Abstract: An embodiment of a tool assembly includes a spring-loaded shaft assembly disposed along a first axis, a hub, and a roller disk. The hub is connected to a distal end of the spring-loaded shaft assembly. The hub has an upper hub portion adjacent to the distal end of the spring-loaded shaft assembly aligned with the first axis, and a lower hub portion extending along a second axis. The second axis forms an angle relative to the first axis. The roller disk is joined to the lower portion of the hub, and has a working surface about its perimeter. The roller disk is rotatable about the second axis parallel to the second portion of the hub. The working surface includes a profile along its width such that an effective radius of the roller disk varies along a width thereof.

Abstract: A pressure vessel assembly includes a plurality of lobes, each lobe having at least one vertically arranged interior wall, the lobes positioned in a side by side arrangement such that a first interior wall of a first lobe is positioned adjacent a second interior wall of a second lobe, the first interior wall having a first wall top and bottom side, the second interior wall having a second wall top and bottom side, the first wall top side joined to the second wall top side and the first wall bottom side joined to the second wall bottom side. Also included are first and second end wall surfaces of each of the plurality of lobes. Further included is a plurality of end caps, each of the end caps joined to the end wall surfaces of the lobes, each of the end caps joined to at least one adjacent end cap.

Abstract: A heat exchanger includes a conduit of a first aluminum alloy and a plurality of fins in thermally conductive contact with the exterior of the conduit. The fins include a second aluminum alloy comprising from 0.005 wt. % to 0.1 wt. % of at least one alloying element selected from tin, barium, indium, mercury, and gallium.

Abstract: A method of localized cathodic protection of a heat exchanger, includes providing at least one fin formed from a first metal alloy; applying a sacrificial layer of a second metal to at least one region in the at least one fin; and connecting a refrigerant tube to the at least one fin; wherein the sacrificial layer of the second metal includes a metal from one of a zinc alloy or a magnesium alloy.

Abstract: A component is described which may comprise a structure formed from a material selected from the group consisting of aluminum and an aluminum alloy. The component may further comprise a sacrificial layer in electrical contact with at least a portion of a surface of the structure. The sacrificial layer may protect the surface from localized corrosion and may comprise an alloy that is more anodic than the material forming the structure. The alloy may be selected from the group consisting of an aluminum alloy and a zinc alloy.

Abstract: A pressure vessel fluid manifold assembly includes a pressure vessel having a plurality of lobes joined to each other, each of the plurality of lobes having a wall disposed in contact with an adjacent wall of an adjacent lobe, and wherein the manifold can be external or internal to the lobes.

Abstract: An embodiment of a tool assembly includes a spring-loaded shaft assembly disposed along a first axis, a hub, and a roller disk. The hub is connected to a distal end of the spring-loaded shaft assembly. The hub has an upper hub portion adjacent to the distal end of the spring-loaded shaft assembly aligned with the first axis, and a lower hub portion extending along a second axis. The second axis forms an angle relative to the first axis. The roller disk is joined to the lower portion of the hub, and has a working surface about its perimeter. The roller disk is rotatable about the second axis parallel to the second portion of the hub. The working surface includes a profile along its width such that an effective radius of the roller disk varies along a width thereof.

Abstract: An embodiment of a tool assembly includes a robotic assembly, a tool mount, and a non-axisymmetric deep rolling tool. The robotic assembly includes a plurality of linear arms connected in series between a base end and a working end. Adjacent ones of the plurality of arms are connected via a corresponding plurality of multi-axis joints such that the working end is articulated by movement of one or more of the plurality of arms relative to one or more of the plurality of multi-axis joints. The tool mount is connected to one of the linear arms or one of the multi-axis joints at the working end of the robotic assembly. The non-axisymmetric deep rolling tool is connected to the tool mount, and includes a spring-loaded shaft assembly disposed along a first axis. A hub has an upper hub portion adjacent to the distal end of the spring-loaded shaft assembly aligned with the first axis, and a lower hub portion extending along a second axis, forming a nonzero angle relative to the first axis.

Abstract: An embodiment of a tool assembly includes a hub connected to a distal end of a spring-loaded shaft assembly disposed along a first axis. An upper hub portion is adjacent to the distal end of the spring-loaded shaft assembly aligned with the first axis, and a lower hub portion extends along a second axis, forming a nonzero angle relative to the first axis. A roller disk is joined to the lower portion of the hub, and is rotatable about the second axis parallel to the second portion of the hub. A load cell is disposed along the first axis between a proximal end of the shaft and the roller disk, and is adapted to measure a downward force applied along the shaft assembly.

