The invention relates to a propeller blade (10) for a propeller engine, made of a composite material, comprising a matrix-densified fibrous reinforcement, comprising a root (12) and an aerodynamic profile (11) in the direction of its spanwise direction (DL). The fibrous reinforcement includes a fibrous preform having a three-dimensional weave, the fibrous preform having a root preform portion and an aerodynamic profile preform portion. The fibrous preform comprises a partition defining a recess forming a cavity (14) extending both into the root (12) and into the aerodynamic profile (11). A spar (130) is present in the cavity (14), the spar including an aerodynamic profile forming portion (131) positioned in a first portion (142) of the cavity (14) and a root forming portion (132) positioned in a second portion (141) of the cavity (14). The root (12) has a rotationally symmetrical shape.

    本发明涉及一种用于螺旋桨发动机的螺旋桨叶片(10),该螺旋桨叶片由复合材料制成,包括基体致密化的纤维增强体,该螺旋桨叶片在其展向(DL)方向上包括根部(12)和空气动力学轮廓(11)。纤维增强体包括具有三维编织的纤维预成型件,该纤维预成型件具有根部预成型件部分和空气动力学轮廓预成型件部分。纤维预成型件包括界定凹部的分隔件,该凹部形成腔体(14),既延伸到根部(12)中又延伸到空气动力学轮廓(11)中。翼梁(130)存在于腔体(14)中,该翼梁包括定位于腔体14的第一部分(142)中的空气动力学轮廓成形部分(131)和定位于该腔体的第二部分(141)中的根部成形部分(132)。根部(12)具有旋转对称的形状。


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    Title :

    Propeller blade with hollow composite root


    Additional title:

    具有空心复合材料根部的螺旋桨叶片



    Publication date :

    2025-05-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B64C AEROPLANES , Flugzeuge / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand



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