Patent ID: 8079443

Claim:
A trim panel for an aircraft cabin, comprising: a. an exterior first sound attenuating layer, including an outer layer that includes a flexible high mass material configured to face an exterior of aircraft cabin and a foam layer affixed to an interior surface of the flexible high mass material; b. a rigid structural layer coupled to the first sound attenuating layer, having an exterior side and an opposite interior side, the structural layer defining a plurality of passages that each open to both the exterior side and the interior side, thereby creating a hydrodynamic shortcut therethrough that inhibits radiation of noise by the structural layer; and c. an interior second sound attenuating layer coupled to the structural layer, the second sound attenuating layer having a high sound absorption characteristic, the second sound attenuating layer including an air permeable foam layer affixed to the interior side of the structural layer and a porous décor material layer affixed to the foam layer and configured to face an interior of the aircraft cabin whereby air can permeate through the structural layer and the second sound attenuating layer.