Fan blade compliant layer and seal
US6398499B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Mar 19, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/611
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A compliant shim for use between the root of a gas turbine fan blade and a dovetail groove in a gas turbine rotor disk to reduce fretting therebetween. The compliant shim has first and second slots for engaging tabs extending from the fan blade root. The slots and tabs cooperate to hold the shim during engine operation. An oxidation layer covers the compliant shim. The shim is augmented with an upstanding wall and a seal element to seal the gap that exists between platform edges of adjacent fan blades. This simple combination solves two complex problems, fatigue of fan assembly parts and loss of operating efficiency caused by fluid flow leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.