Cellular acoustic structure for a turbojet engine and turbojet engine incorporating at least one such structure
US9670878B2 · kind B2 · utility
0Cited by
8References
7Claims
0Family size
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Key dates
| Filing date | Jul 2, 2014 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Jul 31, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cellular acoustic structure for a turbojet engine includes a closed wall. The closed wall includes at least two faces having acoustically transparent areas and acoustic reflective areas. The closed wall is filled with a plurality of cells, and the acoustic reflective areas are disposed within the closed wall so that an acoustic path of aerial sound vibrations travels through the acoustically transparent areas, penetrates inside the cells and reflects on the acoustic reflective areas. In particular, the acoustic path in some of the cells has a depth greater than a half of the thickness of the cellular acoustic structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.