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Differential geared turbine engine with torque modulation capability

  • US 6,895,741 B2
  • Filed: 06/23/2003
  • Issued: 05/24/2005
  • Est. Priority Date: 06/23/2003
  • Status: Expired due to Fees
First Claim
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1. A gas turbine engine comprising:

  • a compressor and a turbine in serial fluid communication;

    a rotatable load;

    a differential gearing system for receiving power from the turbine and transmitting power to the compressor and the rotatable load;

    a first motor/generator mechanism coupled to the compressor for operating either as a motor to drive the compressor, or as a generator to take power from the compressor;

    a second motor/generator mechanism coupled to the rotatable load for operating either as a motor to drive the rotatable load, or as a generator to take power from the rotatable load; and

    the first and second motor/generator mechanisms being adapted for selectively modulating the torque versus speed characteristics of the compressor and the rotatable load, and for modulating the rotational speed relationship between the turbine, compressor and the rotatable load.

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