Abstract: A tool for ultrasonic impact grinding apparatus driven to vibrate along a longitudinal axis at an applied operating frequency includes a tool body disposed on the longitudinal axis, a first tip extending from an output end of the tool body, and a second tip extending in parallel to the first tip from the output end of the tool body. The first tip has a first length. The second tip has a second length greater than the first length. A mass of the first and second tip is substantially balanced across the output end of the tool body and with respect to the longitudinal axis.

Abstract: A stirling cycle machine includes a thermal energy exchange apparatus including a first side plate having a plurality of first side pins extending therefrom and a second side plate having a plurality of second side pins extending toward the plurality of first side pins. A regenerator/displacer is positioned between the first side plate and the second side plate. The regenerator/displacer includes a plurality of pin openings, each surrounding a first side pin and a corresponding second side pin. The regenerator/displacer is configured to be driven in a first direction toward the first side plate and in a second direction toward the second side plate. The motion of the regenerator/displacer drives displacement of a working fluid in flow communication with the regenerator/displacer, the first side pins and the second side pins, to urge a thermal energy exchange between the first side pins and the second side pins via the working fluid.

Abstract: Aircraft and aircraft electric motors include a rotor assembly having a plurality of magnets arranged in magnet Halbach arrays on a magnet support. The magnet support includes a plurality of protrusions defined on surface thereof and each magnet Halbach array includes a respective cut-out notch configured to engage with a respective protrusion. An output shaft is operably coupled to the rotor assembly. A stator having a support structure and at least one winding wrapped about a plurality of stator teeth is configured to generate an electromagnetic field to cause rotation of the rotor assembly. A heat pipe is arranged within each protrusion and configured to transfer heat away from the magnets.

Abstract: A tool for ultrasonic impact grinding apparatus driven to vibrate along a longitudinal axis at an applied operating frequency includes a tool body disposed on the longitudinal axis, a first tip extending from an output end of the tool body, and a second tip extending in parallel to the first tip from the output end of the tool body. The first tip has a first length. The second tip has a second length greater than the first length. A mass of the first and second tip is substantially balanced across the output end of the tool body and with respect to the longitudinal axis.

Abstract: According to an aspect of the present disclosure, an ultrasonic welding tool having a longitudinal axis is provided that includes an ultrasonic tool, a tapered step horn, an ultrasonic transducer, and a plurality of helical grooves. The ultrasonic tool (UT) has a diameter, a UT length extending between a UT first end and a distal tool tip, and a UT exterior surface that extends around a UT circumference of the ultrasonic tool. The tapered step horn (SH) has an SH length that extends between an SH first end and an SH second end, a major diameter disposed at the SH first end, a minor diameter disposed at the SH second end, a middle diameter between the SH first end and the SH second end, and an SH exterior surface that extends around an SH circumference of the step horn. The SH second end of the step horn is connected to the UT first end of the ultrasonic tool. The ultrasonic transducer is in communication with the step horn and the ultrasonic tool.

Abstract: A method of machining ceramic matrix composite components includes providing an ultrasonic vibration tool having a tool tip, and exciting the tool by providing a control current, such that the tool tip is repeatedly vibrated towards and away from a ceramic matrix composite workpiece. A slurry feed is supplied including abrasive particles to a surface to be machined by the tool tip. A vibration amplitude of the tool tip is controlled by sensing load on the tool and communicating with a computing device. The computing device controls the vibration amplitude of the tool tip. The computing device is provided with at least one memory programmed with historic data, and is operable to modify the vibration amplitude signal being sent to the tool, and comparing resulting load levels due to the change in vibration amplitude signals, and storing the change in vibration amplitude signals at the memory.

Abstract: A system for detecting an edge of a substrate, comprising a coated assembly. The coated assembly includes a conductive substrate having at least one edge portion and a dielectric coating coupled along the conductive substrate, the dielectric coating covering the at least one edge portion of the conductive substrate. The system also includes a conductive tool configured to interact with the coated assembly and a substrate sensing system. The substrate sensing system includes a power source coupled with the conductive tool, the coated assembly, and an electrical circuit including the power source and the coated assembly and a sensor configured to sense a change between an open configuration and a closed configuration of the electrical circuit. In an open configuration the conductive tool is engaged with the coated assembly and disengaged from the conductive substrate and in a closed configuration the conductive tool is engaged with the conductive substrate.

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 rotor is provided. The rotor includes a central hub, an outer ring assembly and back-to-back curved webs. The outer ring assembly includes magnetic elements. The back-to-back curved webs are_radially interposed between the central hub and the outer ring assembly. The back-to-back curved webs can be circumferentially continuous about the central hub or circumferentially non-continuous about the central hub.

