Abstract: An inlet header having: an inner end, an outer end, a plurality of segments therebetween, including: an outer segment that extends from the outer end to a first intermediate end, the outer segment defines a cylindrical profile; a first intermediate segment that forms an outer elbow and extends from the first intermediate end to a second intermediate end, the second intermediate end has a rectangular shape, and the first intermediate segment increases in width proportionally as it extends toward the second intermediate end; a second intermediate segment that extends from the second intermediate end to a third intermediate end, the third intermediate end has a rectangular shape, and the second intermediate segment increases in width and height proportionally as it extends toward the third intermediate end; and an inner segment that forms an inner elbow and extends from the third intermediate end to the inner end of the inlet header.

Abstract: A system for deep rolling a fan blade including a shaft assembly disposed along a first axis; a hub connected to a distal end of the shaft assembly, the hub having an upper hub portion and a lower hub portion extending along a second axis, the second axis forming an angle relative to a first axis; a roller disk joined to the lower portion of the hub, the roller disk configured to contact a fan blade; a fixture supporting the fan blade; the fixture comprising a body supporting a pivot clamp attached to the body with a pivot; a support attached to the body, the support is configured to engage an airfoil portion of the fan blade; a receiver formed in the body for supporting a root of the fan blade; and a shoulder attached to the body configured to support a platform portion of the fan blade.

Abstract: An inlet header having: an inner end, an outer end, a plurality of segments therebetween, including: an outer segment that extends from the outer end to a first intermediate end, the outer segment defines a cylindrical profile; a first intermediate segment that forms an outer elbow and extends from the first intermediate end to a second intermediate end, the second intermediate end has a rectangular shape, and the first intermediate segment increases in width proportionally as it extends toward the second intermediate end; a second intermediate segment that extends from the second intermediate end to a third intermediate end, the third intermediate end has a rectangular shape, and the second intermediate segment increases in width and height proportionally as it extends toward the third intermediate end; and an inner segment that forms an inner elbow and extends from the third intermediate end to the inner end of the inlet header.

Abstract: A method is provided for machining a workpiece. During this machining method, an aperture is formed in the workpiece using a machining system. The machining system includes an ultrasonic machining device, a slurry delivery device and a controller. The forming of the aperture includes delivering a slurry to an interface between the ultrasonic machining device and the workpiece using the slurry delivery device, and transmitting ultrasonic vibrations into the slurry using the ultrasonic machining device. A feedback parameter is monitored during the forming of the aperture using the controller. A slurry delivery parameter for the slurry delivery device is adjusted during the forming of the aperture based on the feedback parameter using the controller.

Abstract: A composite pressure vessel assembly includes a plurality of lobes, each of the lobes having at least one interior wall and at least one curved wall, the plurality of lobes being positioned in a side by side arrangement and extending in a longitudinal direction from a first end to a second end. Also included is a plurality of end caps disposed at the ends of the lobes, wherein the plurality of lobes and end caps are formed of at least one fiber-reinforced polymer. A method of manufacturing a composite pressure vessel assembly is provided. The method includes forming a plurality of lobes consisting of at least one fiber-reinforced polymer. The method also includes forming a main body with the plurality of lobes, the lobes disposed in a side by side arrangement.

Abstract: A heat exchanger includes a body, a plurality of first flow channels defined in the body; and a plurality of second flow channels defined in the body. The second flow channels are fluidly isolated from the first flow channels. The first flow channels and second flow channels are arranged in a checkerboard pattern.

Abstract: A heat transfer system is disclosed that includes a plurality of electrocaloric elements including an electrocaloric film, a first electrode on a first side of the electrocaloric film, and a second electrode on a second side of the electrocaloric film. A fluid flow path is disposed along the plurality of electrocaloric elements, formed by corrugated fluid flow guide elements.

Abstract: A heat transfer system is disclosed that includes a plurality of electrocaloric elements (12) including an electrocaloric film (14), a first electrode (16) on a first side of the electrocaloric film, and a second electrode (18) on a second side of the electrocaloric film. A fluid flow path (20) is disposed along the plurality of electrocaloric elements, formed by corrugated fluid flow guide elements (19).

