The invention discloses a rotor wing and a rotor craft, the rotor wing comprises a blade, a plurality of convex structures are convexly arranged on the surface of the blade, the plurality of convex structures are sequentially arranged at intervals along the spanwise direction of the blade, and a height difference exists between the adjacent convex structures. Compared with the prior art, the multiple protruding structures are sequentially arranged in the spanwise direction of the blade at intervals, the contact area with air is increased through the multiple protruding structures with the height difference, forced turbulent flow transition on laminar flow separation bubbles of the blade is achieved, airflow is made to be better attached to the surface of the blade, the thickness of a trailing edge boundary layer is reduced, and the service life of the blade is prolonged. Therefore, the noise generation area is reduced, and the purpose of noise reduction is achieved.
本发明公开了一种旋翼以及旋翼飞行器,旋翼包括桨叶,桨叶的表面凸设有多个凸起结构,多个凸起结构沿桨叶的展向依次间隔设置,相邻的凸起结构之间具有高度差。与现有技术相比,本发明通过沿桨叶的展向依次间隔设置多个凸起结构,利用具有高度差的多个凸起结构增大与空气的接触区域,实现对桨叶层流分离泡的强制扰流转捩,使得气流更加贴合桨叶表面,降低尾缘边界层厚度,从而减小噪声的发生区域,达到降低噪音的目的。
Rotor wing and rotor wing aircraft
一种旋翼以及旋翼飞行器
2024-06-28
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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