Abstract: A method and system for providing gyroscope bias self-calibration are described herein. The method comprises powering on one or more gyroscopes; after a predetermined first period of time, and upon determining that the one or more gyroscopes is stationary, measuring input rates of rotation during a predetermined second period of time; and determining an average rate of rotation for each gyroscope channel based upon the measured input rates of rotation during the predetermined second period of time. After determining the average rate of rotation and after the predetermined second period of time, the method further comprises commencing additional measurements by the one or more gyroscopes; determining calibrated gyroscope measurements by subtracting the average rate of rotation from each of the additional measurements; and providing, at the output of the one or more gyroscopes, the calibrated gyroscope measurements.

Abstract: Methods and systems are provided for displaying visualizations of a vehicle's capability with respect to an input query corresponding to a prospective action to modify operation of the vehicle. One method involves identifying one or more input query parameters, obtaining current status information for the vehicle, identifying one or more performance constraints for the vehicle, and determining a capability envelope for the vehicle for satisfying the one or more input query parameters for the prospective action based at least in part on the current status information and the one or more performance constraints. The capability envelope includes a plurality of potential trajectories for the vehicle different from a reference trajectory for the vehicle. The method provides graphical indicia of the one or more input query parameters and the capability envelope with respect to the reference trajectory on a navigational map display.

Abstract: A facial recognition system includes a memory for storing a facial image database, wherein the facial image database includes a plurality of entries each corresponding to a different person, and wherein each entry includes a person identifier along with one or more facial images of the person. The facial recognition system further includes a facial recognition module that is operatively coupled to the memory. The facial recognition module is configured to receive a new facial image, and to select one or more facial recognition engines based on one or more facial image parameters of the new facial image, and to use the selected facial recognition engines to compare the new facial image with facial models that are based upon facial images stored in the facial image database in order to identify the person in the new facial image.

Abstract: A protection cup (100) for a hearing protection device (HPD) and a method for manufacturing a protection cup (100). The protection cup (100) includes a plurality of fractal elements disposed on an inner surface (101) of the protection cup (100).

Abstract: Disclosed are methods, systems, and non-transitory computer-readable medium for controlling an automatic descent of a vehicle. For instance, the method may include: determining whether a descent trigger condition is present; and in response to determining the descent trigger condition is present, performing an automatic descent process. The automatic descent process may include: obtaining clearance data from an on-board system of the vehicle; generating a descent plan based on the clearance data, the descent plan including a supersonic-to-subsonic transition and/or a supersonic-descent to a target altitude; and generating actuator instructions to a control the vehicle to descend to the target altitude based on the descent plan.

Abstract: Methods and systems for providing off-board recharge station information for an urban air mobility (UAM) vehicle flying on an intended trip. The method includes displaying a map showing the UAM vehicle at a current location, the intended trip, and an endurance line that represents an extent of the available UAM charge. The method retrieves recharge station information including a station name, location, number of recharge ports at the station, and a compatibility type for each of the recharge ports. The method identifies recharge stations that are compatible with the UAM vehicle and can be reached from the intended trip with the UAM available charge, and also updates information associated with the identified recharge stations responsive to a received real-time status update. The method visually depicts the identified recharge stations and visually distinguishes an identified recharge station having a shortest path deviation from the intended trip.

Abstract: A system and method of transmitting an aircraft report (AIREP) from a first aircraft having an enabled aircraft autoland system includes retrieving, via a first processing system, standard AIREP data from one or more avionic systems within the first aircraft, the standard AIREP data including standard AIREP reporting information. The first processing system retrieves autoland enablement data that indicates whether the autoland system was manually or automatically enabled, and also retrieves autoland information data from the one or more avionics systems, where the autoland information data includes current aircraft state data and current flight plan data and is different from the standard AIREP data. The autoland information data is appended to the standard AIREP data to generate an AIREP-autoland message and the AIREP-autoland message is transmitted.

Abstract: Disclosed are methods, systems, and non-transitory computer-readable media for providing contextual building height information to one or more operators of an aircraft. For instance, the method may include obtaining aircraft flight information including a current position and a current altitude of the aircraft; and retrieving, from a database, building information for one or more buildings located in a flight path area, the flight path area including the current position of the aircraft. The method may further include assigning one or more visual characteristics to each of the one or more buildings located in the flight path area based at least in part on the building information and the current altitude of the aircraft; and displaying, to the one or more operators of the aircraft, the one or more buildings located in the flight path area with the assigned one or more visual characteristics.

Abstract: Methods and systems are provided for resolving a user input. One method involves assigning a first identifier to a first stream of messages from a user input device corresponding to a first user input with respect to an application, and while a user interaction state associated with the first stream of messages is active, assigning a second identifier to a second stream of messages from the user input device, and in response to detecting the second identifier corresponds to the first identifier, deactivating the first stream of messages associated with the first stream of messages, wherein deactivating the first stream of messages results in the application responding to the second stream of messages corresponding to the second user input.

Abstract: Systems and methods are provided for power generation, for example, onboard an aircraft. The system comprises a first compressor configured to produce a pressurized air stream from a source of air, an air separation module configured to receive the pressurized air stream and produce therefrom a nitrogen-enriched air stream and an oxygen-enriched air stream, a second compressor configured to produce a pressurized oxygen-enriched air stream from the oxygen-enriched air stream, a hydrogen consuming power generation source configured to receive the pressurized oxygen-enriched air stream, and a turbine that is either coupled to the first or second compressor and configured to receive the nitrogen-enriched air stream from the air separation module, rotate in response to receiving the nitrogen-enriched air stream, and thereby cause rotation of the first or second compressor coupled thereto.

