Spacer arrangement
AssigneeROLLS-ROYCE plc
InventorIan G. Martindale
Life of this patent
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Abstract
A spacer arrangement 1, 40 is provided in which wedges 5, 6; 45, 46 are arranged to have an interface 7, 47 between them such that a thermally variable member 8, 48 can cause relative motion between the wedges 5, 6; 45, 46 to adjust an arrangement lateral dimension dependent upon temperature. In such circumstances with the arrangement 1, 40 positioned within a gap 3 between a casing 14 and unison ring 13, retention of position of that unison ring 13 can be maintained. The unison ring is arranged to adjust position of variable vanes.
Claims18
A spacer arrangement for a gas turbine engine, the arrangement comprising a first wedge and a second wedge with an interface between the first wedge and the second wedges, the first and second wedges are arranged between a first component and a second component, and a thermally variable member is arranged to act across the first wedge and the second wedge for thermally dependent displacement about the interface whereby a desired lateral dimension of the arrangement is varied for positional reaction across a gap between the first and the second components.
Dependencies are inferred from the claim text.