The invention is related to a flexbeam unit (3) for a multi-blade rotor (1) of a rotary wing aircraft, said flexbeam unit (3) defining a predetermined number of torsion elements (5a, 5b, 5c, 5d, 5e) that are connectable with associated rotor blades (2a, 2b, 2c, 2d, 2e), at least one torsion element (5d) comprising a flexbeam element (4) having an associated longitudinal direction (4a) and comprising inner layers (17a, 17b) of a first fiber reinforced material that are embedded between outer layers (10) of a second fiber reinforced material, said outer layers (10) being composed of main plies (10a, 10b) comprising unidirectional fibers and said inner layers defining a cross section profile center (4b) in said associated longitudinal direction (4a), said cross section profile center being composed of interconnected bias plies (12a, 12b, 12c, 13a, 13b, 13c, 13d) comprising fibers that are oriented transversely relative to said unidirectional fibers.


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    Title :

    Flexbeam unit for a bearingless or a hinge- and bearingless multi-blade rotor of a rotary wing aircraft


    Additional title:

    Flexbeam-Einheit für einen lagerlosen oder scharnierlosen und lagerlosen mehrflügeligen Rotor eines Drehflüglers
    Unité de flexion pour rotor à pales multiples sans palier ou sans palier et charnière et aéronef à voilure tournante


    Contributors:

    Publication date :

    2015-07-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64C AEROPLANES , Flugzeuge / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS



    Flexbeam unit for a bearingless or a hinge- and bearingless multi-blade rotor of a rotary wing aircraft

    PFALLER RUPERT / SCHULZ MARTIN / BODEMANN TOBIAS | European Patent Office | 2018

    Free access



    FLEXBEAM UNIT FOR A BEARINGLESS OR A HINGE- AND BEARINGLESS MULTI-BLADE ROTOR OF A ROTARY WING AIRCRAFT

    PFALLER RUPERT / SCHULZ MARTIN / BODEMANN TOBIAS | European Patent Office | 2015

    Free access