ACOUSTIC PANEL Russian patent published in 2022 - IPC G10K11/168 

FIELD: acoustics.

SUBSTANCE: acoustic panel for an aircraft comprises a sound-absorbing sheet and multiple cavities; the sound-absorbing sheet has a first surface, a second surface opposite the first surface, and an end surface connecting the first and second surfaces; the first sheet passes at least over a section of the first surface and over the end surface, and the second sheet passes over the second surface and the end surface; wherein the first and second sheets are connected so as to pass a tensile force between the sheets. The panel herein is curved so that the first surface is a radially external surface and the second surface is a radially internal surface, wherein the end surface is annular or arc-shaped, and the first sheet section and the second sheet section form a single continuous sheet.

EFFECT: reduction in the probability of separation of layers of a sound-absorbing sheet with two layers separated by a divider, and, as a result, increase in the structural reliability.

11 cl, 8 dwg