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AAM-A-1 Firebird
The AAM-A-1 Firebird was an early American air-to-air missile, developed by the Ryan Aeronautical Company. The first air-to-air missile program developed for the United States Air Force, the Firebird was extensively tested in the late 1940s; although it proved successful in testing, it was soon obsolete due to the rapid advances in aircraft and missile technology at the time and did not enter production.
==Design and development==
The AAM-A-1 project began in 1946 with the awarding of a study contract, under the designation MX-799, to the Ryan Aeronautical Company for the development of a subsonic air-to-air missile, which would be used by interceptor aircraft for the destruction of enemy bombers.〔Parsch 2004〕 A contract for the development of the missile, designated AAM-A-1 Firebird, was awarded in 1947.〔
The AAM-A-1 Firebird was a two-stage weapon, fitted with cruciform wings and tailfins. Control was by differential motion of the wings; the tailfins were fixed.〔 The missile's fuselage was constructed from aluminum alloy, while the nosecone and control fins were molded from plastic.〔''Popular Science'', January 1950, p.144.〕 Firebird was fitted with a solid-fuel booster rocket providing initial thrust, before a liquid-fuel sustainer rocket ignited for a 15-second powered flight time.〔
Guidance was provided during midcourse flight by radio command guidance, with an operator in the launching aircraft transmitting corrections to the missile. Terminal guidance used active radar homing, with a small radar set being fitted in the nose of the missile,〔〔''Popular Science'', March 1952, p.155.〕 with the missile's warhead being detonated by a proximity fuse, a backup impact fuze also being fitted.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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