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.
ACOUSTIC TREATMENT FOR AIRCRAFT ENGINE
TRAITEMENT ACOUSTIQUE POUR MOTEUR D`AERONEF
2020-12-14
Patent
Electronic Resource
English
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 DEVICE FOR AN AIRCRAFT TURBOJET ENGINE NACELLE
European Patent Office | 2020
|Acoustic treatment device for an aircraft turbojet engine nacelle
European Patent Office | 2023
|Acoustic treatment panel and aircraft comprising such acoustic treatment panel
European Patent Office | 2023
|