Epicyclic gear train for turbo fan engine
US8205432B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2007 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Nov 29, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C7/36
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A two-stage turbofan system for use in a gas turbine engine comprises a first-stage fan shaft, a second-stage fan shaft, a stationary torque tube and a gear system. The second-stage fan shaft connects with a drive shaft in the gas turbine engine such that the second-stage fan shaft is driven at the speed of the drive shaft. The stationary torque tube is connected with a fan case in the gas turbine engine. The gear system is connected to the second-stage fan shaft and the torque tube. The first-stage fan shaft extends from the gear system such that the first-stage fan shaft is driven at a speed reduced from that of the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.