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 ...

Boom's XB-1 demonstrator took its maiden flight in March of 2024. In October of 2024, the XB-1 was teasing supersonic speeds.

The XB-1's 13th test flight was also its last. Credit: Boom Supersonic Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday.

The company says that it accomplished the feat during a test flight of its XB-1 aircraft late last month. "During its historic first supersonic flight on January 28, 2025, Boom’s demonstrator ...

But the XB-1’s first supersonic test flight – conducted on 28 January – demonstrated an effect known as Mach cut-off whereby a sonic boom, under certain conditions, does not reach the ground ...

Two weeks ago, Boom Supersonic’s XB-1 demonstrator plane made history when it broke the sound barrier over the continental United States, reaching 750 miles per hour (Mach 1.12) near Barstow, ...

Boom Supersonic's XB-1 demonstrator vehicle conducts its 13th and final test flight on Feb. 10, 2025. The jet broke the sound barrier three times during the flight.

Boom Supersonic hit a milestone yesterday when its XB-1 experimental jet passed Mach 1.0, the speed of sound, on its way to Mach 1.122 or 860.87 mph. The event took place over the Mohave Desert ...

A newly released image shows the sound barrier being broken on February 10 as Boom Supersonic’s XB-1, America’s first civil supersonic jet, completed its second supersonic flight.

When the experimental XB-1 aircraft achieved supersonic speeds on a test flight, it did not create a disruptive sonic boom – thanks to a physics phenomenon called the Mach cutoff ...