Abstract: An air-distribution system has a first hollow body and a membrane. The first hollow body has a first air-conducting space. The membrane is fitted on the first hollow body in such a way that a second air-conducting space is formed. The second air-conducting space is enclosed by the membrane and an outer surface of the first hollow body. The method comprises the following steps: providing a membrane; fastening the membrane to a hollow body, with the result that there is obtained a second air-conducting space which is enclosed by the membrane and an outer surface of the hollow body.

Abstract: An aircraft battery exhaust system comprises a fluid discharge opening formed in an aircraft outer skin and a fluid discharge line having a first end connected to the fluid discharge opening and a second end. A first fluid discharge branch line has a first end connected to the second end of the fluid discharge line and a second end connected to a first battery in such a manner that a fluid leaking from the first battery is directed into the first fluid discharge branch line. A second fluid discharge branch line has a first end connected to the second end of the fluid discharge line and a second end connected to a second battery in such a manner that a fluid leaking from the second battery is directed into the second fluid discharge branch line.