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Systems and methods involving multiple torque paths for gas turbine engines

  • US 8,621,871 B2
  • Filed: 05/08/2012
  • Issued: 01/07/2014
  • Est. Priority Date: 10/09/2007
  • Status: Active Grant
First Claim
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1. A method for reducing overspeed potential of a turbine of a gas turbine engine, comprising:

  • providing a first load associated with a compressor to the turbine via a first torque path and a shaft;

    providing a second load to the turbine via a second torque path and the shaft; and

    operating the turbine such that;

    mechanical failure of a component defining at least a portion of the first torque path does not inhibit the second load from being applied to the turbine via the second torque path and the shaft; and

    mechanical failure of a component defining the second torque path does not inhibit the first load from being applied to the turbine via the first torque path and the shaft;

    wherein the shaft is supported by a thrust bearing that is connected to an intersection between the first torque path and the shaft, and wherein the thrust bearing comprises a tapered roller bearing and is located aft of the first torque path.

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