Abstract: Route planning and movement of an aircraft on the ground based on a navigation model trained to improve aircraft operational efficiency is provided herein. A system comprises a memory that stores executable components and a processor, operatively coupled to the memory, that executes the executable components that comprise an assessment component, a sensor component, and a route planning component. The assessment component accesses runway data, taxiway data, and gate configuration data associated with an airport. The sensor component collects, from a plurality of sensors, sensor data related to performance data of an aircraft and respective conditions of the runway, the taxiway, and the gate configuration data. The route planning component employs a navigation model that is trained to analyze the sensor data, the runway data, the taxiway data, and the gate configuration data, and generate a taxiing protocol to navigate the aircraft to improve aircraft operational efficiency.

Abstract: A method and apparatus for operating a power architecture for an aircraft, includes a primary variable frequency generator system having a first power output, a secondary variable frequency generator system having a second power output, a power distribution node, an essential power bus selectively connected with a set of essential aircraft electrical loads, and a controller module.

Abstract: A rotor assembly (40) for an electric machine including a core (42) having at least one post (44) about which a winding may be wound, and a cap (52) coupled to the post (44) and having a portion overlying a winding (46), wherein the cap (52) comprises a plurality of laminations and the core (42) does not comprise a plurality of laminations.

Abstract: A method and decoupler for disengaging an output shaft from an engine in a back drive event with a backdrive decoupler. The backdrive decoupler includes a threaded shaft and a retention mechanism selectively coupling the output shaft to the threaded shaft. In a backdrive event, the decoupler decouples the output shaft from a drive shaft.

Abstract: One example aspect of the present disclosure relates to a method for scheduling a vehicle wash. The method can include receiving, at one or more computing devices, data indicative of an actual performance efficiency factor, wherein the data is collected from one or more sensors. The method can include determining, at the one or more computing devices, an expected performance efficiency factor based on a model. The method can include performing, at the one or more computing devices, a comparison of the actual performance efficiency factor with the expected performance efficiency factor. The method can include scheduling, at the one or more computing devices, the vehicle wash based on the comparison.

Abstract: A method for manufacturing a stator assembly for an electrical machine includes printing a stator core. The method also includes printing a first part of a stator winding. In addition, the method includes coupling the first part of the stator winding to the stator core. The method also includes printing a second part of the stator winding onto the first part of the stator winding to form the stator assembly. In particular, coupling the first part of the stator winding to the stator core precedes printing the second part of the stator winding onto the first part of the stator winding.

Abstract: Automatic display unit backup during failures of one more display units through the utilization of graphic user interface objects defined for control transfer and reversion after resolution of the failures is provided herein. A system can comprise a memory operatively coupled to a processor that executes stored executable components comprising a first controller, a second controller, and a failure indication component that provides a first notification based on a first detection of a first failure at the second controller, and a second notification based on a second detection of a second failure at the first controller. Further, the executable components can comprise a control transfer component that automatically transfers control of a second display unit from the v controller to the first controller based on the first notification, or control of a first display unit from the first controller to the second controller based on the second notification.

Abstract: Pitch control assembly and propeller blade assembly having a spider hub are disclosed. The spider hub includes a hub and a set of arms spaced circumferentially about the hub and projecting radially from the hub, wherein the set of arms are configured to receive a set of blades such that a blade root of a blade is rotationally mountable into an arm included in the set of arms, a crosshead located within the hub and axially moveable relative to the hub, a torque tube located in the arm and extending into the hub, wherein a pitch angle of the blade can be adjusted by axially moving the crosshead to rotate the torque tube to effect a corresponding rotation of the blade.

Abstract: A heat sink assembly for use with at least one heat-emitting component where the heat sink assembly includes a first phase change material conductively coupled to the at least one heat-emitting component and changing phase at a first temperature and a second phase change material conductively coupled to the first phase change material and changing phase at a second temperature, which is greater than the first temperature.

