Planetary gear system arrangement with auxiliary oil system
US8484942B1 · kind B1 · utility
47Cited by
39References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 2012 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | May 30, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- 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.