Abstract: A method of machining a workpiece includes receiving at least one input parameter from an ultrasonic impact grinding system having an ultrasonic vibration tool. The input parameter includes a material property of a workpiece and a tool parameter. A physics-based model is applied to the input parameter and an estimation is made of a vibration amplitude for a power level to be provided to the vibration tool and a particle size for abrasive particles to be used with the vibration tool. The power level is provided to an adaptive profile control for the tool.

Abstract: A method of machining a workpiece using an ultrasonic vibration tool to engage abrasive particles in a slurry includes capturing a power output from the ultrasonic vibration tool. The power output is related to a vibration amplitude of a tool tip of the ultrasonic vibration tool. A controller connected to an ultrasonic power supply receives the captured power output. The ultrasonic power supply supplies power to the ultrasonic vibration tool. The controller determines the captured power output when it has reached a specified level. A control signal from the controller to the ultrasonic power supply is used to modify the power to the ultrasonic vibration tool.

Abstract: A heat exchange device for an electromechanical system. The heat exchange device can include an evaporator, a condenser, and a flexible heat flow element (or “ribbon” section) that connects the evaporator and the condenser. The “ribbon” section can receive heat, from heat source associated with the electromechanical system, via the evaporator. The condenser can be coupled to a structural element that is part of a movable component of the electromechanical system. The condenser receives heat from the evaporator via the “ribbon” section. The condenser interfaces with an enclosure of the electromechanical system to provide both a thermal connection between the condenser element and the enclosure and a structural connection between the movable component and the enclosure, via the structural element.

Abstract: A substrate edge detection system including a substrate material having the substrate edge with a surface; a coating disposed on the surface of the substrate edge; a probe in operative communication with the coating and the substrate edge; and a controller in operative communication with the probe.

Abstract: Aircraft may include electric motors. The aircraft electric motors may include a rotor assembly comprises an outer diameter portion, and inner diameter portion, and an end portion, arranged to define a stator cavity, and a rotor hub configured to connect to a shaft of the aircraft electric machine, a stator assembly arranged within the stator cavity, and at least one fan assembly arranged in the rotor assembly and configured to induce a cooling flow through the stator cavity.

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 compliant consolidation block is provided. The compliant consolidation block includes a non-articulating component, a first articulating self-aligning component coupled to the non-articulating component, and two second articulating self-aligning components coupled to the first articulating self-aligning component. The first articulating self-aligning component is configured to articulate with respect to the non-articulating component. Each of the two second articulating self-aligning components are individually configured to articulate with respect to the first articulating self-aligning component.

Abstract: Stators for aircraft electric motors include a cantilever structure having a supported end and an unsupported end, wherein the cantilever structure includes an inlet support manifold and an outlet support manifold arranged at the supported end and a plurality of cooling plates extending from the inlet support manifold and the outlet support manifold to the unsupported end. A plurality of coils are arranged between and in thermal contact with the cooling plates and a core passes through the plurality of coils and the plurality of cooling plates. Each cooling plate defines a cooling channel that fluidly couples the inlet support manifold and the outlet support manifold, and the coils and the core are structurally supported by the plurality of cooling plates in a cantilevered manner at the supported end.

Abstract: A system for deep rolling a workpiece including a roller tool comprising an adaptor plate proximate an adapter end; an arm attached to the adaptor plate, the arm comprising an adapter end proximate the adaptor plate, the arm comprising a roller end opposite the adapter end, the arm comprising a midspan portion between the adapter end and the roller end, an offset formed in the arm configured to prevent contact with the workpiece; a roller disk joined to the roller end, the roller disk configured to contact the workpiece; and a fixture supporting the workpiece.

Abstract: According to an aspect of the present disclosure, an ultrasonic welding tool having a longitudinal axis is provided that includes an ultrasonic tool, a tapered step horn, an ultrasonic transducer, and a plurality of helical grooves. The ultrasonic tool (UT) has a diameter, a UT length extending between a UT first end and a distal tool tip, and a UT exterior surface that extends around a UT circumference of the ultrasonic tool. The tapered step horn (SH) has an SH length that extends between an SH first end and an SH second end, a major diameter disposed at the SH first end, a minor diameter disposed at the SH second end, a middle diameter between the SH first end and the SH second end, and an SH exterior surface that extends around an SH circumference of the step horn. The SH second end of the step horn is connected to the UT first end of the ultrasonic tool. The ultrasonic transducer is in communication with the step horn and the ultrasonic tool.

Abstract: A control head for a modular control unit of a urinary relief system is disclosed herein. The control head includes a pressurized gas source input, a toggle configured to activate a pressurized gas source coupled to the pressurized gas source input, a first connector fluidly coupled to the pressurized gas source input and configured to allow a first gas from the pressurized gas source input to flow through the control head, and a second connector fluidly coupled to the first connector and configured to allow a second gas to pass through the control head.