Hermeus seems dead keen on fast-tracking its way to hypersonic passenger flight. Its uncrewed subsonic Quarterhorse Mark 1 ...

Aviation startup Hermeus announced the first flight of the Quarterhorse Mk 1 prototype, a little over a year after ...

First step toward hypersonic aviation: high-speed prototype takes off from Edwards Air Force Base, California ...

Hermeus on May 27 said its Quarterhorse Mk 1 unmanned aircraft successfully flew for the first time, a key milestone on the ...

Part of the reason for the lower cost was that the company’s engineers used an off-the-shelf J85 turbojet. It also used 3D printing for about 15 percent of its engine parts. “The high-speed ...

Boom’s demonstrator aircraft, originally scheduled to fly in 2017, relies on a trio of 1950s-era J85 turbojet engines, the sorts used to power vintage aircraft like the Northrop T-38 trainer or ...

Quarterhorse Mk 2. Powered by a General Electric J85 turbojet engine, the Mk 1 will be used to test high-speed takeoffs and landings in a series of uncrewed, remotely piloted flight tests at ...

Chimera II will power Quarterhorse Mk 2. They will swap that J85 turbojet out in favor of a much larger and more powerful Pratt & Whitney F100 turbofan. The F100 used for the F-15 and F-16 over the ...

But the Air Force said it expects to see pilot training shortfalls through the end of the fiscal year, and that the J85 turbojet engine enterprise won’t fully recover until April 2024.

Originally utilizing two nose-mounted Armstrong Siddeley Viper turbojet engines, the X-14 was later upgraded to General Electric J85 turbojet engines—as used in the Cessna A-37 Dragonfly—that ...

It featured General Electric J85 turbojet engines that doubled the power of the original T-37, and weapons upgrades including a 7.62mm Gatling gun with 3,000 rounds per minute and six pylons ...