Turbine engine seal for turbine engines

Abstract

A turbine engine seal configured for use between a turbine engine rotor and a turbine engine static component of a turbine engine can include a seal construction having a negative thermal expansion (NTE) layer located on one or both of the turbine engine rotor and turbine engine static component. The NTE layer can include a NTE reactive component comprising a material with a negative thermal expansion coefficient. When the turbine engine rotor rubs against the turbine engine static component, heat is generated and the NTE reactive component can experience an increase in temperature from a first temperature to a second temperature. The increase in temperature causes a dimension of the NTE reactive component to decrease which consequently forms a hydrodynamic pocket useful to generate a lift force that urges separation between the turbine engine rotor and turbine engine static component. The seal construction can include a lattice compliant layer.

Dependencies are inferred from the claim text.