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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.
The fabric-clad rigid airships were given commissions, the same as warships. [1]USS Shenandoah (ZR-1) - served 1923-25, lost 3 September 1925 due to structural failure while in line squalls, 14 killed
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 ...
Two days later the handling party which was attempting to tow the airship across the water damaged the DN-1.The Navy decided that the airship was not worth repairing and the DN-1 was scrapped. [ 11 ] [ 16 ] The "Rigid Airship Manual (GPO, 1928) commented upon the DN-1 "was so overweight that it could barely lift itself off the ground.