For the first time, a privately developed aircraft has flown faster than sound
High above a barren California desert on Tuesday, a privately developed aircraft broke the sound barrier for the first time ...
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Boom Supersonic's next-generation XB-1 passenger plane 1 step away from breaking the sound ...
Boom Supersonic's XB-1 demonstrator craft could become the first commercial jet to break the sound barrier since Concorde after acing its 11th test and reaching 0.95 Mach at low altitudes.