An Escort Changes The to a large government defense contractor making VenturasHarpoonsLodestarsHudsonsand designing the Constellation for TWA. The first YP was not completed until Septemberwith its maiden flight on 17 September.

The YPs were substantially redesigned and differed greatly in detail from the hand-built XP They were lighter and included changes in engine fit. The propeller rotation was reversed, with the blades spinning outward away from the cockpit at the top of their arc, rather than inward as before.

This improved the aircraft's stability as a gunnery platform. Test flights revealed problems initially believed to be tail flutter.

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Once caught in this dive, the fighter would enter a high-speed compressibility stall and the controls would lock up, leaving the pilot no option but to bail out if possible or remain with the aircraft until it got down to denser air, where he might have a chance to pull out.

By Novembermany of the initial assembly-line challenges had been met, which freed up time for the engineering team to tackle the problem of frozen controls in a dive. Lockheed had a few ideas for tests that would help them find an answer.]