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Gas turbine and method of operating a gas turbine

  • US 9,121,309 B2
  • Filed: 06/10/2006
  • Issued: 09/01/2015
  • Est. Priority Date: 06/10/2006
  • Status: Active Grant
First Claim
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1. A method for operating an aircraft engine including at least one compressor, one combustion chamber, and at least one turbine coupled to the at least one compressor via a shaft, comprising the steps of:

  • generating electricity during operation of the aircraft engine in a generator;

    shutting down the aircraft engine; and

    once the aircraft engine is shut down, driving a low pressure turbine the at least one turbine for a predetermined time period in order to thereby effect a uniform cooling of the rotor, the generator switching to a motor operation and driving the at least one rotor at a speed of between 0.1 rpm and 10 rpm during the predetermined time period, to reduce a temperature of the rotor before restarting the engine.

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