The invention belongs to the field of aircrafts, and particularly relates to a paddle and a fan of a fan engine and the fan engine. The paddle of the paddle fan engine comprises a bent and twisted paddle body, the paddle root of the paddle body is swept forwards, the paddle tip of the paddle body is swept backwards, the paddle front edge of the paddle body is bent in a C shape in the flow direction, and the paddle rear edge of the paddle body is bent in an inverted S shape in the flow direction. When the paddle is used, the load level of a single paddle can be reduced, flow separation caused by shock wave-boundary layer interference is delayed, great flow loss generated on the upper middle portion of the paddle is avoided, and the propelling efficiency is improved.
本发明属于飞行器领域,具体涉及一种桨扇发动机的桨叶、桨扇及桨扇发动机。其中一种桨扇发动机的桨叶,包括弯扭的桨叶本体,所述桨叶本体的桨根前掠、桨尖后掠,所述桨叶本体的桨叶前缘为沿流向的C型弯曲,所述桨叶本体的桨叶后缘为沿流向的反S型弯曲。本发明的桨叶在使用中能够降低单个桨叶的负荷水平,延缓激波‑附面层干扰引起的流动分离,避免桨叶中上部产生很大的流动损失,提高了推进效率。
Paddle of paddle fan engine, paddle fan and paddle fan engine
一种桨扇发动机的桨叶、桨扇及桨扇发动机
2023-04-14
Patent
Electronic Resource
Chinese