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Tupolev Tu-73
The Tupolev Tu-73 was a Soviet trijet medium bomber of the late 1940s. It lost out to the Ilyushin Il-28 'Beagle'.
==Development==
The Tupolev Tu-73 had its genesis in 1947 after the Soviet Air Force had deep reservations about whether the Tupolev Design Bureau's proposed Tu-72 naval bomber would achieve sufficient performance with Rolls-Royce Nene jet engines. To address those concerns, Tupolev decided to develop a variant of the Tu-72 with a Rolls-Royce Derwent jet engine buried in the rear fuselage, the 73.〔Duffy, Paul; A. I. Kandalov. Tupolev: the man and his aircraft. SAE.〕
The Tupolev Tu-73 conducted its first flight on December 29, 1947. Test results were stellar, with a top speed of 870km/h, a range of 2,800km, and a service ceiling of 11,500m. Consequently, the Soviet Air Force gave Tupolev the green light to develop a reconnaissance version of the Tu-73 with Soviet-built Nene and Derwent engines, the Tu-78. However, in early 1949, the Soviet Council of Ministers ordered Tupolev to cease further development of the Tu-73 and Tu-78.〔Gordon, Yefim; Rigamant, Vladimir (2005). OKB Tupolev: A History of the Design Bureau and its Aircraft. Hinckley, England: Midland Publishing. ISBN 1-85780-214-4.〕
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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