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Although the official record for fastest piston-engined aeroplane in level flight was held by a Grumman F8F Bearcat, the Rare Bear, with a speed of 850.23 km/h (528.31 mph), the unofficial record for fastest piston-engined aeroplane in level flight is held by a British Hawker Sea Fury at 880 km/h (547 mph).
It took flight for the first time on 25 June 1964. It reached its maximum speed of 4,520 miles per hour (7,274 km/h) in October 1967 with pilot William "Pete" Knight of the U.S. Air Force in control. Five principal aircraft were used during the X-15 program: three X-15 planes and two modified "nonstandard" NB-52 bombers:
A total of 32 aircraft were built; 12 were lost in accidents, none to enemy action. [6] [7] In 1974, a pair of SR-71 flights set the records for highest sustained flight and quickest flight between London and New York. In 1976, it became the fastest airbreathing manned aircraft, previously held by its predecessor, the closely related Lockheed ...
The X-59 is the latest in a series of experimental planes which include the X-1, which in 1947 became the first manned aircraft to exceed the speed of sound, and the X-15, which still holds the ...
The X-15 program data was used in the planning of future aircraft and spacecraft designs. Flight 188 held the crewed winged spaceplane speed record till it was passed by STS-1 of the Space Shuttle Columbia on April 14, 1981. Flight 188 is still a speed record for a non-orbital aircraft in the atmosphere under a powered manned flight.
Its inaugural flight — 60 years ago in September 1964 — kicked off a golden era for supersonic aircraft. The plane would later achieve a speed of just over 2,000 miles per hour, nearly 50% ...
Aircraft speed records are based on true airspeed, rather than ground speed. HTV-2 (artist rendering), the fastest uncrewed aerial vehicle North American X-15 , the fastest piloted rocket-powered aircraft
The lead aircraft was ... the B-21 team had been steadily working up to the first flight of the lead aircraft, starting with the first power-up of the aircraft’s systems, and in September ...