Courtesy: NASA Langley Research Center, Dryden Flight Research Center NASA's X-43A Scramjet Breaks Speed RELEASE: 04-59 NASA's X-43A research vehicle screamed into the record books again Tuesday, demonstrating an air-breathing engine can fly at nearly 10 times the speed of sound. Preliminary data from the scramjet-powered research vehicle show its revolutionary engine worked successfully at nearly Mach 9.8, or 7,000 mph, as it flew at about 110,000 feet. The high-risk, high-
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