
The Boom airplane would travel at Mach 2.2 -- more than twice the speed of sound and 2.6 times faster than any other airliner.
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CCTV.com
04-19-2016 09:14 BJT

The Boom airplane would travel at Mach 2.2 -- more than twice the speed of sound and 2.6 times faster than any other airliner.