HyperMach Raises SSBJ Speed Target to Mach 4
HyperMach Aerospace, a U.K. company with ambitious plans to develop a $180 million supersonic business jet, released revised performance figures at this week’s Dubai Airshow, announcing that the SSBJ will be capable of flying at Mach 4.0. That’s a marked increase from the Mach 3.6 top speed provided when the company launched the project over […]