Abstract: A power device can include a first conductive terminal, a second conductive terminal, a power overlay having a conductive backplane and solid state switches, and a controller module configured to selectively operate the solid state switches to enable conductive communication between the first conductive terminal and the second conductive terminal.

Abstract: A method for manufacturing a main rotor for a generator is provided. The method includes printing at least part of a rotor shaft by a three-dimensional printing process. The step of printing at least part of the rotor shaft includes printing a plurality of closed outlets and a plurality of open outlets. A rotor core is printed by the three-dimensional printing process. The step of printing the rotor core includes printing a plurality of liquid coolant conduits that extend through the rotor core and fluidly connecting the plurality of liquid coolant conduits to the plurality of closed openings.

Abstract: A rotor assembly includes a rotor core having winding slots, and one or more coils, which have slot-inserted segments included in the winding slots, and first and second end-turn segments external to the winding slots and located around opposite axial ends of the rotor core, respectively. The rotor assembly further includes a first containment band located around at least a portion of the first end-turn segments and configured to prevent the first end-turn segments from moving away from the rotor core radially, a second containment band located around at least a portion of the second end-turn segments and configured to prevent the second end-turn segments from moving away from the rotor core radially, and one or more sticks mounted in one or more of the winding slots, respectively. The first and second containment bands are retained via the sticks against moving away axially.

Abstract: One example aspect of the present disclosure is directed to a system for cooling a surface. The system can include a housing. The housing can include an evaporator portion. The housing can include at least one trifurcated heat exchange portion. The at least one trifurcated heat exchange portion can include a condenser portion coupled to the evaporator portion. The at least one trifurcated heat exchange portion can include a coolant portion substantially surrounded by the condenser portion. The at least one trifurcated heat exchange portion can include a phase change material portion substantially surrounding the condenser portion.

Abstract: A control box includes a housing defining an interior, the housing including a cover and a stiffener, the stiffener removably connected in contact with the cover, the stiffener including an outer frame and at least one cross-member. The control box further includes a heat sink removably connected in contact with the stiffener. The control box further includes a first circuit board disposed within the interior, the first circuit board positioned between the stiffener and the heat sink, and a second circuit board disposed within the interior, the second circuit board positioned between the cover and the stiffener. The cover, stiffener, and heat sink are stacked along a transverse direction.

Abstract: A control system for an unmanned vehicle (UV) comprises a housing defining an interior, a first circuit board disposed within the interior, and a second circuit board disposed within the interior. The first circuit board includes one or more processing circuits including a first processing system and a second processing system having heterogeneous field programmable architectures. The second circuit board includes a plurality of interface circuits associated with a plurality of vehicle devices of the UV. The second circuit board is in operative communication with the first circuit board and includes an input/output (I/O) interface between the plurality of interface circuits and the first and second processing systems.

Abstract: A processing system for an unmanned vehicle (UV) such as an unmanned aerial vehicle (UAV) is provided. The processing system comprises a first processing unit of an integrated circuit and a second processing unit of the integrated circuit. The processing system comprises a first operating system provisioned using the first processing unit. The first operating system is configured to execute a first vehicle control process. The processing system comprises a virtualization layer configured using at least the second processing unit, and a second operating system provisioned using the virtualization layer. The second operating system is configured to execute a second vehicle control process.

Abstract: A rotor for an electric machine includes a core having circumferentially-spaced, axially-extending posts, and defining an axial passage, a winding carried by each of the posts and comprising an electrically-conductive wire repeatedly wound around the post such that a portion of the winding extends axially beyond the post to define an overhang with upper and lower surfaces connected by an end, and a hollow shaft defining a rotor inner surface and a rotor outer surface.

Abstract: Systems and methods for recording and communicating engine data are provided. One example aspect of the present disclosure is directed to a method for communicating engine data. The method includes receiving data. The method includes separating the data into categories. For one or more categories, the method includes creating a file including the separated data. For one or more categories, the method includes naming the file, at least in part, based on the category and based on a file naming convention. The method includes prioritizing the created files. The method includes transmitting an identification file comprising identification information for a wireless communication unit and the file naming convention. The method includes transmitting the created files based on the priority.

