Boom Supersonic sans Sonic boom

A startup wants to revive the Concorde for the generations of flyers that missed out, without the noisy boom and the up to ...
Boom Supersonic plans to build the world’s fastest airliner, Overture, and this week announced a breakthrough in the ...
Boom Supersonic’s XB-1 creates a sonic boom inaudible from the ground below when flying at the exact right speed and altitude ...
Boom hopes its breakthrough will allow supersonic flights over land, making US coast-to-coast flights 90 minutes faster.