The invention provides a staggered cycloid paddle which comprises a main shaft and 2n paddles, and the number of each group of paddles on a single side is n. The cycloid propellers are arranged in a staggered mode, the number of blades of the half-side cycloid propellers is half of that of traditional cycloid propellers, efficiency is improved, and the vibration level is the same as that of the traditional cycloid propellers. Under the same vibration level, the blade area is halved, the weight of the blade structure is halved, the blade wingtip vortex can be located in the center of the propeller disc, the first set of blades induce relative upward washing on the second set of blades, the inner and lower washing of the propeller disc is remarkably reduced, and therefore the efficiency of the cycloidal propeller is effectively improved; the hovering efficiency of the staggered cycloidal propeller can be improved by at least 6%.
本发明提出一种交错摆线桨,包括主轴和桨叶,桨叶个数为2n,其中单侧每组桨叶个数为n。本发明通过采用交错排列的摆线桨,半侧摆线桨叶片数量是传统摆线桨的一半,既提高效率,而振动水平与传统摆线桨相同。在相同振动水平下,叶片面积减半,使得叶片结构重量减半,而且能够使桨叶翼尖涡位于桨盘中央,第一组桨叶在第二组桨叶上诱导出相对上洗,显著降低桨盘内下洗,从而有效提高摆线桨效率,根据CFD计算,与传统摆线桨相比,交错摆线桨的悬停效率至少可提高6%。
Staggered cycloid paddle
一种交错摆线桨
2024-08-23
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |