charges between $3,500 and $8,000 to create a customized sound barrier for a residential standby generator, says Steven Drago, account manager. The company generally recommends installing a fence ...

Boom, the startup developing a new generation of supersonic aircraft, has achieved a major milestone after its test plane broke the sound barrier for the first time. The XB-1 “Baby Boom ...

After years of testing and refinement, a pilot flying the aerospace company’s XB-1 scale prototype finally broke the sound barrier during a livestream event—not once, not twice, but three times.

During the XB-1's historic flight on Tuesday—its 12th test flight overall—the aircraft stayed supersonic for around four minutes before breaking the sound barrier two more times during the ...

On its 12th test flight, the Boom XB-1 prototype broke the sound barrier three times and achieved a top speed of Mach 1.1. On its 12th test flight, the Boom XB-1 prototype broke the sound barrier ...