| 摘要 |
The ducted fan ( 12 ) of a ducted fan gas turbine engine ( 10 ) is surrounded by a compartment ( 26 ), which is packed with bristles ( 38 ). Should a blade of the fan stage ( 12 ) disintegrate during operation of engine ( 10 ), the resulting fragments, if they pass through an abradeable honeycomb structure ( 32 ), will collide with the bristles ( 38 ), which will absorb the energy exerted by the fragments, and thus prevent puncturing of the outer wall ( 18 ) of the fan duct structure.
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