Key Points and Summary: NASA’s X-43A hypersonic research aircraft made history in 2004 by reaching Mach 9.64, or 6,363 mph, at an altitude of 110,000 feet.-Powered by a cutting-edge scramjet engine, the X-43A demonstrated the efficiency of air-breathing propulsion for hypersonic flight.-Developed as part of NASA’s “better, faster, cheaper” program, the X-43A was […].
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