Abstract: An apparatus and method for a generator for generating power having a rotary union between a rotor and a stator, the rotary union comprising a first fluid passage having a converging nozzle and located within the stator having a first inlet and a first outlet, a second fluid passage having a diverging nozzle and located within the rotor and having a second inlet and a second outlet, the second inlet is aligned with the first outlet and at least one gap located between the rotor and stator.

Abstract: Providing an open interface to a navigation system is provided herein. A single partition (or more than one partition) of a partitioned operating system can be utilized to provide connectivity between a navigation system and one or more user equipment devices. Thus, the navigation system and the one or more user equipment devices can be communicatively coupled via the at least one partition. Further, a Software Development Kit (SDK) can be configured to enable bi-directional communication between the navigation system and the one or more user equipment devices. In addition, the SDK can provide security for the navigation system when communicating with the one or more user equipment devices.

Abstract: Systems and methods for managing aircraft messages are provided. In one embodiment, the method can include receiving a message from an onboard system of an aircraft. The method can include determining a priority associated with the message based, at least in part, on data associated with the message. The data can be indicative of at least a content of the message. The method can include determining data indicative of availability for each of a plurality of communications networks based, at least in part, on one or more first parameters associated with the aircraft. The method can include selecting a network based, at least in part, on message priority, the data indicative of availability, and one or more second parameters associated with each of the networks. The method can include sending the message via the selected network when the network is available, or storing the message when the network is unavailable.

Abstract: A solar generator can include a photon-enhanced thermionic emission generator with a cathode to receive solar radiation. The photon-enhanced thermionic emission generator can include an anode that in conjunction with the cathode generates a first current and waste heat from the solar radiation. A thermoelectric generator can be thermally coupled to the anode and can convert the waste heat from the anode into a second current. A circuit can connect to the photon-enhanced thermionic emission generator and to the thermoelectric generator and can combine the first and the second currents into an output current.

Abstract: A modular power overlay architecture includes at least two sets of power overlay tiles arranged to provide for or meet a desired power overlay architecture demand. The power overlay assembly can include a base having seats to receive the power overlay tiles. The power overlay tiles can include power switching components arranged relative to a conductive surface commonly arranged relative to each of the at least two sets of power overlay tiles.

Abstract: A heat exchanger for cooling a component includes a heat transfer chamber containing a heated substance having a first density and a liquid coolant having a second density. The heat exchanger can also include a circulation circuit that recirculates the heated substance through the heat transfer chamber for mixing with the liquid coolant.

Abstract: There is provided a method for implementing an electronic card. The method can include providing the electronic card with a printed circuit board. The method further includes selecting one of a first side and a second side as a specified side on which only connection hardware is to be mounted. The first side is located at a first x-y plane and the second side is located at a second x-y plane, the first and second x-y planes being separated by a length equal to a thickness of the PCB. The first and second x-y planes are parallel.

Abstract: A system-on-module (SOM) for controlling an unmanned vehicle (UV) is provided. The SOM comprises a circuit board, a first processing system in operative communication with the circuit board, and a second processing system in operative communication with the circuit board. The first processing system includes one or more first processing units and a volatile programmable logic array. The first processing system is configured to execute a first process for the UV. The second processing system includes one or more second processing units and a non-volatile programmable logic array. The second processing system is configured to monitor execution of the first process by the first processing system.

Abstract: One example aspect of the present disclosure is directed to a method for operating a gas turbine engine. One example aspect of the present disclosure is directed to a method for operating a gas turbine engine, the gas turbine engine including at least a high pressure spool and a low pressure spool. The method includes causing, by one or more control devices, electrical power to be drawn from the high pressure spool and the low pressure spool into a power distribution system. The method includes determining, by the one or more control devices, a power adjustment event associated with the high pressure spool. The method includes initiating, by the one or more control devices, a power assist operation to redirect electrical power to the high pressure spool based at least in part on the power adjustment event.

Abstract: A method and system of determining or predicting a climb profile for an aircraft, includes receiving, by a controller module, an initial climb profile defining a portion of a flight plan for the aircraft between takeoff and a cruise profile, and an altitude climb constraint defining at least one altitude limitation of the aircraft, determining, by the controller module, that the initial climb profile does not satisfy the altitude constraint, and determining an updated climb profile based on a set of subsequent climb models.