| 主权项 |
1. A trim panel (10) for the interior (11) of an aircraft (E), the panel having a multilayer structure and comprising:
an outer layer (12) made of material impervious to air, and which is positioned in use facing the fuselage of said aircraft (E); an inner layer (13) made of trim material, and which in use defines said interior (11); a structural layer (14) interposed between said inner and outer layer (13, 12) and comprising a number of adjacent cells (15) defining respective air passages (16); and acoustic energy dissipating material (17, 21), also interposed between said inner (13) and outer (12) layer; said inner layer (13) being made of porous material allowing airflow towards said acoustic energy dissipating material (17, 21); characterized in that said cells (15) are partly filled with said acoustic energy dissipating material (21), wherein said acoustic energy dissipating material forms a further layer (17) interposed between said structural layer (14) and said inner layer (13), wherein an air gap is provided in each of said cells (15) of said structural layer (14) between said further layer (17) and said acoustic energy dissipating material (21) located in said cells (15), and wherein said panel comprises, between said structural layer (14) and said further layer (17), an intermediate layer (18), which is made of the same material as said outer layer (12) and is in the form of a grille with through openings (20). |
