In May 2025, Delhi NCR-based Green Aero also successfully demonstrated its first hydrogen-powered jet engine named The Blue Dragon, but commercial deployment of such engines is still a long way away ...

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 ...