Aircraft interior acoustic resonator, aircraft interior seat comprising such a resonator, and aircraft comprising such an interior
The aircraft interior acoustic resonator addresses cabin noise by using a three-dimensional structure with Helmholtz resonators to absorb low-frequency waves, enhancing comfort and reducing noise through adjustable frequency absorption and aesthetic finishes.
FR3162904A1Pending Publication Date: 2025-12-05SAFRAN SEATS
Patent Information
- Application Number
- FR2024005446
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-12-05
Smart Images
Figure 00000000_0000_ABST
Abstract
The invention relates to an aircraft interior acoustic resonator, comprising a three-dimensional acoustic structure with elementary acoustic cells (14) arranged to form a grid of cells along a plane, each cell defining an internal volume extending along a Z direction perpendicular to the plane. The cells all open onto the same front face (12) of the structure and each includes an internal tube (14a, 14b, 14c, 14d) having a cross-section perpendicular to the Z direction and smaller than the cross-section of the cell along the same directions. The internal tube (14b) extends along the Z direction and is open at a first end (14b1) opening onto the front face of the structure and at a second opposite end (14b2) opening into the interior of the cell.The structure is configured to absorb, according to the Helmholtz resonator principle, acoustic waves propagating towards the front face of the structure. Figure for the abstract: Fig. 2C.
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Citation Information
Patent Citations
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