Boom’s supersonic test plane breaks the sound barrier for the first time

Ten months after its long-delayed first subsonic flight took place last March, Boom Supersonic’s prototype test plane, the XB-1, broke the sound barrier today three times during its twelfth flight. The XB-1 is a smaller-scale demonstration version of the larger Overture airliner Boom wants to eventually build that will carry 64 passengers on supersonic international […]