Abstract: A heat exchanger includes a conduit of a first aluminum alloy and a plurality of fins in thermally conductive contact with the exterior of the conduit. The fins include a second aluminum alloy comprising from 0.005 wt. % to 0.1 wt. % of at least one alloying element selected from tin, barium, indium, mercury, and gallium.

Abstract: A pressure vessel assembly includes a plurality of lobes, each lobe having at least one vertically arranged interior wall, the lobes positioned in a side by side arrangement such that a first interior wall of a first lobe is positioned adjacent a second interior wall of a second lobe, the first interior wall having a first wall top and bottom side, the second interior wall having a second wall top and bottom side, the first wall top side joined to the second wall top side and the first wall bottom side joined to the second wall bottom side. Also included are first and second end wall surfaces of each of the plurality of lobes. Further included is a plurality of end caps, each of the end caps joined to the end wall surfaces of the lobes, each of the end caps joined to at least one adjacent end cap.

Abstract: A pressure vessel fluid manifold assembly includes a pressure vessel having a plurality of lobes joined to each other, each of the plurality of lobes having a wall disposed in contact with an adjacent wall of an adjacent lobe, and wherein the manifold can be external or internal to the lobes.

Abstract: In a method for manufacturing a blade, the blade comprises: an airfoil (100) having a root end and a tip (106); a metallic substrate (102) along at least a portion of the airfoil; and a tip coating (152) comprising an oxide abrasive (156) and an aluminum-based matrix (154). The method comprises simultaneous thermal spray of the matrix and the abrasive.

Abstract: A rotor has a rotor body with at least one slot receiving a blade. The blade has an outer surface, at least at some areas, formed of a first material and having an airfoil extending from a dovetail. The dovetail is received in the slot. A diode is in contact with a portion of the dovetail formed of a second material that is more electrically conductive than the first material. The diode is in contact with a rotating element that rotates with the rotor. The rotating element is formed of a third material. The first material is less electrically conductive than the third material. The diode and the rotating element together form a ground path from the portion of the dovetail into the rotor. An engine and a fan blade are also disclosed.

Abstract: A component is described which may comprise a structure formed from a material selected from the group consisting of aluminum and an aluminum alloy. The component may further comprise a sacrificial layer in electrical contact with at least a portion of a surface of the structure. The sacrificial layer may protect the surface from localized corrosion and may comprise an alloy that is more anodic than the material forming the structure. The alloy may be selected from the group consisting of an aluminum alloy and a zinc alloy.

Abstract: A heat exchanger having enhanced corrosion resistance is provided including at least one metal tube. The surface of the tube has a modified microstructure. At least one inhomogeneity has been removed or refined from the surface of the tube.

Abstract: A method of localized cathodic protection of a heat exchanger, includes providing at least one fin formed from a first metal alloy; applying a sacrificial layer of a second metal to at least one region in the at least one fin; and connecting a refrigerant tube to the at least one fin; wherein the sacrificial layer of the second metal includes a metal from one of a zinc alloy or a magnesium alloy.

Abstract: A micro channel heat exchanger alloy system is provided and includes first and second manifolds, including a 3000 series aluminum, each of the first and second manifolds being formed to define a respective interior therein, a tube, including at least one of 31108 and 31104 alloy material, extending from the first to the second manifold and being formed to define multiple channels by which the respective interiors of the first and the second manifolds fluidly communicate, a fin structure, including at least 3003 alloy material, disposed in thermal communication with the tube, the fin structure being cladded with a silicon rich layer, including a 4000 series aluminum and a flux material applied to surfaces of the first and second manifolds, the tube and the fin structure.

Abstract: A rotor has a rotor body with at least one slot receiving a blade. The blade has an outer surface, at least at some areas, formed of a first material and having an airfoil extending from a dovetail. The dovetail is received in the slot. A diode is in contact with a portion of the dovetail formed of a second material that is more electrically conductive than the first material. The diode is in contact with a rotating element that rotates with the rotor. The rotating element is formed of a third material. The first material is less electrically conductive than the third material. The diode and the rotating element together form a ground path from the portion of the dovetail into the rotor. An engine and a fan blade are also disclosed.

Abstract: An aluminum alloy component has a surface region alloyed with an anodic metal to increase corrosion resistance in aqueous environments with high salinity or sulfur content.