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Jet aircraft fan case containment design

  • US 6,814,541 B2
  • Filed: 10/07/2002
  • Issued: 11/09/2004
  • Est. Priority Date: 10/07/2002
  • Status: Active Grant
First Claim
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1. A blade containment structure surrounding a fan in a fan jet engine comprising:

  • a honeycomb structure spaced radially outwardly from and surrounding tips of rotating blades of said fan, said honeycomb structure having an outer wall;

    a polyurethane projectile shield surrounding the outer wall of said honeycomb structure; and

    said polyurethane projectile shield having sufficient energy absorbing capability to contain blades and fragments of said blades thrown outward by damage to said fan.

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