A turboprop engine blade or propeller blade (10) made of a composite material comprising a fibrous reinforcement densified by a matrix, the blade or propeller blade comprising, in a spanwise direction (DL), a root (12) and an aerodynamic profile (11). The fibrous reinforcement comprises a fibrous preform having a three-dimensional weave, a root preform being located in the root (12) and an aerodynamic profile preform being located in the aerodynamic profile, the root preform and the aerodynamic profile preform being connected to each other by the three-dimensional weave. The root (12) comprises a plurality of branches. The root preform portion of the fibrous preform comprises a plurality of branches, each extending in a branch (23, 24, 25, 26) of the root (12).

    一种由复合材料制成的涡轮螺旋桨发动机叶片或螺旋桨翼片(10),其包括通过基体致密化的纤维增强件,该叶片或螺旋桨翼片沿翼展方向(DL)包括根部(12)和空气动力学轮廓(11)。纤维增强件包括具有三维编织的纤维预成型件,根部预成型部分位于根部(12)中,并且空气动力学轮廓预成型部分位于空气动力学轮廓中,根部预成型件和空气动力学轮廓预成型部分通过三维编织而彼此连接。根部(12)包括多个分支。纤维预成型件的根部预成型部分包括:多个分支,它们各自在根部(12)的分支(23、24、25、26)中延伸。


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    Title :

    Fan blade or stationary blade with cross-shaped or star-shaped composite root


    Additional title:

    具有十字形或星形复合根部的风扇叶片或静叶



    Publication date :

    2024-12-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED , Vorbereiten oder Vorbehandeln der zu verformenden Masse / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / 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 / D03D WOVEN FABRICS , Gewebe



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