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Boeing B-47 Stratojet
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The Boeing B-47 Stratojet (company Model 450) was a long range, six-engine, turbojet-powered strategic bomber designed to fly at high subsonic speed and at high altitude to avoid enemy interceptor aircraft. The B-47's primary mission was to drop nuclear bombs on the Soviet Union. With its engines carried in nacelles under the swept wing, the B-47 was a major innovation in post-World War II combat jet design, and contributed to the development of modern jet airliners.
The B-47 entered service with the United States Air Force's Strategic Air Command (SAC) in 1951. It never saw combat as a bomber, but was a mainstay of SAC's bomber strength during the late 1950s and early 1960s, and remained in use as a bomber until 1965. It was also adapted to a number of other missions, including photographic reconnaissance, electronic intelligence and weather reconnaissance, remaining in service as a reconnaissance aircraft until 1969 and as a testbed until 1977.
==Development==
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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