NASA X-59 Reaches Mach 1.4 at Mission Altitude Written 15 June 2026

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NASA X-59 Reaches Mach 1.4 at Mission Altitude

NASA’s X-59 quiet supersonic research aircraft sits on the ramp at Lockheed Martin Skunk Works in Palmdale, California | Credit: NASA/Steve Freeman; Wikipedia; Public Domain

Aviation Week reports, “NASA’s X-59 Quesst low-boom supersonic demonstrator achieved Mach 1.4 at 55,000 ft. on June 12, representing the speed and altitude planned for flights over U.S. communities to measure the public response to reduced sonic booms.”
Full Story (Aviation Week)