Sandwich acoustic panel
AssigneeAirbus France
InventorsAlain Porte, Jacques Lalane
Life of this patent
Estimating the term…
Abstract
An acoustic panel with several degrees of freedom comprises a resistive layer (14), a compartmentalized structure (16) formed from at least two superposed compartmentalized layers (18) and a back reflector (17), starting from an outside face facing an incident acoustic wave. A porous separator (24) is placed between each pair of adjacent compartmentalized layers. On each of its faces, this separator is fitted with tubular guides (26) that penetrate into at least some of the cells (20) of the compartmentalized layers. This thus aligns the cells over the entire thickness of the compartmentalized structure (24), regardless of the shape of the panel.
Claims10
Sandwich acoustic panel comprising a resistive layer forming a front face of the panel, a compartmentalized structure formed from at least two superposed compartmentalized layers each comprising a network of cells, a porous separator inserted between adjacent compartmentalized layers and a reflector forming a back face of the panel, in which the porous separator is fitted with guides on each of its faces that penetrate into at least some of the cells of the compartmentalized layers adjacent to the separator, distributed over the entire surface of the separator.
Dependencies are inferred from the claim text.