Composite air cooled turbine rotor blade
US8197211B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 25, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Jan 17, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01D5/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A composite turbine rotor blade that uses the high heat resistance capability of a ceramic material along with the high strength capability of a high strength metallic material. The blade includes a metallic piece with the blade root and platform with a leading edge spar and a trailing edge spar extending from the platform. The two spars form radial cooling channels for the edges of the blade. A ceramic mid-chord piece is secured between the two spars by a T-shape tip rail piece that includes a tip rail cooling channel extending from the leading edge to the trailing edge. The tip rail piece includes a hollow radial pin that extends through the root to secure to the tip rail piece to the rest of the blade and supply cooling air to the tip rail cooling channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.