Broadband acoustic panels coupled with large secondary cavities to attenuate low frequencies
US9732677B1 · kind B1 · utility
16Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 2016 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | May 12, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2033/0206
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A structural panel for an aircraft nacelle may comprise a core between a perforated skin and a septum. A plurality of dividing walls may extend between the septum and a backskin to define a plurality of cavities. Each cavity may be in fluid communication with a plurality of cells in the core through the septum. The cells and the cavities may attenuate noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.