Dictionary Meaning and Definition on 'Airship'
n : a steerable self-propelled airship [syn: dirigible]
Wikipedia Meaning and Definition on 'Airship'
An airship or dirigible is a type of aerostat or "lighter-than-air aircraft" that can be steered and propelled through the air using rudders and propellers or other thrust mechanisms. Unlike aerodynamic aircraft such as fixed-wing aircraft and helicopters, which produce lift by moving a wing through the air, aerostatic aircraft, such as airships and hot air balloons, stay aloft by filling a large cavity with a lifting gas.
The main types of airship are non-rigid (or blimps), semi-rigid and rigid. Blimps are small airships without internal skeletons. Semi-rigid airships are slightly larger and have some form of internal support such as a fixed keel. Rigid airships with full skeletons, such as the huge Zeppelin transoceanic models, have nearly disappeared after several high-profile catastrophic accidents during the mid-20th century.[See more about Airship at Dictionary 3.0 Encyclopedia]
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