National Security Journal on MSN
The Mach 9.6 X-43A ‘Hypersonic Scramjet’ Has a Message for the U.S. Air Force
Key Points and Summary – NASA’s X-43A wasn’t a paper study—it was a 12-foot, hydrogen-fueled experimental jet that proved an ...
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Boom Supersonic's XB-1 demonstrator jet became the first U.S.-made civilian supersonic jet to break the sound barrier. The independently funded XB-1 reached a speed of Mach 1.122, or about 750 mph, ...
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