Engine noise
US7735601B1 · kind B1 · utility
40Cited by
43References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2006 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Mar 28, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to provide noise suppression, bumps or undulations are provided on a nozzle surface in order to vary the convergent-divergent ratio between that surface and an opposed nozzle surface. By such an approach, a circumferential variation in the shock cell pattern is created and the flow is deflected so as to enhance turbulent mixing thereby suppressing noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.