The North American X-15 did more than set records; it quietly redrew the map of what a piloted aircraft could survive at the edge of space. By pushing hypersonic flight to extremes that still stand ...
National Security Journal on MSN
At Mach 6.7 and 4,520 mph, the X-15 set the crewed aircraft speed record in 1967 — 59 years later, no one has flown faster
On October 3, 1967, U.S. Air Force pilot William “Pete” Knight flew the X-15A-2 to 4,520 miles per hour — Mach 6.7 — setting ...
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