Mid turbine frame system for gas turbine engine
US8061969B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2008 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Jun 3, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D25/28
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine mid turbine frame having an inner case supporting at least one bearing and at least three spokes extending radially outwardly to an outer case, the mid turbine frame having an interturbine duct extending through the mid turbine frame, the interturbine duct spaced axially closer to an upstream turbine disc than a bearing supporting structure of the mid turbine frame and mounted axially slidingly relative to the bearing supporting structure to substantially isolate the bearing supporting structure from axial loads, for example such as disc loads incurred in the unlikely event a turbine disc shaft shears within the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.