thumb|A modern airship, Zeppelin NT D-LZZF in 2010 thumb|The LZ 129 Hindenburg|LZ 129 Hindenburg was the largest airship ever built and was destroyed in 1937. thumb|120px|upright|Dirigible airships compared with related aerostats, from the Brockhaus and Efron Encyclopedic Dictionary, 1890–1907 An airship, dirigible balloon or dirigible is a type of aerostat (lighter-than-air) aircraft that can navigate through the air flying under its own power. Aerostats use buoyancy from a lifting gas that is less dense than the surrounding air to achieve the lift needed to stay airborne.
An airship is a lighter-than-air aircraft that can steer and fly under its own power by using a gas less dense than air for lift. Airships have historical significance as early aircraft, most notably exemplified by the Hindenburg, the largest airship ever built before its destruction in 1937.
AI-generated from the Wikipedia summary — may contain errors.
thumb|A modern airship, Zeppelin NT D-LZZF in 2010 thumb|The LZ 129 Hindenburg|LZ 129 Hindenburg was the largest airship ever built and was destroyed in 1937. thumb|120px|upright|Dirigible airships compared with related aerostats, from the Brockhaus and Efron Encyclopedic Dictionary, 1890–1907 An airship, dirigible balloon or dirigible is a type of aerostat (lighter-than-air) aircraft that can navigate through the air flying under its own power. Aerostats use buoyancy from a lifting gas that is less dense than the surrounding air to achieve the lift needed to stay airborne.
In early dirigibles, the lifting gas used was hydrogen, due to its high lifting capacity and ready availability, but the inherent flammability led to several fatal accidents that rendered hydrogen airships obsolete. The alternative lifting gas, helium, is not flammable, but is rare and relatively expensive. Significant amounts were first discovered in the United States and for a while helium was only available for airship usage in North America. Most airships built since the 1960s have used helium, though some have used hot air.
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