Fan Track Liner
AssigneeROLLS-ROYCE plc
InventorPhilip Stanley Grainger
Life of this patent
Estimating the term…
Abstract
A containment arrangement for a gas turbine engine comprises: a radially outer annular casing 12; a fan track liner 28 radially within the casing comprising: an impact region 30 comprising a cellular material having a first compressive strength; at least one elongate ridge portion 26 extending through the impact region in a direction having an axial component, the ridge portion having a second compressive strength higher than the first compressive strength; and a gas-washed layer 38 radially within the fan track liner.
Claims20
A containment arrangement for a gas turbine engine, the containment arrangement comprising:
- a radially outer annular casing;
- a fan track liner radially within the casing comprising:
- an impact region comprising a radially outer layer of cellular material and a radially inner layer of cellular material, the cellular material of the radially outer layer having a first compressive strength;
- and
- at least one elongate ridge portion extending through the radially outer layer only, the ridge portion extending in a direction having an axial component, the ridge portion having a second compressive strength that is higher than the first compressive strength;
- and
- a gas-washed layer radially within the fan track liner.
A fan track liner panel for an annular fan track liner of a containment arrangement for a gas turbine engine, the fan track liner panel comprising:
- a body portion extending circumferentially and axially and comprising:
- a radially outer layer of cellular material and a radially inner layer of cellular material;
- and
- an elongate recess formed only in the radially outer layer and extending in a direction having an axial component, the recess being open on at least the outer radial surface of the panel and being configured to receive at least part of an elongate ridge portion of the fan track liner.
A gas turbine engine having a containment arrangement comprising:
- an annular fan track liner comprising a plurality of circumferentially arranged fan track liner panels, wherein each fan track liner panel comprises:
- an impact portion comprising a radially outer layer of cellular material and a radially inner layer of cellular material, the cellular material of the radially outer layer having a first compressive strength;
- a first edge and a second edge on opposite sides of the fan track liner panel, wherein the first edge and the second edge each have an axial component;
- and
- an edge recess provided by each of the first edge and the second edge, the edge recess being formed in the radially outer layer of cellular material only;
- a plurality of voids, each void formed by the edge recesses of a pair of adjacent fan track liner panels;
- and
- a plurality of elongate ridge portions, each disposed in a void and extending in a direction having an axial component, wherein each elongate ridge portion has a second compressive strength higher than the first compressive strength.
Dependencies are inferred from the claim text.