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SSM-A-5 Boojum
The XSSM-A-5 Boojum, also known by the project number MX-775B, was a supersonic cruise missile developed by the Northrop Corporation for the United States Air Force in the late 1940s. Intended to deliver a nuclear warhead over intercontinental range, it was determined to be too ambitious a project given technical difficulties with the SM-62 Snark which it was to follow on from, and was canceled in 1951.
==Development==
As part of a United States Army Air Forces effort to develop guided missiles for the delivery of nuclear weapons, the Northrop Corporation was awarded a development contract in March 1946 for the design of two long-range cruise missiles. Designated MX-775, the contract called for a subsonic missile, the MX-775A, later designated SSM-A-3 Snark; and a more advanced supersonic missile, MX-775B, which in 1947 was given the name SSM-A-5 Boojum,〔Parsch 2007〕 Northrop naming the missiles after characters from the works of Lewis Carroll.〔Collins 2007, p.26.〕
Given the company designation of N-25B, the design of the Boojum took place over the next several years, and produced a number of variations on the concept. The finalized design called for a long, slender missile, fitted with delta wings, and powered by a pair of General Electric turbojet engines, mounted in nacelles near the tips of the wing.〔
The missile was intended to be launched utilizing a rocket sled; air-launch from a Convair B-36 heavy bomber was an alternative that was studied.〔 The missile would climb at subsonic speeds to its operating altitude, then conduct a supersonic dash to the target area, being guided using a celestial navigation system.〔 A "slipper" type drop tank would be jettisoned halfway through the flight.〔Werrell 1985, p.141.〕 The Boojum was intended to be capable of carrying a warhead weighing up to over a range between .〔Polmar and Norris 2009, p.178.〕
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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