Acoustic attenuation structure with a plurality of attenuation degrees for a propulsion assembly of an aircraft
US10875659B2 · kind B2 · utility
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1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2018 |
| Grant date | Dec 29, 2020 |
| Priority date | — |
| Expiry date | Apr 26, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present disclosure particularly relates to an acoustic attenuation structure for a propulsion assembly of an aircraft. The acoustic attenuation structure includes an acoustically reflective wall and a sandwich panel. The sandwich panel includes a honeycomb structure surrounded by two acoustically porous skins, a rear skin and a skin. The acoustically reflective wall and the sandwich panel are arranged in such a way as to be separated by a layer of air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.