Invention Application
US20120292441A1 SYSTEM AND METHOD FOR REDUCING THE NOISE OF PUSHER TYPE AIRCRAFT PROPELLERS 有权
用于减少推进式飞机螺旋桨噪声的系统和方法

SYSTEM AND METHOD FOR REDUCING THE NOISE OF PUSHER TYPE AIRCRAFT PROPELLERS
Abstract:
A system and method for reducing the noise penalty of a pusher propeller, allowing an aircraft to retain its advantages for UAV configurations, while allowing acoustic performance similar to that of a tractor propeller by reducing, or eliminating, propeller noise emissions. The system and method provide an airfoil-shaped flight surface with (i) a scoop configured to route boundary layer air and associated wake from said flight surface, and (ii) a suction device configured to provide a suction pressure, wherein the scoop routes boundary layer air from the flight surface to the suction device via an opening in the flight surface.
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