US start-up Hermeus has flown its first supersonic-capable aircraft, the Quarterhorse Mk 2.1, marking a significant step ...

For the second time in just over nine months, an Atlanta-based company this week debuted a new supersonic test aircraft.

Hermeus says it flew Quarterhorse Mk 2.1 at Spaceport America, launching a flight-test campaign aimed at reaching supersonic speeds.

COLORADO SPRINGS—Atlanta-based aircraft developer Hermeus has successfully completed the first flight of its Pratt & Whitney ...

Hermeus successfully flew its latest Quarterhorse aircraft, marking the company’s second first flight in less than a year.

As the first major piloted NASA X-plane to fly in a generation and the first crewed, purpose-built U.S. high-speed research aircraft since the X-15 of the 1960s, the X-59 low-boom demonstrator is the ...

If you're a fan of high-tech aircraft, you're going to love this! A much-awaited unveiling and a promise to revolutionize commercial aviation. “Today we are witnessing history,” said John Clark, ...

Lockheed Martin is in the final stages of developing and delivering the X-59 Quesst. It's a supersonic aircraft that will be headed to NASA, and it promises to upend the supersonic aircraft industry.