Turbofan engine with acoustic treatment
US11591958B2 · kind B2 · utility
1Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2020 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Mar 13, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided a turbofan engine having: a fan rotatable about an axis within a case; a first acoustic treatment lining a first portion of the case upstream of the fan; and a second acoustic treatment lining a second portion of the case downstream of the fan, the first acoustic treatment having different noise-attenuating characteristics relative to the second acoustic treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.