Abstract: A method for verifying data and control couplings of software under test comprises obtaining software architecture and design information for the software; extracting expected control coupling information based on an order in which software component calls are in the software architecture; extracting expected data coupling information from one software component to another software component in a sequence diagram; updating the expected control and data coupling information in an expected control and data coupling sequencing table; deriving actual control coupling information from execution trace data obtained from a requirements based test execution; deriving actual data coupling information from data trace information; and updating the actual control and data coupling information in an actual control and data coupling sequencing table.

Abstract: A method comprises providing first and second end systems sharing the same A619 origin and destination codes, wherein the first end system has a first A618 label/sublabel, and the second end system has a second A618 label/sublabel different from the first label/sublabel. When an uplink message is an A618 uplink with the first label/sublabel, the method sends an A619 uplink with A619 destination code via a first end system port. If an uplink message is an A618 uplink with the second label/sublabel, the method sends an A619 uplink with A619 destination code via a second end system port. When downlink message is received with the A619 origin code on the first end system port, the method sends an A618 downlink with the first label/sublabel. If downlink message is received with the A619 origin code on the second end system port, the method sends an A618 downlink with the second label/sublabel.

Abstract: Disclosed are methods, systems, and computer-readable medium for facilitating remote user airspace communication. For instance, the method may include: connecting with a user device associated with and remote from a first vehicle in a shared air traffic control sector; receiving voice communication data from at least one of the user device, a second vehicle in the shared air traffic control sector, and an air traffic control station in the shared air traffic control sector; generating analog data or digital data based on the received voice communication data; determining a recipient for the generated analog data or generated digital data in the shared air traffic control sector; transmitting the generated analog data or generated digital data to the recipient; and terminating the connection with the user device as the first vehicle leaves the shared air traffic control sector.

Abstract: A computer-implemented method may be used for training aircraft operators. The method may include determining a set of recommended flight training topics for a target aircraft operator, and receiving flight data recorded from simulator training performed by the aircraft operator or operation of aircraft by the aircraft operator. Additionally, the method may include analyzing the flight data to determine a proficiency evaluation, the proficiency evaluation being a measure of proficiency of the aircraft operator in one or more training topics, and adjusting the set of recommended flight training topics based on proficiency evaluation.

Abstract: Non-coaxial systems, methods, and devices for detecting smoke are described herein. A smoke detection system may comprise a laser emitter configured to emit a laser beam, and a light receiver. The light receiver may comprise a first receiver lens, wherein a field of view of the first receiver lens includes at least a portion of the laser beam. The light receiver may also comprise a second receiver lens, wherein a field of view of the second receiver lens includes at least a portion of the laser beam and a region between an edge of the field of view of the first receiver lens and the laser emitter.

Abstract: A protective face shield assembly is provided. The example protective face shield assembly includes a protective element, a frame, and a face seal. The frame defines a continuous inner frame edge and a continuous outer frame edge. The face seal includes a top portion, a bottom portion, and two side portions as a continuous unit, defining a continuous inner face seal edge and a continuous outer face seal edge. The continuous inner face seal edge is removably affixed against the continuous inner frame edge. The continuous outer face seal edge encapsulates an elastic band that fits against at least a front half portion of the head and face of a user. The face seal contains one or more layers of filter medium suitable for removing particulate matter from the air that flows from exterior air space and into interior air space.

Abstract: A method for detecting failure of multiple satellite signals comprises receiving satellite signals in a GNSS receiver; processing the satellite signals in a Kalman filter to produce a navigation solution and sub-solutions; and performing at least one of a residual monitoring process, or a state corrections monitoring process. In the residual monitoring process, for each sub-solution, expected and actual residuals are computed and compared to determine whether the actual residuals are greater than a threshold; multiple erroneous measurements are detected when at least one actual residual is greater than the threshold for each sub-solution.

