Method of fabricating a split compressor case
US5063661A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1990 |
| Grant date | Nov 12, 1991 |
| Priority date | — |
| Expiry date | Jul 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49861
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for fabricating a split compressor case for a gas turbine engine is described which comprises the steps of assembling the two axial sections of the split case along corresponding flanges of the sections with a flat shim disposed between corresponding flanges and machining this first assembly to preselected contour, determining the degree of ovalization of the first assembly at the engine operating temperature as a function of axial extent of the assembly, assembling the two axial sections with a pair of tapered shims each having thickness which varies along the length and width thereof in correspondence with the determination of ovalization of the first assembly as a function of axial extent whereby ovalization is substantially eliminated at the engine operating temperature in an assembly of the axial sections and tapered shims.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.