Invention Grant
US09140126B2 Propeller with reactionary and vacuum faces 有权
螺旋桨具有反作用和真空面

Propeller with reactionary and vacuum faces
Abstract:
A novel airfoil design comprising a reactionary front face that pushes into the flow of air with a high angle of attack and a vacuum-producing face which forces the early separation of the flow of air from the top side of the airfoil, creating an area of high negative pressure which pulls upward, contributing to lift.
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