Propulsion to, in,
and beyond orbit
From liftoff to low Earth orbit, Ursa Major’s launch, satellite propulsion, and space-based defense systems move faster, fly farther, and adapt to the evolving threat landscape—delivering resilient space operations and true freedom to maneuver.
In-Space Mobility
Ursa Major’s modular, hydrazine-based satellite propulsion system delivers tactically responsive, six-degree-of-freedom (6DOF) control for dynamic operations in orbit. Designed for mission flexibility from LEO to GEO and beyond, our monopropellant system is highly maneuverable, restartable, and optimized for custom burn durations in the vacuum of space.
With in-house development of critical components, including propellant tanks, avionics, and thrusters, we minimize lead times while maximizing performance and reliability. Ursa Major’s manufacturing expertise ensures a resilient, scalable supply chain and productized components tailored to mission needs. Whether maneuvering to avoid threats, repositioning for rapid response, or extending satellite lifespan, Ursa Major’s in-space propulsion unlocks high-performance mobility at operational speed.
Space-Based Defense
With tactical storability and cost-effective manufacturing, Ursa Major’s propulsion solutions, like our solid rocket motors, and tactical, storable liquid engines, are ideal for space-based defense systems.
Launch Engines
Hadley
America’s first oxygen-rich staged combustion engine
Suitable for small launch, hypersonics.
Ripley
High performing kerosene engine.
Suitable for small to medium commercial launch.
Arroway
Advanced engine suitable for heavy and national security launch.
Launch
Liquid Rocket Engines with
