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Tail cone generator with integral speed increasing gearbox

  • US 9,917,490 B2
  • Filed: 11/21/2014
  • Issued: 03/13/2018
  • Est. Priority Date: 11/21/2014
  • Status: Active Grant
First Claim
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1. A gas turbine engine, comprising:

  • a tailcone;

    a low-pressure spool at least partially outside the tailcone;

    an input shaft coupled to the low-pressure spool and at least partially inside the tailcone;

    a differential coupled to the input shaft and disposed inside the tailcone;

    wherein the differential is aft of the input shaft;

    a generator coupled to the differential and disposed inside the tailcone;

    an oil pump disposed radially outward from the differential and configured to pump oil through the generator along an axis of rotation to the differential with the oil pump, the differential, and the generator disposed completely inside the tailcone; and

    a heat exchanger in operable connection with the oil pump and disposed in an airstream external to the tailcone.

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