Abstract: A device for providing a gas component having an electrolysis unit having a first chamber and a second chamber separated from the first chamber by a separating unit. The first chamber receives an electrolyte and provides a first gas component, and the second chamber provides a second gas component. A pressure inside the second chamber is greater than a pressure inside the first chamber. An electrolyte flow of the electrolyte only occurs in the first chamber and a passage of the electrolyte into the second chamber is prevented to keep the second gas component separate from the electrolyte. A phase separation unit separates the first gas component from the electrolyte to provide the first gas component. Also an aircraft or a spacecraft with such a device.

Abstract: A space flight body, in particular a satellite, is proposed, with a drive unit which is operated with hydrogen and oxygen and serves for a maneuvering of the space flight body, and with a fuel material generating device with at least one electrolyzer, which is configured for periodically generating hydrogen and oxygen and comprises at least one electrolysis cell having at least one alkaline electrolyte, wherein the fuel material generating device comprises at least one first storage tank for a storage of the generated hydrogen and at least one second storage tank for a storage of the generated oxygen, allowing the gas for at least one jet nozzle to be retrievable from the two storage tanks by the drive unit via a duct.