U.S. startup Astro Mechanica plans to take its hybrid-electric supersonic engine into high-altitude and high-speed ground testing this year as it moves toward flying the unique powerplant in 2027 in a ...

GE and Lockheed ground tested a new air-breathing hypersonic jet engine capable of powering missiles to speeds well in excess ...

The aviation world is buzzing with excitement over a breakthrough technology that could change how we fly. Enter wave engines—jet engines that don’t rely on spinning blades or turbines. Instead, they ...