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 July 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
Vertipedia notes are brief descriptions of how and why Vertipedia works the way it does. Check back often for the latest note, or view the complete list.
Why not use just typical data for a Type of aircraft?
Other databases (e.g. Wikipedia) tend to show typical data for one aircraft deemed to be representative of a Type. Whilst this can be informative, it implies that all other aircraft are very similar, which may or may not be true. Vertpedia allows users to enter data for any aircraft in a Type series. This is particularly useful when there are significant, or noteworthy, differences between individual aircraft within the Type and avoids someone having to decide what is representative.
Vertipedia makes it easy for you to find a range of information on vertical flight, including: