Casing
AssigneeROLLS-ROYCE plc
InventorJames Alex Finlayson
Life of this patent
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Abstract
A containment case for a gas turbine including: a cylindrical outer casing extending about an axis and having a radially outer and a radially inner surface; a coaxially arranged cylindrical inner skin formed of a harder material than the outer casing joined to the inner surface of the cylindrical outer casing; and an array of ribs extending radially from the inner skin towards the axis. The case for can have the coaxially arranged cylindrical inner skin formed of a harder material than the outer casing joined to the inner surface of the cylindrical outer casing by a galvanic isolation layer.
Claims16
A containment case for a gas turbine, the case comprising:
- a cylindrical outer casing extending about an axis and having a radially outer surface and a radially inner surface;
- a coaxially arranged cylindrical inner skin formed of a harder material than the outer casing joined to the inner surface of the cylindrical outer casing;
- and
- an array of ribs extending radially from the inner skin towards the axis,
- wherein each rib has a hollow cavity open to a radially outer surface of the inner skin.
A gas turbine engine comprising:
- a containment case comprising:
- a cylindrical outer casing extending about an axis and having a radially outer surface and a radially inner surface;
- a coaxially arranged cylindrical inner skin formed of a harder material than the outer casing joined to the inner surface of the cylindrical outer casing;
- and
- an array of ribs extending radially from the inner skin towards the axis, wherein:
- the array of ribs is associated with a row of rotatable aerofoils, each aerofoil having a tip with a tip chord length between a leading edge of the aerofoil and a trailing edge of the aerofoil, and
- the ribs are spaced from each other in a circumferential direction at a distance that is up to a ¼ of the tip chord length.
Dependencies are inferred from the claim text.