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Advanced / Transformational Technology

Ursa Major Gets Largest Contract To Date In $33 Million Order By Stratolaunch For Hadley Engines

By Cal Biesecker

Monday, June 16th, 2025

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Ursa Major Gets Largest Contract To Date In $33 Million Order By Stratolaunch For Hadley Engines

Ursa Major's Hadley liquid-fueled engine being manufactured. Photo: Ursa Major

Propulsion developer and manufacturer Ursa Major on Monday said it has received a $32.9 million contact from Stratolaunch to provide 16 upgraded Hadley engines that the aerospace vehicle testing company will reuse to increase flight test cadence to support hypersonic technology development. The contract for the Hadley H13 liquid rocket engine is Ursa Major’s largest ever. The Denver-based startup’s previous largest contract was for 10 Hadley engines in April with Sirius Technologies, the U.S. subsidiary of Japan’s space launch company…

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