Ursa Major is an American aerospace and defense company founded in 2015. It specializes in developing flight-proven propulsion and defense systems, with a focus on hypersonics, solid rocket motors, space mobility systems, additive manufacturing, and modular architectures. The company has secured more than $300 million in funding to support its work in these areas.
The company's product line includes the Hadley engine, a reusable hypersonic engine that has successfully completed 10 flights, and the Draper liquid engine, a storable, throttleable system designed for rapid deployment. Ursa Major has delivered over 100 engines and accumulated more than 100,000 seconds of hotfire testing.
Ursa Major operates from locations in Berthoud, Colorado, as well as other sites in Colorado and Ohio. Its work serves the aerospace and defense sectors, addressing national security requirements through advanced propulsion technology.






