“Because of their tactical configuration, storable liquid rocket engines, like Ursa Major’s Draper, are uniquely positioned to deliver to the warfighter a hypersonic capability that is manufacturable at scale and at a fraction of the cost of alternatives,” Jablonsky continued.
Draper’s quick-launch capability
Ursa Major’s Draper engine uses a non-cryogenic kerosene peroxide fuel combination. That fuel remains liquid at room temperature, meaning it offers a simpler storage solution than the typical liquid oxygen engine. Liquid oxygen engines must be kept at extremely low temperatures, meaning they require complex cooling systems.