Cryogenic Transfer Stage for Beyond Low Earth Orbit Access

The proposed innovation is a transfer stage spacecraft, Bifrouml;st, a high thrust vehicle for rapid orbital transfer both as an upper stage on commercial launch vehicles and reusable orbital maneuvering vehicle, enabling both NASA and commercial missions. Rapid access to most of these orbits today is nonexistent especially for small spacecraft. A longer term application of the technology is a scaled-up Mjouml;lnir engine for expendable and reusable launch vehicles to improve performance, reliability, and safety with much lower green-house gas (GHG) emissions.