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Gas turbine engine and active balancing system

  • US 9,638,056 B2
  • Filed: 12/04/2013
  • Issued: 05/02/2017
  • Est. Priority Date: 03/12/2013
  • Status: Active Grant
First Claim
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1. A gas turbine engine, comprising:

  • a compressor;

    a combustor in fluid communication with the compressor;

    a turbine in fluid communication with the combustor; and

    an active balancing system configured to balance at least a portion of the gas turbine engine during operation of the gas turbine engine, including;

    a rotor component positioned in the turbine and coupled to a shaft of the gas turbine engine for rotation about an axis, the rotor component having a disk and an arm extending axially from the disk, a first magnetic element coupled to the arm and spaced apart from the shaft;

    a static engine component having a second magnetic element positioned radially inward of the first magnetic element and spaced apart from the shaft, wherein the second magnetic element and the first magnetic element are disposed to be positioned opposite each other at one point during a rotation of the rotor component;

    a vibration sensor configured to sense a vibration in the gas turbine engine; and

    a controller configured to execute program instructions to activate one or both of the first magnetic element and the second magnetic element to selectively attract one to the other or to selectively repel one from the other based on an output of the vibration sensor to reduce the vibration.

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