Vertipedia is a product of the Vertical Flight Society. With data on 862 aircraft, 613 historical milestones, 478 people, and 394 organizations, Vertipedia is your "one-stop shop" for all things vertical lift.
Our latest featured aircraft for January 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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Birth date milestones of VTOL pioneers
Milestones for the year of birth of VTOL pioneers are not provided in Vertipeda, although they are shown in the relevant biography. The purpose of the display in 'Milestones by year' is to provide a simple, visual timeline of VTOL aircraft development from start to the present day. This timeline comes from the milestones in Vertipedia. Birth date milestones would distort this view as the people in question were developing their careers before achieving tangible milestones that are shown.
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