Turbine engine noise suppression apparatus and methods
US4747467A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1986 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Apr 1, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2490/155
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A compact turbine engine exhaust gas noise suppressor has a housing having a first chamber, a second chamber having an outlet and communicating with the first chamber through a transfer passage, and a third chamber communicating with the first chamber through a perforated dividing wall and having a resonant sound attenuator positioned therein. A sound absorbing member is positioned in the second chamber to create therein a serpentine flow path extending between the transfer passage and the outlet. The exhaust gas noise is attenuated by flowing the exhaust gas into the first chamber through a duct into which ambient cooling air is educted, and then forcing the exhaust gas outwardly through the serpentine flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.