A spar for a propeller blade comprises central structural member (21) extending from a root to a tip (10) of the spar (22). A first portion (22a) of the central structural member extends from the root of the spar (22) and a second portion (22b) extends from the tip (40) and adjoins the first portion (22a). The central structural member (21) includes a first plurality of plies of composite material on a pressure side (4) thereof and a second plurality of plies of composite material on a suction side (8) thereof wherein the first plurality of plies are in contact with the second plurality of plies in the second portion (22b) from a leading edge (30) to a trailing edge thereof (32). A plurality of yarns extends through the central structural member in at least the second portion.


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    Title :

    REINFORCED PROPELLER BLADE AND SPAR


    Additional title:

    VERSTÄRKTES PROPELLERBLATT UND HOLM
    PALE D'HÉLICE ET LONGERON RENFORCÉS


    Contributors:
    AMAT PASCAL (author)

    Publication date :

    2020-07-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge



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