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FLEXIBLE SUPPORT STRUCTURE FOR A GEARED ARCHITECTURE GAS TURBINE ENGINE

  • US 20170175583A1
  • Filed: 03/07/2017
  • Published: 06/22/2017
  • Est. Priority Date: 06/08/2011
  • Status: Abandoned Application
First Claim
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1. A gas turbine engine, comprising:

  • a fan shaft driving a fan having fan blades;

    a fan shaft support that supports said fan shaft;

    a gear system connected to said fan shaft, said gear system includes a ring gear defining a ring gear transverse stiffness, a gear mesh defining a gear mesh lateral stiffness and a gear mesh transverse stiffness, and a reduction ratio greater than 2.3;

    a gear system input to said gear system, said gear system input defines a gear system input lateral stiffness; and

    wherein said ring gear transverse stiffness is less than 20% of said gear mesh transverse stiffness and said gear system input lateral stiffness is less than 5% of said gear mesh lateral stiffness.

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