In airplane proposed by W. L. LePAGE, wing tips would be equipped with propeller hubs operating on vertical or horizontal axes; craft would take off vertically and start forward by cyclic pitch control of rotor blades; as ship gained speed, pilot would turn hubs gradually until blades were spinning in conventional vertical plane.
Lepage rotor-prop
Am Helicopter
American Helicopter ; 7 , n 8
1947
Article (Journal)
English
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