Transonic Wing
A swept wing is a wing angled either backward or occasionally forward from its root rather than perpendicular to the fuselage. Swept wings have been flown since the pioneer days of aviation. Wing sweep at high speeds was first investigated in Germany as early as 1935 by Albert Betz and Adolph Busemann, finding application just before the end of the Second World War. It has the effect of delaying the shock waves and accompanying aerodynamic drag rise caused by fluid compressibility near the speed of sound, improving performance. Swept wings are therefore almost always used on jet aircraft designed to fly at these speeds. The term "swept wing" is normally used to mean "swept back", but variants include forward sweep, variable sweep wings and oblique wings in which one side sweeps forward and the other back. The delta wing is also aerodynamically a form of swept wing. Reasons for sweep There are three main reasons for sweeping a wing: 1. to arrange the center of gravity of the a ...
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Sukhoi Su-47 In Formation, 2005
The JSC Sukhoi Company (, ) is a Russian aircraft manufacturer headquartered in Begovoy District, Northern Administrative Okrug, Moscow, that designs both civilian and military aircraft. Sukhoi was founded in the Soviet Union by Pavel Sukhoi in 1939 as the Sukhoi Design Bureau (OKB-51, OKB, design office prefix Su), and survived the dissolution of the Soviet Union. In February 2006, the Russian government merged Sukhoi with Mikoyan, Ilyushin, Irkut (aircraft manufacturer), Irkut, Tupolev, and Yakovlev as a new company named United Aircraft Corporation.Russian Aircraft Industry Seeks Revival Through Merger
." ''The New York Times.'' February 22, 2006.

History

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