Sound attenuation panel for aircraft having a combination of acoustic attenuation properties. The acoustic panel includes an acoustic structure having a cellular structure and a resistive skin and a backing skin, the acoustic panel also including at least one auxiliary acoustic device with cavities that is configured to produce additional acoustic absorption, the auxiliary acoustic device with cavities being attached to the acoustic structure and including adjacent chambers or cavities separated by shared walls, each of the chambers or cavities having perforations and being adapted to produce acoustic absorption. The combination of the acoustic structure and the auxiliary acoustic device with cavities enables combination of the acoustic absorption properties of these two types of element and an increased range of frequencies of the noise that can be attenuated by the acoustic panel without increasing its overall size.


    Access

    Download


    Export, share and cite



    Title :

    Sound attenuation panel for aircraft having a combination of acoustic attenuation properties


    Contributors:

    Publication date :

    2022-10-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



    SOUND ATTENUATION PANEL FOR AIRCRAFT HAVING A COMBINATION OF ACOUSTIC ATTENUATION PROPERTIES

    PORTE ALAIN / LALANE JACQUES / CARAZO MENDEZ ARNULFO | European Patent Office | 2019

    Free access

    SOUND ATTENUATION PANEL FOR AN AIRCRAFT

    RAVISE FLORIAN / BROCHARD WOLFGANG | European Patent Office | 2019

    Free access

    Sound attenuation panel for an aircraft

    RAVISE FLORIAN / BROCHARD WOLFGANG | European Patent Office | 2021

    Free access

    ACOUSTIC ATTENUATION PANEL FOR AN AIRCRAFT JET ENGINE NACELLE

    LE BOULICAUT LOÏC HERVÉ ANDRÉ / THOREL CHRISTOPHE / VERGER SIMON et al. | European Patent Office | 2021

    Free access

    Acoustic attenuation panel for an aircraft jet engine nacelle

    LE BOULICAUT LOÏC HERVÉ ANDRÉ / THOREL CHRISTOPHE / VERGER SIMON et al. | European Patent Office | 2023

    Free access