High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Raoul Hafner, (1905–1980), was an Austrian-born British helicopter pioneer and engineer. Raoul Hafner, FEng, FRAes, a pioneer of rotating wing aircraft design, died as a result of a yachting accident, was an Austrian who made a distinctive contribution to the British aerospace industry, particularly the development of helicopters. Born in 1905, he was educated in Vienna, first at the university and then at technical college where he became interested in rotary-wing concept as a means of making aircraft land more slowly and safely. He obtained a post with the Austrian Air Traffic Company, but his heart was in helicopter design, to which he devoted his spare time, developing the R (Revoplane) 1 and R2. Subsequently, he gave up his job to concentrate on helicopters, building the R2 in 1929 and planning the R3. But instead of constructing the latter, he decided, after hearing of the work of the Spanish pioneer Juan de la Cierva in England, to design an autogyro incorporating the principles of the R1 and R2.

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