The Cierva Named Lecture: The audio recording from a live talk by Frank Robinson of Robinson Helicopter Company at The Royal Aeronautical Society in October 2010.
An audio presentation from a live talk given by John Piasecki at the Royal Aeronautical Society for the annual Cierva Named Lecture in October 2009.
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The Cierva Lecture is named after Juan de la Cierva, FRAeS, an aeronautical engineer who pioneered rotary flight. In 1926 with the backing of the Weir brothers he formed the Cierva Autogiro Company and it was his development of rotor blade design and articulated rotor blades, which played a major role in the first successful helicopter in 1936.