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 ...
Morning Overview on MSN
NASA’s X-59 quiet supersonic jet completes first wheels-up flight
On April 3, 2026, NASA’s X-59 experimental aircraft tucked its landing gear into the fuselage and flew clean for the first time, completing a 90-minute test flight that reached 20,000 feet and a top ...
As its team prepared for second flight, NASA’s X-59 quiet supersonic aircraft underwent engine run testing on March 12, at NASA’s Armstrong Flight Research Center in Edwards, California. Sources | ...
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