Composite blade having wear resistant tip
US5112194A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Oct 18, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan blade (24) comprising an airfoil shell (30) made of a fiber reinforced relatively low wear resistance composite material has a tip portion (34) having a plurality of elongated filaments (50) of a highly wear resistant material, most advantageously rod-like boron filaments, embedded therein so as to extend inwardly from the outboard facing surface (36) of the blade (24) and substantially perpendicularly thereto. The filaments (50) comprise cutting elements which serve to rapidly cut away the sacrificial layer (40) of the surrounding fan duct (16) whenever the blade tip (34) comes into contact with the layer (40) thereby protecting the blade tip (34) from excessive wear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.