AIRCRAFT FUEL CELL PROPULSION UNIT

The invention relates to an aircraft fuel cell propulsion unit comprising a fuel cell system that includes at least one anode and at least one cathode as well as a process gas device for supplying the anode and the cathode with fuel and ambient air and for discharging used process gases, a ram air duct through which ram air flows and a heat exchanger arranged in the ram air duct which is designed to dissipate heat generated by the fuel cell system to the environment.