Governor checkout apparatus and method
US4869106A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Sep 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D13/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An overspeed governor for adjusting the blade pitch of a propulsor in an unducted fan aircraft engine to prevent propulsor overspeed comprises a flyweight governor which is rotated in response to rotation of the propulsor, a governor pilot valve with a valve spool which is axially moved in response to actuation of the flyweight governor for adjusting the blade pitch of the propulsor, and a governor checkout apparatus which sensitizes the flyweight governor so that it is actuated to maintain a substantially lower propulsor rotative speed during a start-up operation of the engine as compared with during normal operation, whereby the operation of the governor can be checked out during start-up operation of the aircraft engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.