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Tupolev Tu-28
The Tupolev Tu-28 (NATO reporting name Fiddler) was a long-range interceptor aircraft introduced by the Soviet Union in the 1960s. The official designation was Tu-128,〔 but this designation was less commonly used in the West. It was the largest and heaviest fighter ever in service.〔
==Background==
In the 1950s, the Soviet Union sought the means to defend against the nuclear-armed American bombers possibly penetrating its borders (especially its long and vulnerable northern border). Contemporary interceptors, even the Yakovlev Yak-28P, were able to cover a radius of a few hundred kilometers;〔 the newly developed surface-to-air missiles had even shorter range.〔 Considering both, the sheer numbers required to defend a 5,000 km air front were economically impossible to maintain. This left the Soviet Union able to provide a modern air defense only for selected valuable areas.〔 The PVO decided to cover the entire territory, but with a more loose defense. In 1955 it placed a requirement for a large area-defense interceptor, that would achieve it with sparse airbases. The PVO requirement called for a supersonic aircraft with enormous fuel tanks for both a good patrol time and a long range, a capable radar, and the most powerful air-to-air missiles possible. The first attempt, although an unsuccessful one, was a 30-tonne Lavochkin La-250 prototype,〔 the last of the Lavochkin design bureau's aircraft.
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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