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The Royal Aeronautical Society (RAeS)
50th Annual Cierva Lecture

The Royal Aeronautical Society (RAeS) 50th Annual Cierva Lecture

The Royal Aeronautical Society (RAeS) honored Groen Brothers Aviation (GBA) by inviting David Groen to give the 50th Annual Cierva Lecture at the Society’s home in London this past October 4, 2011. The Cierva Lecture commemorates the achievements of the aviation pioneer Juan de la Cierva, inventor of sustained autorotative flight in the form of the Autogiro. Cierva’s technological breakthrough was the key technology that led to the successful development of the helicopter.
For more information: GBA - http://www.GroenBros.com RAeS - http://aerosociety.com