Acoustic covering i.e. acoustic panel, for aircraft, has cellular structure with orifices arranged at walls of duct to allow duct to communicate with adjacent duct to create network of communicating ducts isolating non communicating ducts

摘要

The covering has a honeycomb type cellular structure (30) with a set of hexagonal shaped ducts emerging from a level of imaginary surfaces (34, 36). The structure has cuts or orifices (38) arranged at the level of lateral walls of one duct to allow the duct to communicate with adjacent duct for creating a network of communicating ducts isolating a duct or a group of non communicating ducts, where one of the communicating ducts is connected to a hot gas supply line (40).