Method of making an airfoil
US4583274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1984 |
| Grant date | Apr 22, 1986 |
| Priority date | — |
| Expiry date | Sep 20, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49904
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved method of making an airfoil includes stacking plies in two groups. A separator ply is positioned between the two groups of plies. The groups of plies and the separator ply are interconnected to form an airfoil blank. The airfoil blank is shaped, by forging or other methods, to have a desired configuration. The material of the separator ply is then dissolved or otherwise removed from between the two sections of the airfoil blank to provide access to the interior of the airfoil blank. Material is removed from inner sides of the two separated sections to form core receiving cavities. After cores have been placed in the cavities, the two sections of the airfoil blank are interconnected and the shaping of the airfoil is completed. The cores are subsequently removed from the completed airfoil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.