American Rocket Propulsion Leader Ursa Major Completes Hotfire Test Campaign of 50,000-Pound Thrust “Ripley” Engine

Ripley is the Highest-Performing American Kerosene Engine Ever Built DENVER, March 9, 2023 /PRNewswire/ — Ursa Major, America’s leading privately funded company focused solely on rocket propulsion, today announced a milestone in the development of its redesigned “Ripley” rocket engine:…