The invention provides an annular variable propeller and a using method thereof, and belongs to the field of propellers. Each propeller blade comprises a main body part, a deformation part and a movable part; the deformation part is arranged in the cavity, a window is formed in the middle of the deformation part, the window is defined by two side edges, and the two side edges are located on the two sides of the center line of the paddle; when the window is opened, the two side edges are bent to be arc-shaped, and when the window is closed, the two side edges are contracted and straightened in the extending direction and abut against each other. The movable part is arranged in the window and makes contact with the two side edges at the same time, and the movable part moves along the center line and enables the two side edges to be bent into an arc shape from a straightened state at the same time. Through the annular structure of the propeller blade tip, the movement of fluid from the pressure surface to the suction surface of the propeller under the high-rotating-speed working condition is inhibited, so that the blade tip vortex is inhibited, and the propelling efficiency and acoustic performance of the propeller are improved; meanwhile, the variable framework is controlled to be bent into an arc shape or straightened through the movable part, so that the windows in the middles of the blades are opened or closed, and the propeller can reach the optimal hydrodynamic state under the working conditions of high rotating speed and low rotating speed.
本发明提出了环形可变螺旋桨及其使用方法,属于螺旋桨领域,桨叶包括主体部、形变部及活动部;形变部设置在空腔内,形变部中部设置有窗口,窗口由两个侧边围成,两个侧边位于桨叶中线两侧;窗口开启时两个侧边弯成弧形,窗口封闭时两个侧边沿其延伸方向收缩拉直并相互抵接;活动部设置在窗口内并同时与两个侧边相接触,活动部沿中线移动并使两个侧边同时从拉直状态弯成弧形;通过螺旋桨叶梢的环形结构,抑制高转速工况下流体从螺旋桨的压力面向吸力面的运动,从而抑制叶梢涡,提高螺旋桨的推进效率和声学性能;同时通过活动部控制可变骨架弯成弧形或者拉直,使桨叶中部的窗口打开或闭合,使螺旋桨在高转速和低转速工况下都达到最佳的水动力状态。
Annular variable propeller and use method thereof
环形可变螺旋桨及其使用方法
2024-07-09
Patent
Electronic Resource
Chinese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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