Abstract: The turbine rotor blade includes a platform with a first side and a second side; an airfoil extending from the first side of the platform; and an attachment portion extending from the second side of the platform. The attachment portion includes first and second side surfaces and a base surface on an underside of the attachment portion between the first and second side surface. The base surface includes at least one curved segment or angled segment.

Abstract: In accordance with an exemplary embodiment, disclosed is an air-cooled turbine blade having an airfoil shape, including a convex suction side wall, a concave pressure side wall, the walls including an interior surface that defines an interior with the blade, a suction side flow circuit formed within the blade interior, a pressure side flow circuit formed within the blade interior; and a trailing edge pin bank positioned aft of the suction side and pressure side flow circuits. The turbine blade includes a wishbone-shaped architecture at a transition point between the suction side flow circuit and the pressure side flow circuit and the trailing edge pin bank.

Abstract: The turbine rotor blade includes a platform with a first side and a second side; an airfoil extending from the first side of the platform; and an attachment portion extending from the second side of the platform. The attachment portion includes first and second side surfaces and a base surface on an underside of the attachment portion between the first and second side surface. The base surface includes at least one curved segment or angled segment.

Abstract: A seal plate for directing an airflow includes a hub, main pumping vanes, and splitter vanes. The hub has a tubular section and an annular flange section flared outwardly relative to the tubular section to define a flow surface. The main pumping vanes are disposed circumferentially on the flow surface around the annular flange section and each has a canted section located radially inward relative to a straight section and aligned with a flow direction of the airflow. The straight section extends along a first plane including a centerline of the seal plate. The splitter vanes are disposed circumferentially on the flow surface around the annular flange section such that at least one splitter vane is disposed between the straight sections of two adjacent main pumping vanes. Each splitter vane has a length that is less than a length of each of the two adjacent main pumping vanes.

Abstract: A seal plate for directing an airflow includes a hub, main pumping vanes, and splitter vanes. The hub has a tubular section and an annular flange section flared outwardly relative to the tubular section to define a flow surface. The main pumping vanes are disposed circumferentially on the flow surface around the annular flange section and each has a canted section located radially inward relative to a straight section and aligned with a flow direction of the airflow. The straight section extends along a first plane including a centerline of the seal plate. The splitter vanes are disposed circumferentially on the flow surface around the annular flange section such that at least one splitter vane is disposed between the straight sections of two adjacent main pumping vanes. Each splitter vane has a length that is less than a length of each of the two adjacent main pumping vanes.

Abstract: For retaining a heatsink in contact with a processor on a board, a plurality of spaced apart mounting studs are mounted on the board. Each mounting stud includes a pivotally mounted resilient arm and a catch. A pair of the studs are positioned such that the resilient arm of one of the studs pivots to extend to engage the resilient arm catch of an adjacent one of the studs.

Abstract: An information handling system chassis includes a chassis base, a carriage, and a carriage sliding system. The chassis base is configured to house a plurality of first electrical components. The carriage is configured to house one or more second electrical components such that a user may access the one or more second electrical components from a front side of the chassis. The carriage sliding system is configured to slidably couple the carriage to the chassis base such that the carriage can be slided forward to an access position and rearward to a storage position. In the storage position of the carriage, a front area of the chassis base configured to receive one or more first electrical components is covered by the carriage, whereas in the access position of the carriage, at least a portion of the front area of the chassis base is not covered by the carriage.

Abstract: An information handling system chassis includes a chassis base, a carriage, and a carriage sliding system. The chassis base is configured to house a plurality of first electrical components. The carriage is configured to house one or more second electrical components such that a user may access the one or more second electrical components from a front side of the chassis. The carriage sliding system is configured to slidably couple the carriage to the chassis base such that the carriage can be slided forward to an access position and rearward to a storage position. In the storage position of the carriage, a front area of the chassis base configured to receive one or more first electrical components is covered by the carriage, whereas in the access position of the carriage, at least a portion of the front area of the chassis base is not covered by the carriage.

Abstract: A rocker arm assembly includes first and second rocker arms defining a pivot location. The first rocker arm includes, toward a first axial end thereof adjacent the pivot location, a fulcrum surface and, toward a second axial end thereof, a latch assembly including a latch member moveable between latched and unlatched conditions relative to a latch surface defined by an adjacent portion of the second rocker arm. The latch assembly further including a spring biasing the latch member toward one of the latched and unlatched conditions, and a pressure chamber operable to bias the latch member toward the other of the latched and unlatched conditions. The first rocker arm further includes a fluid passage having a first end in open fluid communication with the fulcrum surface and a second end in open fluid communication with the pressure chamber of the latch assembly.

Abstract: A valve control system including a camshaft having first and second cam profiles, the valve control system comprising a rocker arm assembly (11) including a first rocker arm (13) having a first cam follower (15) in engagement with the first cam profile, and a second rocker arm (17) having a second cam follower (23,25) in engagement with the second cam profile. The engine includes a fulcrum location (P) operable to provide a source of pressurized fluid, and the first rocker arm includes a latch member (47) moveable between latched (FIG. 6) and unlatched conditions. The latch member is biased toward the latched condition by a fluid pressure in a chamber (51), and the first rocker arm defines a fluid passage (55) having a first end (57) in open fluid communication with the pressure source, and a second end (59) in open fluid communication with the pressure chamber (51).

Abstract: A valve control system for an engine having a camshaft with first and second cam profiles, the valve control system comprising a rocker arm assembly including a first rocker arm having a first cam follower in engagement with the first cam profile, and a second rocker arm having a second cam follower in engagement with the second cam profile. The first rocker arm includes a latch member biased toward a latched condition by a fluid pressure in a chamber, and the first rocker arm defines a fluid passage having a first end in open fluid communication with the pressure source, and a second end in open fluid communication with the pressure chamber. An alignment feature cooperates with the latch member to ensure proper alignment with a latch surface.

Abstract: A cylinder head (10) for an internal combustion engine has hydroformed port liners (18) positioned within selected ports, either exhaust and/or intake ports (14, 16). The hydroformed port liner (18) includes an air gap (24) for an insulation layer within the selected port (14, 16) between an outer surface (19) of the hydroformed port liner (18) and the wall of the port (14, 16). A cylinder head (12) with a predetermined port configuration has selected ports (14, 16) cast with protrusions (22). The selected ports (14,16) have a larger diameter than a standard size port diameter for that cylinder head to provide a predetermined port configuration by a preset amount based on the thickness of the hydroformed port liner (18) and a desired air gap (22). Protrusions (22) in the wall of the selected ports (14, 16) or on the insert sleeves (17) facilitate formation of the air gap during the hydroforming process.