A newly released image shows the sound barrier being broken on February 10 as America’s first civil supersonic jet completed its second flight at speeds exceeding Mach 1. NASA teams on the ...

When the experimental XB-1 aircraft broke the sound barrier three times during its first supersonic flight on 28 January, it did not produce a sonic boom audible from the ground, according to US ...

The X-59 "quiet" supersonic jet was designed to break the sound barrier without producing the thunderous sonic booms that typically accompany supersonic flight. And based on the results of the ...