Boom Supersonic XB-1 smashes the sound barrier becoming the 1st civil aircraft to go supersonic in US history
Boom Supersonic XB-1 smashes the sound barrier becoming the 1st civil aircraft to go supersonic in US history- By achieving a top speed of Mach 1.1, Boom Supersonic has broken records and is on course to revive supersonic passenger travel.
Source: livescience.com