Abstract: A cooling system on board an aircraft includes a device for removing by suction a boundary layer, and a heat exchanger through which flows the boundary layer air that has been removed by suction. Cooling by way of a ram air channel can be reduced or entirely stopped, depending on the flight phase, such that the air drag of the aircraft and thus the fuel consumption can be reduced.

Abstract: A hybrid system contains a fuel cell and a combustion engine, whereby a nitrogen-enriched discharge air of the fuel cell is used for a combustion process in a combustion chamber of the combustion engine.

Abstract: A drink dispenser (10) which is particularly suitable for use on board a passenger plane, comprises a drink preparation unit (12) and a supply unit (14). The supply unit (12) has a fuel cell system (16) with a fuel cell (18) and is configured to supply the drink preparation unit (12) with water produced by the fuel cell (18).

Abstract: A safety system for reducing the explosion risk of a fuel tank comprises a protective gas generating device and a delivery device for delivering the protective gas generated by the protective gas generating device into the fuel tank. The protective gas generating device (24) comprises a fuel cell system (26) having a fuel cell (28) and is configured so as to provide the delivery device (14) with a protective gas generated by the fuel cell (28) during operation of the fuel cell system (26).

Abstract: An apparatus (10) for preparing meals, which is suitable in particular for use on board a commercial aircraft, comprises a meal preparation unit (12) and a supply unit (14). The supply unit (12) comprises a fuel cell system (16) having a fuel cell (18) and is equipped to supply the meal preparation unit (12) with water produced by the fuel cell (18).

Abstract: A wellness facility (10), which is suitable, in particular, for use on board an aeroplane, comprises a wellness unit (12) and a supply unit (14). The supply unit (14) comprises a fuel-cell system (16) with a fuel cell (18) and is adapted to supply the wellness unit (12) with water generated by the fuel cell (18).

Abstract: Currently, the wastewater collection tank and the freshwater tanks comprise separate containers which are each mounted individually in the pressurized area of the cabin on the structure. In the present application a water-wastewater module is described which has two tanks for disposing of feces and wastewater and a water generation unit in the form of the fuel-cell module as integral components. The module and the fuselage may advantageously be manufactured separately from one another and first have to be combined during the final mounting of the aircraft.

Abstract: A replaceable cartridge for coupling to a consumer or to a filling station, wherein the replaceable cartridge comprises at least one disconnectable connection coupling for connection to the consumer or the filling station. Furthermore, the replaceable cartridge comprises a tank for holding liquid hydrogen.