Fundamental gear system architecture

  • US 8,572,943 B1
  • Filed: 07/25/2012
  • Issued: 11/05/2013
  • Est. Priority Date: 05/31/2012
  • Status: Active Grant
First Claim
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1. A fan drive gear system for a gas turbine engine comprising:

  • a gear system configured to provide a speed reduction between a fan drive turbine and a fan;

    a mount flexibly supporting portions of the gear system radially extending from a static structure of the gas turbine engine with respect to a central axis to accommodate radial movement between the gear system and the static structure; and

    a lubrication system configured to provide lubricant to the gear system and remove thermal energy produced by the gear system, wherein the lubrication system includes a maximum capacity for removing thermal energy from the gear system greater than zero and less than about 2% of power input into the gear system during operation of the engine.

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