Acoustic liner for gas turbine engine components
US10174675B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 30, 2015 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Nov 13, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/963
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A single degree of freedom (SDOF) acoustic liner includes a porous face sheet, a substantially imperforate back sheet generally parallel to and opposing said porous face sheet and defining a thickness therebetween, and an acoustic core layer of contiguous adjacent resonant cavities disposed between the porous face sheet and the imperforate back sheet. The acoustic core layer includes a first resonant cell having a first internal volume therein and a second resonant cell having a second internal volume therein different than the first internal volume. A cell partition wall extends between the porous face sheet and the imperforate back sheet, and separates and seals the first resonant cell from the second resonant cell. In a thickness direction, and perpendicular to a plane generally parallel with the porous face sheet and the substantially imperforate back sheet, the first internal volume overlaps the second internal volume over the cell partition wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.