The invention is related to a rotorcraft 1 with at least one main rotor 1a and at least one counter-torque rotor 11a, comprising: at least one duct-type portion 10 provided with a shroud 3 that defines at least one transverse duct 6, said at least one counter-torque rotor 11a comprising a plurality of counter-torque rotor blades 13 and being rotatably arranged within said at least one transverse duct 6, and said shroud 3 being equipped in the region of said at least one transverse duct 6 at least partly with a liner arrangement 3a, said liner arrangement 3a being at least adapted for tonal and broadband sound absorption.


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    Titel :

    Rotorcraft with at least one main rotor and at least one counter-torque rotor


    Weitere Titelangaben:

    Drehflügler mit mindestens einem Hauptrotor und mindestens einem Rotor zum Drehmomentausgleich
    Giravion avec au moins un rotor principal et au moins un rotor anti-couple


    Beteiligte:

    Erscheinungsdatum :

    2019-01-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge



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