AUXILIARY POWER GENERATION AND COOLING SYSTEMS ON LIQUID HYDROGEN FUELED AIRCRAFT

A hydrogen fueled power system (10) of a vehicle includes a liquid hydrogen fuel source (14) having a volume of liquid hydrogen fuel and a thermal engine (20) configured to expand the liquid hydrogen fuel into gaseous form via interaction between a heated first portion of the hydrogen fuel and a second portion of the hydrogen fuel. A heat exchanger (16) is positioned between the liquid hydrogen source and the thermal engine, and is configured to heat the first portion of the hydrogen fuel via thermal energy exchange with a relatively warm fluid. A turbine (24) is located fluidly downstream of the heat exchanger and upstream of the thermal engine, and is driven by the heated first portion. A power generator (26) is located fluidly downstream of the thermal engine (20). The power generator utilizes (26) exhaust from the thermal engine to generate electrical or mechanical power. A compressor (64) is operably connected to and driven by the turbine.