Sound absorption structure comprising a honeycomb structure and at least one partition tube which has at least two flats connected to walls of the honeycomb structure

Abstract

Acoustic absorption structure comprising a honeycomb structure and at least one partition tube which has at least two flats connected to walls of the honeycomb structure The subject of the invention is an acoustic absorption structure comprising at least one honeycomb structure, interposed between an acoustically resistive layer and a reflective layer, which comprises a multitude of cells (60) as well as at least one partition tube (62) positioned in one of the cells (60) and configured to delimit in the cell (60) two cavities forming two resonators, the partition tube (62) comprising at least two flats (72, 72'), the walls which delimit the cell (60) in which the partition tube (62) is inserted comprising at least first and second planar fixing walls against which the flats (72, 72') are pressed and fixed.72') of the partition tube (62) as well as at least two distant walls spaced from the side wall (74) of the partition tube (62). Figure 14,