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A vacuum airship, also known as a vacuum balloon, is a hypothetical airship that is evacuated rather than filled with a lighter-than-air gas such as hydrogen or helium. First proposed by Italian Jesuit priest Francesco Lana de Terzi in 1670, [ 1 ] the vacuum balloon would be the ultimate expression of lifting power per volume displaced.
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]
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 mystery airship or phantom airship was a phenomenon that thousands of people across the United States claimed to have observed from late 1896 through mid 1897. Typical airship reports involved nighttime sightings of unidentified flying lights, but more detailed accounts reported actual airborne craft similar to an airship or dirigible . [ 1 ]
O-1 (airship) built by SCDA, Italy, and the only true semi-rigid airship to serve with United States Navy. RS-1 was the only American-built semi-rigid military airship (flown by the United States Army) Manufacturer: Goodyear, maiden flight: 1926. Raab-Katzenstein 27 - maiden flight: 1929-05-04; Nobile's company designed or built the following ...
SSZ 8 airship cockpit, Alberta, Canada SSZ 17 landing at Pembroke, 1917. Note the boat-shaped car and scoop to supply air to the ballonets. The SSZ was built at the Royal Naval Air Service (RNAS) airship station at Capel-le-Ferne [2] near Folkestone to the design of three officers that were serving there [3] as a successor to the SS class.
The 1929 Slate All-Metal Airship, built in Glendale, California, had a hull constructed from corrugated aluminum panels, along with a revolutionary propulsions system consisting of a "blower" at the nose of the airship which would propel the vehicle forward by creating a partial vacuum ahead of the vessel. [14]
The R100 would be designed largely using existing technology, while the R101 was intended to act as a test-bed for innovative techniques in airship design. The two airships were soon referred to as the "Capitalist" ship (R100) and the "Socialist" ship (R101). [7] [8] Further airships would include the best features from both. Both airships were ...