Pictures: Breaking the Sound Barrier
Mach Speed and More
Mach Speed and More
Mach Speed and More
Chuck Yeager and Bell X-1 Supersonic Plane
USAF Capt. Charles E. Yeager (shown standing with the Bell X-1 supersonic rocket plane) became the first man to fly faster than the speed of sound in level flight on Oct. 14, 1947.
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