Sukhoi Su-15 (1949)

Sukhoi Su-15 (1949)

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Sukhoi Su-15 (1949)

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The Sukhoi Su-15 (Aircraft P) was a prototype Soviet all-weather interceptor which never reached production. The name was later reused for an entirely different 1960s interceptor, see Sukhoi Su-15.

Development

The Su-15 was an early attempt at an all-weather jet-powered interceptor. Its development was ordered by the Soviet government in March 1947, with the approval of the Sukhoi Design Bureau’s preliminary midwing design featuring a pressurized cabin, radar, swept wings and tandem engines, similar to that already attemped by the Lavochkin L-200 and Mikoyan-Gurevich I-320. Per TsAGI, the sweep of the wings was selected to be 35 degrees. The first prototype was completed on 25 October 1948 — only four months after production had started.The Su-15 first flew on 11 January 1949 piloted by Sukhoi test pilot G. M. Shiyanov. In testing, Su-15 reached 1032 km/h (557 knots, 641 mph; Mach 0.888) at and 985 km/h (532 knots, 612 mph; Mach 0.926) at , but experienced excess vibration at speeds in excess of Mach 0.87.During 39th flight on 3 June 1949, the aircraft developed severe vibration, forcing the test pilot S.N. Anokhin to eject. The exact cause of the accident was never determined. At the time of the accident, 90% of the flight test program had been completed, over the course of 42 flights with a total flight time of 20 hours, 15 minutes.The...
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