Boom Supersonic sans Sonic boom

Boom Supersonic says its XB-1 aircraft achieved supersonic flight without an audible sonic boom on the ground below. CEO ...
Boom Supersonic plans to build the world’s fastest airliner, Overture, and this week announced a breakthrough in the ...
GREENSBORO, N.C. — Boom Supersonic’s XB-1 took its last test flight on Monday. The aircraft started its flight around 1:30 p.m. on Feb. 10. It was the 13th and final flight for the aircraft.