Patent ID: 9121284
Filing Date: 2015-09-01
Classification: F01D,F04D,F05D

Abstract:
1. A set of vanes for use in a gas turbine, the set comprising: at least a first vane having a first camber, the first vane having an airfoil-shaped body portion having a plurality of cavities on at least one surface thereof, the first vane having a first degree of coverage by a first cover portion, wherein a degree of coverage represents an extent to which cavities of a surface are covered, the first vane having a first frequency response with at least a first mode; and at least a second vane having a second camber different from the first camber, the second vane having an airfoil-shaped body portion having a plurality of cavities on at least one surface thereof, the second vane having a second degree of coverage by a second cover portion, the second vane having a second frequency response with at least a second mode; wherein the first camber differs from the second camber and the second degree of coverage differs from the first degree of coverage.