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== Technology and transport == * [[Schütte-Lanz SL2]], an airship used in WWI ...

{{Short description|Hypothetical airship that is evacuated rather than filled with a lighter-than-air gas}} ...cuum airship''', also known as a '''vacuum balloon''', is a hypothetical [[airship]] that is [[Vacuum|evacuated]] rather than filled with a lighter-than-air g ...

...right|thumb|242x242px|Fire-damaged Duralumin cross brace from the Zeppelin airship [[LZ 129 Hindenburg|''Hindenburg'']] (DLZ129) salvaged from its crash site ...S_Akron_duralumin_sample.jpg|left|thumb|[[Duralumin]] sample from the 1931 airship [[USS Akron|USS ''Akron'' (ZRS-4)]]]] ...

...Aerostats include unpowered [[balloon (aircraft)|balloons]] and powered [[airship]]s. ...]s. Common examples of aircraft include [[airplane]]s, [[helicopter]]s, [[airship]]s (including [[blimp]]s), [[Glider (aircraft)|glider]]s, and [[hot air bal ...