Blade containment structure

Details Blade containment structure Blade containment structure

2010-09-24

2011-11-01

Verdier, Christopher (Department: 3745)

Rotary kinetic fluid motors or pumps

Method of operation

C415S009000

Reexamination Certificate

active

08047764

ABSTRACT:
The fan duct of a ducted fan gas turbine engine has a fan case lined with a honeycomb structure that acts to absorb the energy of a separated part of a blade. A layer of composite material lining honeycomb structure delaminates/breaks when a separated blade part passes through a further, inner honeycomb liner and hits it. The resulting free end of composite liner wraps round the striking end of the blade part, thus blunting the cutting action of the blade part and spreading the generated forces to the extent that the blade part is de-energised sufficiently to prevent it penetrating the fan case.

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Office Action from parent U.S. Appl. No. 11/410,011, dated Oct. 6, 2010.

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