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Magnetically coupled contra-rotating propulsion stages

  • US 8,464,511 B1
  • Filed: 01/06/2012
  • Issued: 06/18/2013
  • Est. Priority Date: 01/06/2012
  • Status: Active Grant
First Claim
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1. A turbomachine comprising:

  • a turbine shaft rotationally mounted along an axis;

    a first rotor rotationally coupled to the turbine shaft and coaxially arranged about the axis;

    a first propulsion stage rotationally coupled to the first rotor, opposite the turbine shaft;

    a second rotor coaxially arranged about the first rotor;

    a second propulsion stage rotationally coupled to second rotor, opposite the turbine shaft and adjacent the first propulsion stage;

    a magnetic stator coaxially arranged between the first rotor and the second rotor and forming a magnetic coupling between the first rotor and the second rotor to drive the second propulsion stage in contra-rotation with respect to the first propulsion stage.

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