Abstract: In one embodiment, a coverplate may be configured to axially overlay a plurality of blade retaining slots within a wheel post of a rotor wheel. The coverplate may include a tab for radially securing the coverplate within a complementary groove of the rotor wheel and an aperture configured to align with a corresponding aperture of the turbine wheel to receive a fastener for axially securing the coverplate to the rotor wheel.

Abstract: A seal assembly for a gas turbine engine including a seal member and an interstage seal ring including an axially forward member coupled to a first radially inward surface of a first disk and an axially aft member coupled to a second radially inward surface of a second disk, wherein the seal ring is configured to move in an axial direction while the upstream and downstream arms are coupled to the first and second disk respectively.

Abstract: A method of attaching two rotor discs in a turbine engine, the method comprising the steps of: forming a first rotor disc that includes a first axial extension and a disc flange; forming a second rotor disc that includes a second axial extension and a weld surface; forming a bridge, the bridge that includes a bridge flange at one end and a weld surface at the other end, and, along an outer radial surface, the bridge comprises means for sealing; attaching the bridge to the second rotor disc via welding the weld surfaces of the bridge and the second axial extension; and attaching the first rotor disc to the bridge via removably securing the disc flange to the bridge flange.

Abstract: A seal assembly for a gas turbine engine including a seal member and an interstage seal ring including an axially forward member coupled to a first radially inward surface of a first disk and an axially aft member coupled to a second radially inward surface of a second disk, wherein the seal ring is configured to move in an axial direction while the upstream and downstream arms are coupled to the first and second disk respectively.

Abstract: In one embodiment, a coverplate may be configured to axially overlay a plurality of blade retaining slots within a wheel post of a rotor wheel. The coverplate may include a tab for radially securing the coverplate within a complementary groove of the rotor wheel and an aperture configured to align with a corresponding aperture of the turbine wheel to receive a fastener for axially securing the coverplate to the rotor wheel.

Abstract: A gas turbine including a casing and a shroud ring, the gas turbine including an attachment device rigidly attached to the casing and at least one of the shroud ring and a duct attached to the shroud ring, wherein the device allows the shroud ring to expand and contract independent of the casing and provides limited net axial growth of the shroud ring.