Aerofoil blade containment
AssigneeROLLS-ROYCE plc
InventorAlec G. Dodd
Life of this patent
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Abstract
An aerofoil blade containment structure that is adapted to surround the low pressure turbine casing of a gas turbine engine includes an annular support member upon which is mounted a glass fiber knitted sleeve. The knitted sleeve is folded to define a plurality of interconnected secondary sleeves that are arranged in coaxial superposed relationship. Use of the containment structure obviates the use of thick, and therefore undesirably heavy, turbine casings.
Claims6
An aerofoil blade containment structure comprising a continuous woven sleeve disposed circumferentially about a gas turbine engine casing enclosing rotor aerofoil blades, said woven sleeve being formed of a plurality of interconnected sleeves connected in end-to-end relationship, wherein said woven sleeve is folded to define a plurality of interconnected secondary sleeves arranged in concentric superposed relationship with each other, said sleeve being woven from fibers that are capable both of withstanding the operational temperatures externally of such a gas turbine engine casing without suffering significant thermal degradation and of containing any failed rotor aerofoil released from within said casing radially inwardly of said sleeve.
Dependencies are inferred from the claim text.