The invention relates to a propeller blade or vane (10) for a turboprop engine, made from composite material and comprising a matrix-densified fibrous reinforcement, the propeller blade or vane comprising, in the direction of its span (DL), a root (12) and an aerodynamic profile (11). The fibrous reinforcement comprises a fibrous preform having three-dimensional weaving, with a root preform portion and an aerodynamic-profile preform portion. The fibrous preform comprises a disconnected portion delimiting a housing that forms 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 comprising an aerodynamic-profile shaping portion (131) positioned in a first portion (142) of the cavity (14) and a root shaping portion (132) positioned in a second portion (141) of the cavity. The root (12) has a rotationally symmetrical shape.
AUBE OU PALE D'HELICE AVEC PIED COMPOSITE CREUX
PROPELLER BLADE OR VANE HAVING A HOLLOW COMPOSITE ROOT
PROPELLERBLATT ODER -SCHAUFEL MIT HOHLEM VERBUNDFUSS
23.07.2025
Patent
Elektronische Ressource
Französisch
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 |