A fiber-reinforced plastic propeller for unmanned aerial vehicles according to an embodiment of the present invention comprises: a foam core located inside; a first prepreg layer located on the surface of the foam core; a porous mesh layer located on the first prepreg layer; and a second prepreg layer located on the mesh layer. By introducing a mesh layer with a thickness gradient, the propeller is free from surface pinholes that frequently occur in compression molding methods. Through this, a beautiful appearance can be achieved, improving the aerodynamic performance and efficiency of the propeller.

    본 발명의 일 실시예에 따른 무인항공기용 섬유강화플라스틱 프로펠러는 내부에 위치한 폼코어, 폼코어의 표면에 위치한 제1 프리프레그층, 제1 프리프레그층의 상에 위치한 다공성의 메쉬층 및 메쉬층 상에 위치한 제2 프리프레그층을 포함하고, 두께 구배를 가진 메쉬층 도입을 통해서 압축 성형 공법에서 빈발하는 표면 핀홀로부터 자유로우며, 이를 통해 미려한 외관을 달성할 수 있어 프로펠러의 공기역학적 성능 및 효율의 향상이 가능하다.


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    Title :

    FIBER REINFORCED PLASTIC PROPELLERS FOR UNMANNED AERIAL VEHICLE AND MANUFACTURING METHOD THEREOF


    Additional title:

    무인항공기용 섬유강화플라스틱 프로펠러 및 이의 제조방법


    Contributors:
    CHO IN MOK (author) / KIM HWANG YONG (author)

    Publication date :

    2023-10-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29K Index-Schema für Formmassen oder Materialien für Verstärkungen, Füllstoffe oder vorgeformte Teile, z.B. Einlagen in Verbindung mit den Unterklassen B29B, B29C oder B29D , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS




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    CHO IN MOK / KIM HWANG YONG | European Patent Office | 2020

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