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 ...

The X-59 is designed to travel faster than the speed of sound without creating a loud sonic boom. The ultimate goal is to prove that quiet supersonic flight is a viable option for commercial airlines.

The X-59 jet is NASA’s answer to that problem. Featuring a needlelike tip, it’s designed to travel at more than 1,000 miles per hour—about twice as fast as a commercial jet—while limiting the noise of ...

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Although few people ever get the chance to travel at the speed of sound, it is an alluring flight goal and an impressive technological feat. Though average people have flown at high speeds on ...