Vertipedia is a product of the Vertical Flight Society. With data on 863 aircraft, 620 historical milestones, 488 people, and 395 organizations, Vertipedia is your "one-stop shop" for all things vertical lift.
Our latest featured aircraft for August is the Cierva W.11 Air Horse .
The aircraft was designed to provide viable heavy load lifting capability for commercial operations. It employed 3 main rotors all rotating in the same direction. Torque offset was provided by thrust components from the 3 rotors through built-in shaft tilt. The aircraft had a semi-monoquoque structure, a single engine, and a long-stroke undercarriage (5ft) to cope with high rates of descent. A description of the aircraft and its characteristics can be found in the following references,
Source: "The Cierva W-11 Air Horse", J. Gordon Leishman, VERTIFLITE Spring 2003, Page 52
Source: "Discussing the Helicopter", FLIGHT Staff, FLIGHT, December 2nd 1948, Pages 665-668
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Aircraft Types, Variants and Versions
The aircraft module in Vertipedia assumes a Type/Variant/Version structure for aircraft from the same family (or series). In many large programs the manufacturer uses this type of structure (possibly using different terms) to develop a range of different versions for different customers. A version normally defines an aircraft for a specific operator. A specific aircraft can only be assigned to one Type and Variant. Aircraft do not have to be assigned to a Type or Variant.
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