The invention aims to provide a variable-angle variable-pitch propeller. The variable-pitch range of a variable-pitch mechanism is within plus or minus 90 degrees of the elevation angle of a blade and within 180 degrees of the rotation plane of the propeller. The pitch of the propeller is changed within a certain angle of a rotating plane of the propeller, so that the propeller generates tangential vector thrust within the certain angle of the rotating plane, and the thrust efficiency is higher than the axial thrust (pulling force or lifting force) efficiency of a common propeller. The power thrust (pulling force or lifting force) conversion efficiency of the propeller is improved, larger thrust (pulling force or lifting force) can be obtained under the same power, maneuverability and safety are improved, or the power thrust (pulling force or lifting force) conversion efficiency of the propeller is improved under certain thrust (pulling force or lifting force), power of power can be reduced, and oil consumption can be reduced. Therefore, fuel oil, electricity and money are saved, environmental protection is achieved, and pollution is reduced.
本发明的目的在于提供一种变角度变螺距螺旋桨,变距机构的变距范围是在桨叶仰角正负90度以内,在螺旋桨旋转平面180度范围内。在螺旋桨旋转平面的一定角度内,改变螺旋桨的桨距,使螺旋桨在旋转平面的一定角度内,产生切向矢量推力,而且这个推力效率高于普通螺旋桨轴向的推力(拉力或升力)的效率。提高螺旋桨的功率推力(拉力或升力)转换效率,可以在同等功率下,得到更大的推力(拉力或升力),提高机动性和安全性,或者在一定的推力(拉力或升力)下提高螺旋桨的功率推力(拉力或升力)转换效率,可以减小动力的功率,降低油耗,节省燃油或者电力,从而省油省电省钱,环保减少污染。
Variable-angle variable-pitch propeller
一种变角度变距螺旋桨
2022-04-15
Patent
Electronic Resource
Chinese
European Patent Office | 2021
|NTRS | 1923
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