A method for tuning a vibration response of an aircraft system (1) is disclosed, where the aircraft system (1) comprises an airframe (2) and at least one engine (10) dynamically coupled, the at least one engine (10) having an engine rotor (11) including a nose cone (20). The method comprises obtaining a range of frequencies associated with at least one resonance mode of the aircraft system (1) and adding mass within the nose cone (20) to offset at least one dominant excitation frequency of the turbofan engine (10) outside the range of frequencies associated with the at least one resonance mode of the aircraft system (1). A method of tuning dynamic coupling of an aircraft system (1) comprising an airframe (2) and an engine (10) mounted thereto is also disclosed.


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    Title :

    DYNAMIC TUNING OF AIRCRAFTS


    Additional title:

    DYNAMISCHE ABSTIMMUNG VON FLUGZEUGEN
    RÉGLAGE DYNAMIQUE D'AÉRONEFS


    Contributors:

    Publication date :

    2022-03-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES



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