Abstract: A heating, ventilation, and air conditioning system includes an evaporator configured to provide a working fluid in a gaseous state at a first temperature range and a first pressure, and a compressor downstream from the evaporator. The compressor is configured to provide the working fluid in the gaseous state at a second temperature range and a second pressure, and the second temperature range is greater than the first temperature range and the second pressure greater than the first pressure. The system includes a first thermoelectric generator arranged between the evaporator and the compressor. A first end of the first thermoelectric generator is configured to receive the working fluid from the evaporator, and a second end is configured to receive the working fluid from the compressor. The first thermoelectric generator is configured to generate electrical energy based on a temperature difference between the first end and the second end.

Abstract: An article including carbon-carbon composite substrate may be treated with an antioxidant coating prior to use in an oxidizing environment. The antioxidant coating may be configured to reduce oxidation at an external surface of the C—C composition and reduce ingress of oxidants into pores or other open passages defined by the C—C composite substrate to avoid internal oxidation. An example article includes a C—C composite substrate, a bond coat, and an antioxidant coating. The C—C composite substrate defines a friction surface and a non-friction surface. The bond coat is disposed on the non-friction surface. The antioxidant coating may be disposed on at least a portion of the bond coat. The antioxidant coating may include ytterbium disilicate and a sintering aid.

Abstract: A ram air turbine rotor comprises at least one intra-flow path shroud structure coupled between rotor blades, along a radial position between a support disc and an outer rim. The shroud structure includes shroud sectors each coupled between a respective pair of blades. The sectors each include a first edge adjacent to leading edges of the respective pair of blades, the first edge including a first curved segment, and a second edge adjacent to trailing edges of the respective pair of blades, the second edge including a second curved segment. The curved segments are each partially defined by a respective ellipse having a semi-major axis and a semi-minor axis. The semi-major axis is a portion of a spanwise distance between the respective pair of blades. The semi-minor axis is a portion of an axial distance between the leading edge of one blade and the trailing edge of an adjacent blade.

Abstract: A pylon system for coupling an engine to a vehicle is provided. The pylon system includes a vehicle pylon to be coupled to the vehicle. The vehicle pylon includes a seal along a portion of the vehicle pylon. The pylon system includes an engine pylon including an inboard longeron and an outboard longeron. The inboard longeron is coupled to the outboard longeron at a first end of the engine pylon and is spaced apart from the outboard longeron at a second end of the engine pylon. The engine pylon is to be coupled to the engine, and the engine pylon is slidably coupled to the seal such that the engine pylon is movable relative to the vehicle pylon between at least a first position and a second position.

Abstract: Improvements to airborne weather radar systems onboard an aircraft that apply forecasting modeling techniques to output a forecast of future 3-dimensional (3D) radar reflectivity returns, forecasted composite radar image data, forecasted changes to potentially hazardous weather cells, including forecasts of future expected hail size and forecast which regions of airspace may be associated with future convective storms. The range of the forecast may be limited to approximately the range of the weather radar, which may be a few hundred nautical miles. Depending on the type and speed of the aircraft, the forecast duration may be approximately thirty minutes or less, e.g., the amount of time to reach the limits of the radar range.

Abstract: Methods and systems for unlocking an access point of a facility with a mobile device. Permissions and locations of access points of the facility that are accessible to a user of a particular mobile device may be downloaded and a location of the particular mobile device determined. The mobile device may identify one or more access points of the facility that are accessible by the user of the mobile device based on the location of the mobile device and the downloaded permissions and locations of the access points. The method may include displaying on the mobile device a notification of the access points that are identified by the mobile device, receiving a selection of one of the displayed access points from the user via a user interface of the mobile device, sending a command from the mobile device to unlock the selected access point, and unlocking the selected access point.

Abstract: A method of making an electromagnetic coil for use in a high-temperature electromagnetic machine includes pre-coating magnet wire with a high-temperature insulation precursor to produce pre-coated magnet wire, winding, while applying in-situ a glass-ceramic slurry, the pre-coated magnet wire into a predetermined coil shape to produce a wet-wound green coil, and thermally processing the wet-wound green coil to produce a processed coil. In some instances, a second layer of a high-temperature insulation may be applied to the processed coil to produce a further insulated processed coil, and then thermally processing the further insulated processed coil to produce a further processed electromagnetic coil.

Abstract: Methods and systems are provided for autonomous vehicle operation for collision avoidance. One method involves identifying an autonomous operating mode and one or more settings associated with the autonomous operating mode prior to entering an autonomous collision avoidance mode in response to an output from a collision avoidance system, and after entering the autonomous collision avoidance mode, automatically restoring autonomous operation upon deactivation of the autonomous collision avoidance mode. For example, the autonomous operating mode may be automatically reinitiated based on the current vehicle status using the one or more settings in response to deactivation of the autonomous collision avoidance mode when it is determined that the autonomous operating mode is viable based on a relationship between a current vehicle status and the one or more settings associated with the autonomous operating mode.