Patent ID: 7912587
Filing Date: 2011-03-22
Classification: F01D

Abstract:
1. A method of balancing a rotor assembly comprising first and second rotors and a stack of intermediate components clamped in axial series between the first and second rotors, the first and second rotors being respectively provided with the first and second telescopically mating axially-extending circumferential faces defining a coupling, the method comprising: establishing a primary datum axis at said coupling, referencing said first and second rotors to said primary datum axis, determining a relative angular position of the first and second rotors, the so angularly positioned first and second rotors respectively providing first and second radially-extending reference faces defining an axial space therebetween for receiving the stack of intermediate components, determining a stacking angular position of each of said intermediate components using geometrical data on said intermediate components and said first and second radially-extending reference faces, and assembling the rotor assembly using the relative angular position of the first and second rotors and the stacking angular positions of the intermediate components.