Supersonic aircraft expected to return, XB-1 test aircraft breaks the sound barrier.

Golden Ten Data on January 29, according to the Financial Times, a test aircraft XB-1 manufactured by the American start-up Boom broke the sound barrier for the first time in flight, which may pave the way for the return of supersonic passenger transport, and more than 20 years have passed since the retirement of the "Concorde" supersonic aircraft. On Tuesday, the XB-1 successfully broke through Mach 1 (about 770 mph) at an altitude of 34,000 feet over the Mojave Desert in California. The Denver-based company is backed by several Silicon Valley pros, including OpenAI's Sam Altman. The company said the flight marked the first independently developed (rather than government-backed) jet to break the sound barrier. Boom was founded in 2014 by CEO Blake Scholl, who hopes to start carrying passengers on its commercial airliner, Overture, as early as 2029.