Abstract: A system comprises a vehicle radar sensor including an antenna, transmitter, receiver, and processor. The processor hosts a scanning control module that sends a control signal to the transmitter, receiver, or both, to generate radar beams; and a signal processing module that receives a reflected signal from the receiver to generate radar data. The system also includes an onboard application module and ground surface database. The application module is operative to access information from the surface database, access position and attitude data, access position and attitude uncertainty data, access radar installation data, and access radar data from the signal processing module; identify ground surface areas to be avoided based on the information from the surface database, the position and attitude, the position and attitude uncertainty, and the radar installation data; and perform modified radar operations and/or processing when the ground surface areas to be avoided are within a radar FOV.

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: A system and method of testing a part manufactured using an additive manufacturing process. The part may be excited via an input mechanism that imparts an excitation force on the part to induce a dynamic response in the part. An output mechanism may be used to sense the dynamic response in the part. A processing element may be used to compare the dynamic response with a reference to identify an indication of excess powder in the part.

Abstract: A sensor system comprises a laser source that emits a pump beam at a first wavelength and a probe beam at a second wavelength, and an optical means for receiving the pump and probe beams. The optical means is operative to generate a plurality of light beams, each having a different frequency, from the pump and probe beams. One or more cells receive the light beams from the optical means and allow passage of the light beams therethrough, with the cells containing alkali atoms. A dichroic filter is configured to receive the light beams from the cells. The dichroic filter separates pump beam light and probe beam light from the light beams. A detector array receives the probe beam light from the dichroic filter. The detector array includes a two-dimensional array of photosensors that map out transmission of respective light beams corresponding to the probe beam light through the cells.

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: System and methods are described that illustrate how to more accurately determine at least one state variable of a vehicle using imaging of a travel way line. Imaging can be used to determine an angle between a longitudinal axis of the travel way line and a longitudinal axis of the vehicle, a shortest distance between the center axis and a reference point on or in the vehicle, and corresponding errors. The determined angle, the determined distance, and the corresponding errors can be used to more accurately determine the at least one state variable.

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: 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 system for detecting satellite signal spoofing using error state estimates is provided. The system includes at least one satellite receiver to receive satellite signals, at least one memory and at least one controller. The at least one memory is configured to store at least operation instructions. The at least one controller is in communication with the at least one satellite receiver and the at least one memory. The at least one controller is configured to determine state estimates from the received satellite signals. The at least one controller is further configured to determine error state estimates based at least in part on differences in current state estimates and differences in delayed state estimates. The controller further configured to determine if spoofing is occurring in one more of the received satellite signals when the error state estimates are greater than a select threshold.

Abstract: A caul for debulking a composite part broadly includes opposing first and second surfaces, a plurality of through-holes, and a coating. The first surface may have a curvature complementary to a shape of the composite part. The through-holes pass through the caul from the first surface to the second surface. The coating may be a chemically inert material to ensure the caul does not affect the composite part. The caul is configured to be positioned against the composite part for debulking. The caul may be made out of silicone rubber or any other suitable material and may be reusable.

Abstract: Various embodiments are directed to an adjustable insole for a footwear article. In various embodiments, the adjustable insole comprises an insole body comprising a heel bottom cavity defined by a cavity opening provided along an insole body bottom surface; and a removeable heel bottom insert configured to be disposed within the heel bottom cavity such that a first insert portion is disposed within the heel bottom cavity and a second insert portion defines a lowermost surface of the adjustable insole, the removeable heel bottom insert having a selectively adjustable configuration relative to the insole body that is defined by an arrangement of the removeable heel bottom insert within the heel bottom cavity in one of a nominal position and a rotated position defined relative to the nominal position by a rotation of the removeable heel bottom insert through an angle of rotation of at least approximately 90 degrees.

Abstract: A process for the treatment of sulfidic spent caustic, conditioned catalyst regeneration vent gas, C4 isomerization off gas, various and hydrocarbon containing liquid and gaseous streams in addition to toxic containing streams like cyanidic off gas and waste water in a propane/butane dehydrogenation complex is described. Various effluent streams are combined in appropriate collection vessels, including an off-gas knockout drum, a hydrocarbon buffer vessel, a spent caustic buffer vessel, an optional a waste water buffer vessel, and a fuel gas knockout drum. Streams from these vessels are sent to a thermal oxidation system.