fan blade

Fan disk

Fan disk is the part of a turbofan jet engine that contains the fan blades. It is considered one of the most critical components of the engine and has four main functions:

  • React to centrifugal loads from the fan blades - both during normal operation and during a fan blade off event
  • Provide attachment from the low pressure (LP) shaft to drive the fan and to retain the fan blades
  • Absorb impact loads
  • Provide attachment for the nose cone and other perpherial components

Because of the critical nature of this component a fan disk failure is considered hazardous to the aircraft. They are usually made from a single titanium alloy forging.

See also

United Airlines flight 232, which crashed after the fan disc in its number two engine shattered and took out all hydraulic systems.

Search another word or see fan bladeon Dictionary | Thesaurus |Spanish
Copyright © 2015, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature