65 Years Ago: First Factory Rollout of the X-15 Hypersonic ... - NASA
https://www.nasa.gov/history/65-years-ago-first-factory-rollout-of-the-x-15-hypersonic-rocket-plane/
WEBOct 13, 2023 · On Oct. 15, 1958, the first X-15 hypersonic rocket-powered aircraft rolled out of its factory. A joint project among NASA, the U.S. Air Force, and the U.S. Navy, the X-15 greatly expanded our knowledge of flight at speeds exceeding Mach 6 and altitudes above 250,000 feet.
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