Vertipedia is a product of the Vertical Flight Society. With data on 865 aircraft, 620 historical milestones, 525 people, and 395 organizations, Vertipedia is your "one-stop shop" for all things vertical lift.

1945 - CAA recognizes helicopters on pilot certificates

1947 - The British European Airways (B.E.A.) Helicopter Experimental Unit is formed

1959 - The GE T58 becomes the first turbine engine certificated for civil helicopter use

2015 - First flight of the Bell 525 Relentless

Our latest featured aircraft for July is the Cierva W.11 Air Horse .

Attribution

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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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.

Aircraft designations

In Vertipedia an aircraft has both a primary and secondary designation. Normally, the primary designation will be the alphanumeric and the secondary designation will be the name (e.g. UH-60A Black Hawk). Not all aircraft follow this scheme. The primary designation should also be the part of the designation that an aircraft is normally known by (which might be a name), normally the operator given designation. An alternative designation can also be added (in brackets) (e.g. a company model name).

Vertipedia makes it easy for you to find a range of information on vertical flight, including:

  • Targeted searches of documents provided by the Vertical Flight Society, as well as public sources from across the internet
  • Important milestones that have helped shape the history of vertical flight
  • People who have played a role in vertical flight
  • Vertical flight aircraft, such as helicopters, tilt rotors and tilt wings, jet-lift VTOL, and more.

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