Word: autogiros
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Dates: during 1929-1929
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...fuselage, tail structure, landing gear and propelling motor the autogiro is a typical airplane. But for wings it has four great vanes fixed on a vertical mast so as to revolve horizontally. They have no motor as have the horizontal propellers of helicopters...
...propeller motor pulls the autogiro across a flying field the forward motion sets the vanes revolving swiftly, like a great pinwheel. As they turn they create a lifting surface equivalent to a standard plane's wings...
...autogiro's most valuable feature is that it can descend almost vertically, and on almost any sort of field...
President Harold F. Pitcairn of Pitcairn Aviation, Inc., has found such promise in Juan de la Cierva's Autogiro that last week he organized Pitcairn-Cierva Autogiro Co. of America to develop the autogiro in this country...