An improved and enhanced dynamic seal for use in high-speed turbomachinery includes an inner ring coupled to an outer sleeve. The coupling between the inner ring and the outer sleeve is strengthened by forming an increased surface area, exhibited by recesses, in at least one of the outer surface of the inner ring and the inner surface of the outer sleeve, and by providing an adhesive material in the recesses to bond the inner ring to the outer sleeve. Additionally, the coupling can be further strengthened by providing complementary projections on at least one of the outer surface of the inner ring and the inner surface of the outer sleeve to fit into the recesses.

A foil thrust bearing forms the primary rotating interface for a film riding face seal. This face seal includes a spring system that will allow the entire assembly to translate axially relative to a static attachment. The complete assembly will form a hybrid foil/film riding face seal that shows much promise at being sufficiently flexible to enable operation in a gas turbine engine. The seal includes a flexible top plate having a non-flat surface under its working conditions, and a spring support system to allow the top plate to accommodate axial excursions and out-of-flat distortions.

An improved and enhanced hydrodynamic fluid film bearing for rotatably supporting a shaft journal is provided and includes a stationary retaining member, at least two generally cylindrical foil elements attached to one another and forming an anti-rotation fin, and a generally cylindrical resilient backing member. The retaining member has an inner surface defining a cylindrical opening for receiving a shaft journal. The inner surface also includes a longitudinally extending slot in which the anti-rotation fin formed by the foil elements is mounted so that the foil elements line at least a portion of the cylindrical opening. The resilient member is also disposed within the cylindrical opening generally concentric to and radially outward from the foil elements. The foil elements may be discrete elements attached together to form the anti-rotation fin, or alternatively formed from a single foil with a bend defining the anti-rotation fin.

An improved and enhanced dynamic seal for use in high-speed turbomachinery includes an inner ring coupled to an outer sleeve. The coupling between the inner ring and the outer sleeve is strengthened by forming an increased surface area, exhibited by recesses, in at least one of the outer surface of the inner ring and the inner surface of the outer sleeve, and by providing an adhesive material in the recesses to bond the inner ring to the outer sleeve.

An improved and enhanced hydrodynamic fluid film bearing for rotatably supporting a shaft journal is provided and includes a stationary retaining member, at least two generally cylindrical foil elements attached to one another and forming an anti-rotation fin, and a generally cylindrical resilient backing member. The retaining member has an inner surface defining a cylindrical opening for receiving a shaft journal. The inner surface also includes a longitudinally extending slot in which the anti-rotation fin formed by the foil elements is mounted so that the foil elements line at least a portion of the cylindrical opening. The resilient member is also disposed within the cylindrical opening generally concentric to and radially outward from the foil elements. The foil elements may be discrete elements attached together to form the anti-rotation fin, or alternatively formed from a single foil with a bend defining the anti-rotation fin.