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Gas turbine engine and method of assembling same

  • US 7,195,447 B2
  • Filed: 10/29/2004
  • Issued: 03/27/2007
  • Est. Priority Date: 10/29/2004
  • Status: Expired due to Fees
First Claim
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1. A method for assembling a gas turbine engine, said method comprising:

  • providing a low-pressure turbine inner rotor that includes a first plurality of turbine blade rows configured to rotate in a first direction;

    providing a low-pressure turbine outer rotor that includes a second plurality of turbine blade rows configured to rotate in a second direction that is opposite the first direction;

    coupling a turbine mid-frame assembly including a plurality of spokes within the engine such that the spokes are spaced axially forward of the inner rotor;

    coupling a plurality of yokes to a hub assembly such that the plurality yokes are coupled to the plurality of spokes using at least one expandable pin;

    coupling a bearing between the turbine mid-frame assembly and the inner rotor such that the inner rotor is rotatably coupled to the turbine mid-frame; and

    adjusting the plurality of spokes to align the bearing in a radial direction.

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