Noise reduction sandwich panel, notably for aircraft turbojet engine
US6536556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Oct 17, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Noise reduction sandwich panel, notably for an aircraft turbojet engine.In order to produce a noise reduction sandwich panel having a structure with two degrees of freedom, inserted separative components (20) are placed into the hexagonal cells (16) of the unique waffle core of the panel. More specifically, the separative components (20) have an substantially circular external peripheral edge, which allows them to be easily assembled, in spite of the deformations of the walls (18) of the cells (16) due to manufacturing tolerances and to the optional forming of the waffle core. Advantageously, several separative components (20) are supported by a same positioning unit (22), which then allows relative displacement between the separative components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.