[Ursa Major in Ursa Major] Ursa Major rapidly advances its Hadley H13 Engine

BERTHOUD, Colorado, (March 4, 2026) — Ursa Major’s latest variant of the flight-proven, production rate 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. H13 increases engine reusability and improves overall engine performance compared to previous Hadley variants and is intentionally designed to fly in a variety of hypersonic and launch applications.

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