Separation-resistant inlet duct for mid-turbine frames
US8061980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2008 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Sep 22, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A transition duct assembly for a gas turbine engine includes an outer diameter surface and an inner diameter surface. A substantially annular flowpath having a radial offset is defined between the inner diameter surface and the outer diameter surface. A curvature distribution of the inner diameter surface includes a first region of increasing slope in a radial direction and a second region of decreasing slope in the radial direction adjacent to and downstream of the first region. The first and second regions are configured to reduce flow separation along the outer diameter surface of fluid traveling along the substantially annular flowpath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.