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Boom Supersonic's XB-1 jet breaks sound barrier 3 times on final test flight (video, photos)
Boom will now shift its attentions toward developing Overture, its supersonic passenger jet.
Boom Supersonic's XB-1 prototype jet breaks sound barrier for first time
Image: The XB-1 demonstrator aircraft. Pic: Boom Supersonic During the test flight, it reached an altitude of 35,000ft before accelerating to Mach 1.1 (844mph) - 10% faster than the speed of sound.
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Boom Supersonic's XB-1 prototype jet breaks sound barrier for first time
Image: The XB-1 demonstrator aircraft. Pic: Boom Supersonic During the test flight, it reached an altitude of 35,000ft before accelerating to Mach 1.1 (844mph) - 10% faster than the speed of sound.