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Method and apparatus for geometric rotor stacking and balancing

  • US 7,877,223 B2
  • Filed: 05/22/2009
  • Issued: 01/25/2011
  • Est. Priority Date: 09/26/2006
  • Status: Active Grant
First Claim
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1. A computer-based method for correcting imbalance of a rotor assembly for a turbine engine, comprising the steps of:

  • given a rotor assembly formed of discs and components, each disc for carrying a respective set of rotor blades or bolts-and-washers;

    using a computer, calculating for each disc and component of the rotor assembly a respective centerline deviation and an angular location of the disc and component with respect to a centerline of the rotor assembly defined based on a mathematical model of the rotor assembly; and

    iterating through the computer rotor blade and bolt-and-washer distributions and determining through the computer rotor blade and bolt-and-washer distribution throughout the rotor assembly based on (a) the calculated centerline deviations and the angular locations of the discs and components of the rotor assembly and (b) respective weight of each rotor blade or bolt-and-washer, the rotor blade or bolt-and-washer distribution providing rotor blade or bolt-and-washer locations which offset the centerline deviations by weight and result in a balanced rotor assembly.

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