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Flexible support structure for a geared architecture gas turbine engine

  • US 9,133,729 B1
  • Filed: 09/20/2012
  • Issued: 09/15/2015
  • Est. Priority Date: 06/08/2011
  • Status: Expired due to Fees
First Claim
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1. A gas turbine engine comprising:

  • a fan shaft;

    at least one bearing supporting the fan shaft;

    a frame which supports said fan shaft, said frame defines a frame lateral stiffness and a frame transverse stiffness;

    a gear system which drives said fan shaft;

    a flexible support which at least partially supports said gear system, said flexible support defines a flexible support lateral stiffness with respect to said frame lateral stiffness and a flexible support transverse stiffness with respect to said frame transverse stiffness; and

    an input coupling to said gear system, said input coupling defines an input coupling lateral stiffness with respect to said frame lateral stiffness and an input coupling transverse stiffness with respect to said frame transverse stiffness.

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