ACOUSTIC ATTENUATION STRUCTURE WITH A PLURALITY OF ATTENUATION DEGREES FOR A PROPULSION ASSEMBLY OF AN AIRCRAFT

摘要

The invention particularly relates to an acoustic attenuation structure for a propulsion assembly of an aircraft, comprising an acoustically reflective wall and a sandwich panel, the sandwich panel comprising a honeycomb structure surrounded by two acoustically porous skins, a rear skin and a skin, the acoustically reflective wall and the sandwich panel being arranged in such a way as to be separated by a layer of air.