Acoustic absorption structure comprising cells with at least one annular canal, aircraft propulsion system comprising said structure
US11295717B2 · kind B2 · utility
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2References
12Claims
0Family size
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Key dates
| Filing date | Oct 22, 2019 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | May 13, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C7/045
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An acoustic absorption structure includes: a porous layer in contact with a medium through which the sound waves travel, a cellular layer including a plurality of cells, which has at least one exterior annular canal open towards the porous layer, and a reflective layer. An aircraft propulsion system having at least one such acoustic absorption structure is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.