SYSTEMS AND METHODS FOR POWER TRANSFER IN CRYOGENIC FUEL APPLICATIONS

A fuel power transfer system (200) for an engine (20) includes a cryogenic fuel supply (210), a fuel pump (212) in fluid communication with the cryogenic fuel supply, a multi-position valve (216) in fluid communication with the fuel pump and a combustion chamber of the engine, a fuel turbine (234) operatively coupled to the fuel pump and having a primary discharge port (236) in fluid communication with the combustion chamber, a primary heat exchanger (248) in fluid communication between the multi-position valve and the fuel turbine, and a gearbox (218) operatively coupled to the fuel turbine and the fuel pump and configured to transfer power from the fuel turbine to the engine.