Gas turbine engine with a plurality of bleed valves
US7591183B2 · kind B2 · utility
110Cited by
14References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Mar 8, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A health monitoring apparatus for a mechanical system includes: a microphone arranged to receive sound from the system; and a processor adapted to process the output of the microphone. The mechanical system may be a gas turbine engine. Further, the engine may have a plurality of bleed valves, each of the bleed valves being configured such that, when open, it produces a sound which is distinguishable from the sounds produced by the other bleed valves, and the microphone being arranged to detect the sound from the bleed valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.