Hypersonics is an area where the US potentially lags behind Russia and China, and current propulsion methods such as solid-fuel rockets and air-breathing engines have limitations. Ursa Major’s American-made storable liquid rocket engine technology offers advantages over traditional liquid and solid rocket propulsion, including: ability to start, stop, and throttle the engine for improved maneuverability and survivability; liquid propellants that can be handled more easily than cryogenic or toxic fuels and stored for years; the ability to operate endo- and exo-atmospherically; and a modular and affordable design using advanced 3D printing techniques. 

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