marks a milestone in the race to bring back supersonic commercial flight—without the deafening sonic boom that grounded its ...
"This image makes the invisible visible — the first American made civil supersonic jet breaking the sound barrier." ...
We know what a sonic boom sounds like ... The company’s XB-1 “Baby Boom”—a demonstrator that is about one-third the size of Overture, a supersonic, SAF-powered airliner it is developing ...
But while the successful test flight of XB-1 shows that supersonic flight without sonic booms is technically feasible, the ...