Vane platform rail configuration for reduced airfoil stress
US7229245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2004 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | Jul 14, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/941
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane assembly for a gas turbine engine is disclosed having lower thermally induced stresses resulting in improved component durability. The stresses in the vane assembly airfoils are lowered by increasing the flexibility of the vane platform and reducing their resistance to thermal deflection. This is accomplished by placing an opening along the vane assembly rail that reduces the effective stiffness of the platform, thereby lowering the operating stresses in the airfoils of the vane assembly. A removable seal is then placed in the opening in order to prevent undesired leakages, while maintaining the benefit of the increased platform flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.