The invention discloses a spiral device for flying and an unmanned aerial vehicle, the spiral device comprises a propeller hub and a propeller, one end of the propeller is fixedly connected to the propeller hub and extends along the radial direction of the propeller hub, and the propeller hub is used for being connected with an external driving mechanism; the propeller is provided with a front edge, the front edge is provided with a plurality of sine sawtooth structures with different wavelengths in the length direction of the front edge, each sine sawtooth structure is sequentially divided into a plurality of sawtooth parts in the length direction of the sine sawtooth structure, the two ends of each sawtooth part are the wave trough positions of the sine sawtooth structures, and the sawtooth parts with the different wavelengths are sequentially connected in a staggered mode. And a trough is formed between two adjacent sawtooth parts with different wavelengths. At the positions of the troughs, when the sawtooth parts with the two wavelengths act on the turbulent vortexes due to different shapes, the time spent on convection of the turbulent vortexes among the troughs is different, and phase difference is caused, so that the two sawtooth parts at the positions of the troughs enable a noise source to destructively interfere, and a better noise reduction effect is achieved.
本发明公开了一种用于飞行的螺旋器与无人飞机,其中,螺旋器包括桨榖与螺旋桨,螺旋桨的一端固定连接于桨榖,并沿桨榖的径向方向延伸,桨榖用于与外部的驱动机构相连接;螺旋桨具有前缘,前缘沿其长度方向设置有多个不同波长的正弦锯齿结构,每个正弦锯齿结构沿其长度方向依次分为多个锯齿部,锯齿部的两端均为正弦锯齿结构的波谷位置,其中,不同波长的锯齿部依次交错连接,相邻两个不同波长的锯齿部之间形成波谷。在波谷的位置,两种波长的锯齿部由于其形状不同对湍流涡旋作用时,导致湍流涡旋在波谷间对流所花费的时间不同而导致相位差,因此波谷位置的两种锯齿部使噪声源发生破坏性的干涉,从而产生更好的降噪效果。
Spiral device for flight and unmanned aerial vehicle
用于飞行的螺旋器与无人飞机
2021-11-26
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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