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10-September-2005, 01:20 PM
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NASA Scramjet Hits Mach 9.8
SUMMARY: The X-43A scramjet broke its own world record for air breathing engines on Tuesday, when it traveled at nearly 10 times the speed of sound. The prototype scramjet aircraft was dropped from a B-52 aircraft, and then boosted to Mach 4 by a Pegasus rocket. The aircraft detached from the rocket and then accelerated up to Mach 9.8 (11,265 kph or 7,000 mph). This flight was the last in a series of three test flights by NASA in the development of its Hyper-X program, which explores alternatives to rocket power for access to space.
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