| 摘要 |
A gas turbine engine rotor blade containment assembly comprises a relatively stiff containment casing 54. A flexible structure 62 is arranged within the casing 54 and spaced from the casing 54 by crushable structures 64, 66 at axially spaced positions. A viscoelastic material 68 is arranged to fill at least partially the space 70 between the containment casing 54, the flexible structure 62 and the crushable structures 64, 66. The viscoelastic material 68, which may comprise grease, a thixotropic paste, a polymer resin or granular material, may completely fill the space 70. The containment casing 54 may feature circumferentially extending ribs 55 and may comprise a cellular structure. The crushable structures 64, 66 may be cellular honeycomb or metal foam and may contain a viscoelastic material.
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