Planetary gear system arrangement with auxiliary oil system
US9995174B2 · kind B2 · utility
4Cited by
44References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2012 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Mar 8, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7297
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine has a fan, first and second compressor stages, first and second turbine stages. The first turbine stage drives the second compressor stage as a high spool. The second turbine stage drives the first compressor stage as part of a low spool. A gear train drives the fan with the low spool, such that the fan and first compressor stage rotate in the same direction. The high spool operates at higher pressures than the low spool. A lubrication system is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.