Patent ID: 7959405

Claim:
A separated blade part containment structure, comprising: an annular metallic casing having an inner surface; and an annular structure, the annular structure consisting of: a first annular honeycomb layer bonded to the inner surface of the annular metallic casing; a liner having an outer surface and an inner surface and comprising an annular layer of composite material, the outer surface of the liner being bonded to an inner surface of the first annular honeycomb layer, the annular layer of composite material having a configuration of being continuously formed and unbroken in an annular direction so as to be stronger in compression in a direction radially of the annular structure than in tension in a direction peripherally of the annular structure; and a second honeycomb structure, which is abradable, disposed on the inner surface of the liner, sandwiching the liner between the first honeycomb structure and the second honeycomb structure, wherein the configuration of the annular layer causes breaking of the liner across a width of the annular layer of composite material in a direction axially of the annular structure when the annular layer of composite material becomes trapped between a separated, moving blade part and the first honeycomb structure of the annular structure, to enable a free end portion of the liner to wrap around a liner contacting portion of the separated, moving blade part.