Disclosed is a flutter damper, including an acoustic liner configured for peak acoustical energy absorption at a frequency range that is greater than a frequency range associated with fan flutter, a chamber, and a piezoelectric element disposed within a first surface of the chamber, and the chamber being configured for peak acoustical energy absorption at a frequency range that is associated with one or more fan flutter modes, and wherein the piezoelectric element is operatively connected to an electronic engine control.


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    Titel :

    Flutter damper for a turbofan engine


    Beteiligte:
    MICHAELS DEREK J (Autor:in) / PRASAD DILIP (Autor:in)

    Erscheinungsdatum :

    14.04.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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    MARCHAJ IAN T / LEVASSEUR GLENN | Europäisches Patentamt | 2020

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    VARIABLE DISPLACEMENT FLUTTER DAMPER FOR A TURBOFAN ENGINE

    MARCHAJ IAN T / LEVASSEUR GLENN | Europäisches Patentamt | 2021

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    Flutter dampening acoustic liner for a turbofan engine

    MARCHAJ IAN T / MORIN BRUCE L / SADEGHI MANI et al. | Europäisches Patentamt | 2019

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    Flutter of turbofan rotors with mistuned blades

    KAZA, K. R. V. / KIELB, R. E. | AIAA | 1984


    Flutter of turbofan rotors with mistuned blades

    Kaza, R.V. / Kielb, R.E. | Tema Archiv | 1984