Vertipedia is a product of the Vertical Flight Society. With data on 863 aircraft, 620 historical milestones, 501 people, and 395 organizations, Vertipedia is your "one-stop shop" for all things vertical lift.
1970 - First flight of the VFW H3
Our latest featured aircraft for May 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.
Level of detail in entries
Vertipedia sometimes lacks detail supporting a particular entry. Primarily, this is because Vertipedia data is built using a 'top-down' approach where details are expanded over time. This allows us to more quickly capture breadth as well as depth of data. The depth of data is particularly related to the number of contributors. Please contact the Vertipedia team if you think that you can help.
Vertipedia makes it easy for you to find a range of information on vertical flight, including: