Patent ID: 7572101
Filing Date: 2009-08-11
Classification: F01D,F04D,Y02T

Abstract:
1. A rotor assembly comprising: a disk comprising a plurality of circumferentially-spaced blade root slots defined therein; and a plurality of blades comprising a first set of blades and a second set of blades, wherein at least one blade of the first set of blades comprises a different geometric parameter from the remaining plurality of blades, each of said plurality of blades comprises a root, a tip, and an airfoil extending therebetween, wherein a processor is programmed to: receive at least one of a moment weight of each blade in the first set of blades and a geometric parameter of each blade in the first set of blades; receive at least one of a moment weight of each blade in the second set of blades and a geometric parameter of each blade in the second set of blades; calculate a combined vector sum of the moment weight and the geometric parameter of each blade in the first set of blades and the moment weight and the geometric parameter of at least one blade in the second set of blades; and determine a blade map based on at least one of the moment weight and the geometric parameter of each blade in the first set of blades, and at least one of the moment weight and the geometric parameter of at least one blade in the second set of blades, the blade map indicating a slot for positioning each of said first set of blades that minimizes a vector sum of a moment weight of said first set of blades: wherein said first set of blades is positioned within the determined slot based on the determined blade map.