ACOUSTIC PROCESSING STRUCTURE PARTICULARLY ADAPTED TO THE AIR INLET OF AN AIRCRAFT NACELLE

摘要

The invention relates to an acoustic processing structure provided at a leading edge on which flows an aerodynamic stream, in particular at the air inlet of an aircraft nacelle, wherein said acoustic processing structure includes, from the outside to the inside, at least one acoustically resistive sub-structure (30), at least one cellular sub-structure including strips (32) of cells arranged in a direction substantially perpendicular to the flow direction of the aerodynamic stream, and at least one reflecting structure (34), characterised in that each strip (32) includes a first so-called bearing portion insulating the strips from one another and having a U-shape in the longitudinal direction, wherein the open face opposite the bottom of the U shape is pressed against the acoustically resistive sub-structure (30), and at least a second so-called partitioning portion for partitioning the space defined by the bearing portion and the acoustically resistive sub-structure (30) into cells.