The test flight of the XB-1 aircraft is a step in manufacturer Boom Supersonic's goals of building a supersonic passenger jet.
The XB-1 aircraft accelerated to Mach 1.05 within about 11 minutes of taking off, according to Boom Supersonic and live video ...
Boom is convinced it can overcome the barriers that grounded the Concorde and make supersonic travel affordable and greener.
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