Abstract: A seal assembly for a fluid coupling includes: (a) a generally planar, substantially rigid seal retainer with opposed first and second faces, having an annular first groove formed in the first face; (b) a first resilient seal disposed in the first groove; and (c) an annular first backup ring positioned radially outboard of the first resilient seal and secured to the first resilient seal, wherein the first backup ring is substantially harder than the first resilient seal.

Abstract: A heat exchanger system includes a duct having a duct wall with a duct wall outer surface and a duct wall inner surface; and a heat exchanger partial shell hermetically joined to the duct wall inner surface. The heat exchanger partial shell and a shell portion of the duct wall inner surface constitute a heat exchanger. A heat exchanger inlet manifold is defined by a nonplanar inlet sheet of material hermetically joined to the duct wall outer surface. A heat exchanger outlet manifold is defined by a nonplanar outlet sheet of material hermetically joined to the duct wall outer surface. A heat exchanger inlet opening extends through the duct wall between the inlet manifold and the heat exchanger, and a heat exchanger outlet opening extends through the duct wall between the outlet manifold and the heat exchanger.

Abstract: A seal assembly for a fluid coupling includes: (a) a generally planar, substantially rigid seal retainer with opposed first and second faces, having an annular first groove formed in the first face; (b) a first resilient seal disposed in the first groove; and (c) an annular first backup ring positioned radially outboard of the first resilient seal and secured to the first resilient seal, wherein the first backup ring is substantially harder than the first resilient seal.

Abstract: A heat exchanger system includes a duct having a duct wall with a duct wall outer surface and a duct wall inner surface; and a heat exchanger partial shell hermetically joined to the duct wall inner surface. The heat exchanger partial shell and a shell portion of the duct wall inner surface constitute a heat exchanger. A heat exchanger inlet manifold is defined by a nonplanar inlet sheet of material hermetically joined to the duct wall outer surface. A heat exchanger outlet manifold is defined by a nonplanar outlet sheet of material hermetically joined to the duct wall outer surface. A heat exchanger inlet opening extends through the duct wall between the inlet manifold and the heat exchanger, and a heat exchanger outlet opening extends through the duct wall between the outlet manifold and the heat exchanger.

Abstract: A gas turbine engine including an active clearance control system that facilitates extending a useful life of a rotor assembly in a cost effective and reliable manner is described. The engine includes at least one rotor assembly and an engine casing that extends circumferentially around the rotor assembly, such that a tip clearance is defined between the rotor assembly and the engine casing. The clearance control system includes a plurality of panels that couple to extend circumferentially around the engine. Each clearance control system panel includes a circumferential feed duct that is formed integrally with the panel.

Abstract: A gas turbine engine including an active clearance control system that facilitates extending a useful life of a rotor assembly in a cost effective and reliable manner is described. The engine includes at least one rotor assembly and an engine casing that extends circumferentially around the rotor assembly, such that a tip clearance is defined between the rotor assembly and the engine casing. The clearance control system includes a plurality of panels that couple to extend circumferentially around the engine. Each clearance control system panel includes a circumferential feed duct that is formed integrally with the panel.

Abstract: A spring unit for a core pin assembly for use in molding and die casting apparatus which can be installed in and removed from a mold section as a single unit.