The invention discloses a composite propeller blade of a propeller. A circular truncated cone I, a cylinder I, a circular truncated cone II, a transition cylinder II and a curved surface consistent with a propeller body molded surface in bending are sequentially arranged at the small end of a metal propeller root from the back of a tail end cylinder of a large end; an oval end protruding from thecenter of the large end of the foam core matched with the bent shape of the propeller body is inserted into an oval groove in the center of the small end of the metal propeller root; the starting endsof the carbon beams are tightly attached to and wrap the circular truncated cone I, become two parts from the curved surface and are laid along rectangular grooves in the working surface and the non-working surface of the foam core; the skin wraps the curved surface of the metal propeller root and all parts of the propeller body from the transition cylinder II; the front edge filling foam and therear edge filling foam are filled in front edge and rear edge gaps between the skin and the metal propeller root; and the carbon fiber cloth is filled in the skin, the carbon beam and the foam core and all gaps among the skin, the carbon beam and the foam core, and the carbon beam winding belt is wound on the carbon beam portion without skin wrapping. The composite propeller blade disclosed by the invention is light in weight, reliable in structure, excellent in aerodynamic performance and good in paddle root fatigue resistance.

    本发明公开了一种螺旋桨复合材料桨叶,金属桨根小端从大端的末端圆柱后面开始依次是圆台Ⅰ、圆柱Ⅰ、圆台Ⅱ、过渡圆柱Ⅱ和与桨身型面弯曲一致的曲面;与桨身弯曲形状相匹配的泡沫芯大端中心突出的椭圆形端头插接在金属桨根小端中心的椭圆形槽内;碳梁起始端紧贴包裹在圆台Ⅰ上,从曲面起开始变为两片,沿着泡沫芯工作面和非工作面的矩形槽铺装;蒙皮从过渡圆柱Ⅱ起始包裹金属桨根的曲面和桨身的所有部分;前、后缘填充泡沫填充在蒙皮与金属桨根之间的前、后缘空隙内;碳纤维布填满在蒙皮、碳梁和泡沫芯两者和三者之间的所有空隙内,碳梁缠绕带缠绕在无蒙皮包裹的碳梁部分。本发明桨叶重量轻、结构可靠、气动性能优良、桨根抗疲劳性能好。


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    Title :

    composite propeller blade of propeller


    Additional title:

    一种螺旋桨复合材料桨叶


    Contributors:
    XI QINGWEI (author) / WANG HUILING (author) / CAI MENG (author)

    Publication date :

    2021-03-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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