Soundproofing panel with beads, and a method of manufacture
AssigneesSnecma Moteurs, Ateca
InventorsAlain Dravet, Georges Riou, Jacques Julliard, Osmin Delverdier, Philippe Vie
Life of this patent
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Abstract
A soundproofing panel (2) comprises a core (4) sandwiched between a solid wall (6) and a porous wall (8), the core being connected to the walls and comprising partitions (12) extending in the thickness direction between the two walls so as to form cells (10) each cell containing at least one sound energy dissipating layer (14), the dissipating layers (14) being constituted by hollow spherical beads (20) having mutually contacting walls that are porous and micro-perforated, and being held in position in the thickness direction between the two walls (6, 8) by nets (22) that are secured to the partitions.
Claims10
A soundproofing panel (2, 30) comprising a core (4) sandwiched between a solid wall (6) and a porous wall (8), said core being connected to said walls and including partitions (12) extending in the thickness direction between the two walls and forming cells (10), each cell containing at least one sound energy dissipating layer (14), said dissipating layers (14) being constituted by hollow spherical beads (20) with porous walls in mutual contact, wherein said beads have walls that are micro-perforated and that are held in position in the thickness direction between the two walls (6, 8) by nets (22) secured to said partitions.
Dependencies are inferred from the claim text.