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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. [1] Aerostats use buoyancy from a lifting gas that is less dense than the surrounding air to achieve the lift needed to stay airborne.
The Giffard dirigible or Giffard airship was an airship built in France in 1852 by Henri Giffard, it was the first powered and steerable airship to fly. The craft featured an elongated hydrogen -filled envelope that tapered to a point at each end.
It was the world's first passenger-carrying airship (then known as a dirigible, from French). [2] Both practical and steerable, the hydrogen-filled airship was equipped with a 2.2-kilowatt (3 hp) steam engine that drove a propeller. The engine was fitted with a downward-pointing funnel.
A non-rigid airship, commonly called a blimp , is an airship (dirigible) [1] without an internal structural framework or a keel. Unlike semi-rigid and rigid airships (e.g. Zeppelins), blimps rely on the pressure of their lifting gas (usually helium, rather than flammable hydrogen) and the strength of the envelope to maintain their shape. Blimps ...
Construction of USS Shenandoah, 1923, showing the framework of a rigid airship. A rigid airship is a type of airship (or dirigible) in which the envelope is supported by an internal framework rather than by being kept in shape by the pressure of the lifting gas within the envelope, as in blimps (also called pressure airships) and semi-rigid airships.
To win the prize, Alberto Santos-Dumont decided to build dirigible No. 5, a larger craft than his earlier designs. On August 8, 1901 during one of his attempts, the airship began to lose gas, causing the envelope to lose shape and making it necessary to shut down the engine, which also powered the ventilator which inflated the internal ballonet ...
List of airships of the United States Navy identifies the airships of the United States Navy by type, identification, and class. Rigid airships (ZR)
Nulli Secundus II being walked out of its shed. Following proposals for a new airship, it was decided to re-use the envelope of the first airship, which was enlarged to a capacity of 84,768 ft. [7] [8] New features included a silk outer skin over the whole structure, a new and revised understructure, a small additional "reserve" gasbag in the space in between, modified control surfaces ...