Ursa Major Technologies announced that its Hadley liquid rocket engine has completed 10 consecutive successful flights with Stratolaunch, including missions at sustained hypersonic speeds.

Several flights reused previously flown engines, demonstrating reusability, durability, and lower-cost rapid turnaround. The milestone confirms Hadley as a flight-proven hypersonic propulsion system built for scalable production, supporting faster deployment of advanced space and defense capabilities.