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This week in flight test history: Yeager breaks sound barrier

Air Force photograph

At Edwards Air Force Base, Calif., on Oct. 14, 1947, on his ninth powered flightin the airplane, Capt. Charles E. Chuck Yeager piloted the Bell X-1 Glamorous   Glennis, named after his wife, to a speed of 699.4 mph at 43,000 feet (Mach 1.06), and became the first to exceed the speed of sound. This X-1 flight established that aircraft could be designed to exceed the previously deemed sound barrier.”

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