Variable pitch change control method
US10934866B2 · kind B2 · utility
1Cited by
15References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 2018 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine includes a fan having a plurality of fan blades configured to rotate about a central axis of the gas turbine engine. Each fan blade is configured to pivot about a pivot axis that extends radially away from the central axis to vary a pitch of the fan blade. The fan further includes a counterforce system configured to resist forces that urge the fan blades away from their pitch positions during operation of the gas turbine engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.