COLORADO SPRINGS—Supersonic aircraft developer Boom is nearing completion of a prototype of its in-house produced engine core which is expected to begin ground tests at the company’s Watkins, Colorado ...

NASA's X-59 experimental supersonic aircraft completed its 25th test flight on August 21, reaching Mach 1.2 at approximately 49,000 feet during ...

After 25 successful test flights, an experimental US jet moves closer to quiet supersonic flight trials over residential areas.

Supersonic flight could be making a comeback more than 20 years after the retirement of the Concorde, courtesy of an ...