Vertipedia is a product of the Vertical Flight Society. With data on 867 aircraft, 620 historical milestones, 599 people, and 395 organizations, Vertipedia is your "one-stop shop" for all things vertical lift.
1947 - First flight of Seibel S-3
1948 - First Mil helicopter flies (prototype of the Mil Mi-1 Type series)
Our latest featured aircraft for September 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.
References
References are an essential part of a high quality technical database. The referencing system in Vertipedia was introduced early on but needs further development. References are available for most milestones (a small number were not properly referenced during early development). In future releases, references will be available for each entry (e.g. Aircraft, Biography, etc.) and references will be provided for each data point in the Aircraft and Powerplant modules.
Vertipedia makes it easy for you to find a range of information on vertical flight, including: