The invention relates to a propeller blade or airfoil (10) for a turboprop engine, made of a composite material and comprising a fibre reinforcement of matrix densification, the propeller blade or airfoil 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, the fibrous preform having a root preform portion present in the root (12) and an aerodynamic profile preform portion present in the aerodynamic profile (11), the root and aerodynamic profile preform portions being connected to each other by the three-dimensional weave. The root preform portion of the fiber preform comprises a breach at the junction that delimits a shell inside the root, which shell forms a cavity (14) that opens at the free end (12a) of the root (12).
本发明涉及一种用于涡轮螺旋桨发动机的螺旋桨桨叶或翼型(10),该螺旋桨桨叶或翼型由复合材料制成和包括基质致密化的纤维增强,该螺旋桨桨叶或翼型在顺翼展方向(DL)上包括根部(12)和空气动力学轮廓(11)。该纤维增强包括具有三维编织的纤维预成型件,该纤维预成型件具有存在于根部(12)中的根部预成型件部分以及存在于空气动力学轮廓(11)中的空气动力学轮廓预成型件部分,根部和空气动力学轮廓预成型件部分通过三维编织彼此连接。纤维预成型件的根部预成型件部分包括接合处的裂口,该裂口界定根部内部的壳体,该壳体形成腔体(14),该腔体在根部(12)的自由端(12a)处开口。
Propeller blade or airfoil with hollow composite root
具有中空复合根部的螺旋桨桨叶或翼型
2024-12-27
Patent
Electronic Resource
Chinese
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 / 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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