The invention belongs to the field of blade structure design and rotor dynamics design, and discloses a composite material blade with a replaceable blade tip, which comprises a blade body section and a blade tip section, one end of the blade body section close to the blade tip is a blade body joint section; one end of the blade tip section far away from the blade tip is a blade tip joint section; a blade body joint is a single lug and is arranged in a blade body skin, and the single lug is further provided with a plurality of first bolt holes penetrating through the upper surface and the lower surface of the single lug; the blade tip joint section comprises a blade tip skin, a blade tip joint and a blade tip filling block; the blade tip joint is a double-lug matched with the single lug and is arranged in the blade tip skin; second bolt holes matched with the first bolt holes are formed in the double lugs; the blade body joint and the blade tip joint are fixed through a bolt after being inserted; and the space between the blade tip joint and the blade tip skin is filled with the blade tip filling block. Openings for containing bolts are formed in the upper surface and the lower surface of the area, corresponding to the first bolt holes, of the blade body skin, and an upper airfoil covering cap and a lower airfoil covering cap cover the openings of the blade body skin so as to maintain the aerodynamic shape of the blade.

    本申请属于桨叶结构设计与旋翼动力学设计领域,公开了一种桨尖可更换的复合材料桨叶,包括:叶身段和桨尖段;叶身段靠近桨尖一端为叶身接头段,桨尖段远离桨尖一端为桨尖接头段;叶身接头为单耳,设置在叶身蒙皮内,单耳上还设有多个第一螺栓孔贯穿单耳上下表面;桨尖接头段包括:桨尖蒙皮、桨尖接头和桨尖填块;桨尖接头为与单耳相配合的双耳,设置在桨尖蒙皮内;双耳上均设有与第一螺栓孔相配合的第二螺栓孔;叶身接头与桨尖接头插接后通过螺栓固定;桨尖填块填充在桨尖接头和桨尖蒙皮之间。叶身蒙皮第一螺栓孔对应区域上下表面设有容纳螺栓的开口,上翼面口盖和下翼面口盖盖在叶身蒙皮的开口上以维持桨叶气动外形。


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    Title :

    Composite material blade with replaceable blade tip


    Additional title:

    一种桨尖可更换的复合材料桨叶


    Contributors:
    YUAN XIANG (author) / WU LINGWEI (author) / LI WEI (author) / XIONG SHAOHAI (author) / YU GUORUI (author) / JIANG JIAJI (author) / SUN LIDA (author)

    Publication date :

    2022-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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