Abstract: A liquid cooling circuit includes a liquid reservoir for coolant, a heat-generating module, a conduit fluidly coupling the heat-generating module with the liquid reservoir, and a pump configured to move the coolant through the conduit to cool the heat-generating module. The liquid cooling circuit is configured such that the movement of the coolant relative to the heat-generating module transfers heat from the heat-generating module to the coolant.

Abstract: A power system and method of operating the power system includes a first power source and a second power source arranged in a series, a first electrical load and a second electrical load arranged in series with first and second power sources, and a set of bypass current paths independently associated with at least a subset of the first power source, the second power source, the first electrical load, and the second electrical load.

Abstract: A rotor assembly for an electric machine includes a core having at least one post and a cap wherein electrical windings are wound about the rotor assembly to define a pole. The rotation of the rotor and rotor pole relative to a stator generates a current supplied from the electric machine to a power consuming device.

Abstract: A method for determining uncertainty in a predicted flight path for an aerial vehicle can include determining, by one or more computing devices, uncertainty in a performance model of the aerial vehicle. The method can further include determining, by one or more computing devices, uncertainty in a weather model indicative of weather conditions along the predicted flight path. In addition, the method can include determining, by the one or more computing devices, uncertainty in the predicted flight path based on the uncertainty in the performance model and the uncertainty in the weather model. The method can further include generating, by one or more computing devices, a notification indicating the uncertainty in the predicted flight path.

Abstract: Systems and methods for communicating a signal over a fuel line in a vehicle are provided. In one embodiment, a system can include a fuel line. The fuel line can include at least one communication medium for propagating a communication signal. The system can also include at least one signal communication device configured to receive the communication signal communicated over the fuel line. The system can also include at least one vehicle component in communication with the at least one signal communication device.

Abstract: Techniques for establishing a establishing of a high-bandwidth data connection with an aircraft using highly directional EM beam shaped transmissions are provided. In one example, a method comprises: determining a first line of sight that is unobstructed to an antenna of an aircraft, establishing a wireless data connection having a defined data transfer rate between the aircraft and the communication device using highly directional EM beam shaped transmissions along the unobstructed line of sight, transferring a defined amount of data between the aircraft and the communication device using the wireless data connection.

Abstract: Aspects of the disclosure generally relate to at least one device for heat transfer or dissipation. The at least one device for heat transfer or dissipation can include an air-to-air heat exchanger. The air-to-air heat exchanger can include an air flow inlet and various slots to establish a flow-through air path.

Abstract: An electrical power system architecture and method for allocating power includes a power distribution bus configured to receive power generated by a first engine having a first generator and a second generator, a first set of electrical buses connected with the power distribution bus and associated with the first engine, and a second set of electrical buses configured to selectively connect with the power distribution bus.

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 monitoring performance. The method includes receiving, by one or more computing devices, a measurement from a sensor. The method includes assigning, by the one or more computing devices, a time to the measurement. The method includes storing, by the one or more computing devices, the received measurement and the assigned time to a file. The method includes transmitting, by the one or more computing devices, the file to a remove computing device associated with a ground system.

Abstract: Air starter and methods for determining hydrostatic lock in a combustion engine during a start sequence with an air starter, including during the start sequence of the combustion engine, monitoring a speed parameter indicative of a rotational speed of the turbine air starter and a pressure parameter indicative of an inlet air pressure of the turbine air starter, and determining that a hydrostatic lock condition exists in the combustion engine based on both the speed threshold and the pressure threshold.

Abstract: There are provided circuits and methods for surge protection. For example, there is provided a clamp circuit for protecting a load against a surge. The clamp circuit can include a power dissipation circuit including at least one transistor and a resistor. The clamp circuit can further include a voltage sensitive device configured to cause a voltage limit across the load when the surge occurs. The power dissipation circuit can be configured to turn on the at least one transistor to dissipate power across one of the resistor and the at least one transistor.