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__NOTOC__ The Il-54 was a transonic bomber developed in the USSR in the 1950s. Only two examples were built before the project was abandoned. The Council of Ministers issued a directive to OKB-115, for a transonic bomber prototype to be submitted for State Acceptance Trials in July 1954. The design of this bomber went through several stages before settling on the final configuration. The Il-54, as built, had a very thin 45 degree swept wing with anhedral, which was shoulder mounted on the fuselage. The Lyulka AL-7 engines were housed in slim, pylon mounted, pods at approximately 1/3 span. Because the wings and engine nacelles were too small to house a conventional undercarriage, the Il-54 used a bicycle undercarriage arrangement, with nose and main gear units on the centreline of the aircraft, at each end of the bomb bay. This arrangement meant a conventional rotating take-off would be impossible. To enable the Il-54 to take-off, in a reasonable runway length, the main gear knelt and the nose gear extended to give the ideal angle of incidence for take-off (10 degrees). Flight trials of the Il-54 commenced in April 1955 with test pilot Vladimir Kokkinaki at the helm. Difficult handling during the landing run was rectified by modifying the undercarriage. Production of the Il-54 was not proceeded with, due to competition from Yak-25 derivatives, and the belief that manned aircraft would soon be replaced by missiles. Booked to fly in the flypast at Tushino in 1956, the Il-54 was dropped from the flying programme. The aircraft was then shown to a US Military Delegation at Kubinka. The Delegation were told that the Il-54 was the Il-149 as part of a deception programme. As a result the Il-54 was given far more importance than it actually warranted, and was assigned the NATO reporting name ("Blowlamp") after it had ceased flying. ==Variants== * Il-54T - Torpedo Bomber (project) * Il-54U - Trainer (project) * Il-54R - Photo-Reconnaissance (project) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ilyushin Il-54」の詳細全文を読む スポンサード リンク
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