Ursa Major’s H13 Engine Completes First Hot Fire Tests

• Rocket engine manufacturer Ursa Major‘s newest iteration of its Hadley liquid rocket engine, the H13, has passed its first hot fire tests after undergoing a series of engineering refinements and updated production methods, including a deeper reliance on additive manufacturing to streamline component production and reduce costs.  Building on the flight-proven H11 variant, the H13 […]

Rocket engine manufacturer Ursa Major‘s newest iteration of its Hadley liquid rocket engine, the H13, has passed its first hot fire tests after undergoing a series of engineering refinements and updated production methods, including a deeper reliance on additive manufacturing to streamline component production and reduce costs. Building on the flight-proven H11 variant, the H13 is purpose-built for hypersonic missions and brings high gains in both reusability and performance. It is designed to operate across a wide range of launch and hypersonic scenarios without requiring platform-specific customization. “Hadley is Ursa Major’s foundational engine that has already flown hypersonic several times,” said Chris Spagnoletti, CEO at Ursa Major. “With new materials and manufacturing, H13 can b