NASA's Mach 9.6 X-43A 'Hypersonic Scramjet' Is Still An Engineering Marvel

NASA's experimental X-43A didn't have a pilot and couldn't fly independently, but its blisteringly high speeds showed that ...
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10 Seconds at Mach 9.68: The Brief, Glorious Life of the X-43A

A, the unmanned experimental aircraft that holds the world record for the fastest flight by an air-breathing jet. -As part of ...