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Flexible support structure for a geared architecture gas turbine engine

  • US 10,227,893 B2
  • Filed: 05/26/2017
  • Issued: 03/12/2019
  • Est. Priority Date: 06/08/2011
  • Status: Active Grant
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 defining a fan shaft support transverse stiffness;

    a gear system connected to said fan shaft, said gear system includes a gear mesh defining a gear mesh lateral stiffness and a gear mesh transverse stiffness;

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

    a flexible support supporting said gear system and defining a flexible support transverse stiffness; and

    wherein said gear system input lateral stiffness is less than 5% of said gear mesh lateral stiffness.

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