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Rapid Advances Reported for Hadley H13 Engine

Summary by Ex Terra
The latest variant of the production rate Ursa Major Hadley liquid rocket engine, H13, has successfully completed its first hot fires, following a series of design improvements and updated manufacturing processes. Hadley H13 is the mission-upgraded variant of Ursa Major’s Hadley H11 engine, which is flight proven and designed for hypersonic applications. “With new materials and manufacturing, H13 can be reused more than twice as many times as pr…
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Ex Terra broke the news in on Tuesday, March 10, 2026.
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