Invention Grant
US09381988B2 Rotating circular airfoil and propeller system 有权
旋转圆形翼型和螺旋桨系统

Rotating circular airfoil and propeller system
Abstract:
A rotating circular airfoil system that includes a disc body that has an airfoil shape in cross section. The air foil shape has an angle of attack that is symmetrical. The disc body's includes a circular inner edge which forms a circular center opening and the airfoil shape's leading edge. The disc body also includes an outer edge that forms the airfoil shape's trailing edge. Intersecting ribs extend across the center opening and include a shaft opening that attaches to a rotating shaft. Formed on the top and bottom surfaces of the disc body are evenly spaced apart, extending fins. The fins extend continuously from the inner edge to the outer edge. When a rotating shaft is inserted into the shaft opening and imparts sufficient rotation to the disc body, the fins contact the air forcing it to flow along disc body's top and bottom surfaces and creating a lifting force.
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