Abstract: A heat transfer system includes an electrocaloric element comprising an electrocaloric film (12). A first electrical conductor is disposed on a first side of the electrocaloric film, and a second electrical conductor is disposed on a second side of the electrocaloric film. At least one of the first and second electrical conductors is an electrically conductive liquid. An electric power source (20) is in electrical contact with the first and second electrical conductors, and is configured to provide an electrical field across the electrocaloric film. A liquid flow path (28) is disposed along the plurality of electrocaloric elements for the electrically conductive liquid.

Abstract: A heat exchanger includes a body, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body. The second flow channels are fluidly isolated from the first flow channels. At least two of the second flow channels are adjacent each other and are separated from each other by at least one common fin, wherein the at least one common fin includes an opening defined therein for permitting flow between the adjacent second flow channels.

Abstract: A heat exchange device includes a first section and a second section. Each of the first and second sections includes flow passages configured to cool fluid. A center manifold is disposed between the first and second sections. Hot fluid enters the manifold at one end, passes through the first and second sections and cooled fluid exits the manifold at the opposing end. Each of the flow passages can have a bend at an outer edge of the heat exchange device configured to return high pressure fluid to the center manifold.

Abstract: A heat exchanger includes a heat exchanger body. A first set of flow channels is defined in the heat exchanger body extending axially with respect to a first flow axis, wherein the first set of the flow channels forms a first flow circuit. A second set of flow channels is defined in the heat exchanger body extending axially with respect to a second flow axis. The second set of the flow channels forms a second flow circuit that is in fluid isolation from the first flow circuit. Each flow channel is fluidly isolated from the other flow channels. At least some of the flow channels have cross-sections that vary along their respective flow axis.

Abstract: A heat exchanger includes a body made of polymer, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body. The second flow channels fluidly isolated from the first flow channels. The first flow channels and second flow channels are arranged in a checkerboard pattern.

Abstract: A heat exchanger includes a body, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body, the second flow channels fluidly isolated from the first flow channels, wherein at least one of the first flow channels or the second flow channels have a changing characteristic along a direction of flow within the first flow channels or the second flow channels.

Abstract: A heat exchanger includes a body, a plurality of first flow channels defined in the body; and a plurality of second flow channels defined in the body. The second flow channels are fluidly isolated from the first flow channels. The first flow channels and second flow channels are arranged in a checkerboard pattern.

Abstract: A high-pressure vessel is provided. The high-pressure vessel may comprise a first chamber defined at least partially by a first wall, and a second chamber defined at least partially by the first wall. The first chamber and the second chamber may form a curved contour of the high-pressure vessel. A modular tank assembly is also provided, and may comprise a first mid tube having a convex geometry. The first mid tube may be defined by a first inner wall, a curved wall extending from the first inner wall, and a second inner wall extending from the curved wall. The first inner wall may be disposed at an angle relative to the second inner wall. The first mid tube may further be defined by a short curved wall opposite the curved wall and extending from the second inner wall to the first inner wall.

Abstract: A high-pressure vessel is provided. The high-pressure vessel may comprise a first chamber defined at least partially by a first wall, and a second chamber defined at least partially by the first wall. The first chamber and the second chamber may form a curved contour of the high-pressure vessel. A modular tank assembly is also provided, and may comprise a first mid tube having a convex geometry. The first mid tube may be defined by a first inner wall, a curved wall extending from the first inner wall, and a second inner wall extending from the curved wall. The first inner wall may be disposed at an angle relative to the second inner wall. The first mid tube may further be defined by a short curved wall opposite the curved wall and extending from the second inner wall to the first inner wall.

Abstract: A pressure gauge 20 includes a diaphragm 36 having a first side 64 and a second side 66 and occupying a first state or a second state as a function of a pressure of a fluid 59 in contact with the first side 64. A sensor 68 communicable with the second side 66 of the diaphragm 36 senses the first state or the second state to produce a signal which is processed by a circuit 40 to produce an output. An indicator 42 provides an output representing the first state or the second state of the diaphragm 36 based on the output from the circuit 40.