Reverse core gear turbofan
US9239004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2012 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Nov 20, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/053
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine has a fan at an axially outer location. The fan rotates about an axis of rotation. The fan delivers air into an outer bypass duct, and across a booster fan positioned radially inwardly of the outer bypass duct. The booster fan delivers air into a radially middle duct, and across a cold turbine into a radially inner core duct being directed into a compressor. From the compressor, air flows axially in a direction back toward the fan through a combustor section, and across an exhaust of the turbine section as directed into the middle duct. A gear reduction drives the fan from a fan drive turbine section. A method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.