Boom Supersonic’s XB-1 creates a sonic boom inaudible from the ground below when flying at the exact right speed and altitude ...

American firm Boom Supersonic’s XB-1 has once again reached supersonic speeds without producing an audible boom, following ...

Boomless Cruise is based on physics known as the Mach cutoff, in which a sonic boom refracts in the atmosphere and never ...

XB-1’s supersonic flight, in the same airspace where Chuck Yeager broke the sound barrier, marks the first civil supersonic ...

Boomless Cruise is based on well-established physics known as Mach cutoff, in which a sonic boom refracts in the atmosphere ...