Aircraft turboprop engine propeller pitch control system including a controllable feather valve
US10807701B2 · kind B2 · utility
0Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/64
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A propeller pitch control system for a turboprop engine of an aircraft includes a negative torque sensor, a full feather control valve assembly, and a feather valve assembly. The feather valve assembly is responsive to fluid pressures from the negative torque sensor and the control valve assembly to move between a plurality of positions. An engine control unit or a manual user interface can also be used to control the position of the feather.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.