There is provided an acoustic treatment for an aircraft engine. The acoustic treatment has: a facing sheet configured to line a gas path portion of the aircraft engine having in use an airflow passing over the facing sheet, the facing sheet having a thickness and having perforations extending through the thickness; and a backing member spaced from the facing sheet to define a cavity between the facing sheet and the backing member, a ratio of the thickness of the facing sheet to an effective diameter of the perforations is less than or equal to 0.22.


    Access

    Download


    Export, share and cite



    Title :

    ACOUSTIC TREATMENT FOR AIRCRAFT ENGINE


    Additional title:

    TRAITEMENT ACOUSTIQUE POUR MOTEUR D`AERONEF


    Contributors:

    Publication date :

    2020-12-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS



    ACOUSTIC TREATMENT FOR AIRCRAFT ENGINE

    MESLIOUI SID-ALI | European Patent Office | 2020

    Free access

    ACOUSTIC TREATMENT DEVICE FOR AN AIRCRAFT TURBOJET ENGINE NACELLE

    CAZUC XAVIER / DEHEZ MERIL / HAMEL LAURE et al. | European Patent Office | 2020

    Free access

    Acoustic treatment device for an aircraft turbojet engine nacelle

    CAZUC XAVIER / DEHEZ MERIL / HAMEL LAURE et al. | European Patent Office | 2023

    Free access

    Numerical Simulation of Aircraft Engine Installation Acoustic Effects

    Manoha, Eric / Juvigny, Xavier / Roux, Francois | AIAA | 2005


    Acoustic treatment panel and aircraft comprising such acoustic treatment panel

    MERCAT FLORENT / RAVISE FLORIAN | European Patent Office | 2023

    Free access