Astra-Torres airship

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Astra-Torres AT-1 at an air show in 1911

The Astra-Torres airships were non-rigid airships built by Société Astra to a design by Spaniard Leonardo Torres Quevedo in France between about 1908 and 1922. They had a highly-characteristic tri-lobed cross-section rather than the more usual circular cross-section. This was the result of moving most of the blimp's bracing wires inside the envelope in an attempt to minimise drag. Early Astra-Torres airships could be trimmed by moving the entire gondola fore-and-aft.

Astra-Torres airships were used by the French Navy during World War I and for a few years before and after. A few of these were transferred to the American expeditionary forces in Europe, and AT-1, AT-13, and AT-17 were eventually taken back to the United States.

Britain's Royal Navy purchased AT-14, AT-17, and AT-19, these becoming HMA No. 3, HMA No. 8, and HMA No. 16 respectively. All were taken out of service in May 1916, although the Astra-Torres design was imitated in Britain's own Coastal class blimps that served through to the end of the War.

After the war, AT-16 was operated by Transaérienne, carrying sightseeing passengers over Paris, and AT-24 was purchased by the Japanese Navy.


 United Kingdom

See also[edit]


  1. ^ Starkings, Peter. "Japanese Military Airships 1910-1945". Retrieved 8 September 2015.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 82.

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