| 摘要 |
A protection element (20) containing a spring steel strip (22) is bent to have a tighter curvature than the curvature at the leading edge of a fan blade (10). The protection element 20 is then fixed to the leading edge of the fan blade (10) over an area of maximum erosion. Rubber or another elastomer (24) can be extruded over the strip (22) before or after it is fixed to the fan blade (10) or the strip (22) can incorporate an outer hardened layer to resist erosion. Attachment of the strip (22) to the blade (10) is advantageously accomplished using rivets (30) or screws at spaced locations along the blade (10) at the leading edge of the blade (10). <IMAGE> |
