X-1 (aircraft)/Definition: Difference between revisions
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imported>Howard C. Berkowitz (New page: <noinclude>{{Subpages}}</noinclude> Making the flight in 1947, the aircraft to exceed the speed of sound.) |
imported>Howard C. Berkowitz No edit summary |
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A rocket powered aircraft which, in 1947, was the first aircraft to exceed the speed of sound in controlled level flight. | |||
Latest revision as of 18:50, 31 October 2008
A rocket powered aircraft which, in 1947, was the first aircraft to exceed the speed of sound in controlled level flight.