Denver-based startup Boom Technologies unveiled the design of supersonic passenger jet that will usher the supersonic transportation after the of Anglo-French Concorde retired in 2003.
The aircraft will be capable of carrying 45 passengers in premium class, at a speed of 2.2 Mach (1,451 MPH) or 2.6 times the speed of a typical passenger jet.
The XB-1 will save 3 hours and 45 minutes of
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