Patent ID: 7717671
Filing Date: 2010-05-18
Classification: F01D,F05D,F16J

Abstract:
1. A seal for between a rotating component and a stationary component concentrically aligned about an axis of rotation within a gas turbine engine, the seal comprising: a radially extending elongate sealing member positioned on either the rotating or stationary component of the gas turbine engine and for closing a radial gap between the rotating member and the stationary member; and a land positioned opposite the sealing member on either the rotating or stationary component of the gas turbine engine such that a clearance height is provided between the sealing member and the land; the land comprising: wherein the sealing member and the land are positioned with respect to each other so that the clearance height is maintained approximately constant during the changes in the radial gap and relative axial position due to thermal expansion and mechanical stress of the engine components arising from operation of the gas turbine engine.