Multiple piece turbine engine airfoil with a structural spar
US8033790B2 · kind B2 · utility
20Cited by
23References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Apr 30, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2230/51
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A multiple piece turbine airfoil having an outer shell with an airfoil tip that is attached to a root with an internal structural spar is disclosed. The root may be formed from first and second sections that include an internal cavity configured to receive and secure the one or more components forming the generally elongated airfoil. The internal structural spar may be attached to an airfoil tip and place the generally elongated airfoil in compression. The configuration enables each component to be formed from different materials to reduce the cost of the materials and to optimize the choice of material for each component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.