Abstract: A method for fatigue hot spot screening includes identifying multiple static stress locations neighboring one or more fastener locations and multiple stress concentrations in a finite-element-model of a component in response to analysis results and validated assembly-level analysis results with a computer, generating a fatigue spectrum at each static stress location, generating multiple fatigue analysis control files in response to the fatigue spectrum, reducing the validated assembly-level analysis results, generating a first output file that contains multiple non-fastener stress concentration hot spots in the finite-element-model by a first fatigue analysis at multiple non-fastener stress concentration regions in response to the fatigue analysis control files, calculating one or more local peak stresses for the one or more fastener locations, and generating a second output file that contains multiple fastener hot spots in the finite-element-model by a second fatigue analysis at the fastener locations in res

Abstract: A method for virtual fatigue testing includes reading a coarse-grid finite-element-model of a component from one or more libraries with a computer, and identifying static stress locations neighboring at least one of fasteners and non-fastener stress concentration regions in the component by a static analysis of a component intermediate-grid finite-element-model of the component, identifying hot spot locations in the component intermediate-grid finite-element-model by performing a fatigue screening on the component, generating details for the component intermediate-grid finite-element-model based on the hot spot locations, and predicting crack results by a deterministic durability-and-damage-tolerance analysis of the details for a component fine-grid finite-element-model of the component, calculating a crack margins for the component fine-grid finite-element-model by a probabilistic durability-and-damage-tolerance analysis of the crack results, and generating an output file that contains the final crack initia

Abstract: A system and a method are configured for allowing a first vehicle to refuel a second vehicle. The system and the method include sensors configured to acquire scan data of the second vehicle. A control unit is in communication with the sensors. The control unit is configured to receive the scan data of the second vehicle from the sensors, associate the scan data with a three-dimensional (3D) model of the second vehicle, register the scan data with the 3D model to provide monitored data of the second vehicle, and control one or more of the first vehicle, the second vehicle, or a refueling boom of the first vehicle based on the monitored data.

Abstract: A method is provided for monitoring a machine that is operable to perform a task. The method includes accessing a smart digital twin (SDT) of an instance of the machine, the SDT including discrete modules for storage of data and logic including models of the machine, requirements of the machine, and maintenance actions for the machine. The method includes performing data analytics on values of operating conditions of the machine to determine a state of the machine, using a model from the models of the machine and the logic. The state of the machine is compared to the requirements, and a maintenance action is identified based on the comparison and to cause a change in the state to maintain the requirements. The data of the SDT is updated to include identification of the maintenance action, and an indication of the maintenance action is output for performance on the machine.

Abstract: A system configured to transfer an individual between an area and a toilet within a lavatory includes a base, one or more rollers coupled to the base, and a seating assembly coupled to the base. The seating assembly includes a backrest, a toilet overlay seat configured to be disposed over the toilet, and a seat cover that is movable between a covering position over the toilet overlay seat, and a lavatory use position in which the toilet overlay seat is exposed. A counterbalance is coupled to one or both of the base or the seating assembly. The counterbalance is moveable between a stowed position and a deployed position in relation to the toilet.

Abstract: A method for displaying pilot reports provided. The method comprises graphically displaying a flight plan for an aircraft in a user interface and receiving a number of pilot reports. Icons representing the pilot reports are displayed in the user interface in relation to the flight plan. Respective opacities of the icons in the user interface are progressively decreased according to respective ages of the icons. Each icon expires and disappears from the user interface upon reaching a specified maximum age.

Abstract: A system includes an airflow passage and an air purification element. The airflow passage is configured to confine a flow of air and direct the flow of air toward a space. The air purification element is positioned in the airflow passage and configured to produce a peroxide to oxidize contaminants in air flowing through the airflow passage. The air purification element includes a peroxide-generating structure and a matrix containing a peroxide-activating catalyst configured to activate peroxide produced. The air purification element is configured to produce the peroxide from a water vapor and oxygen in the air within the airflow passage when energized by an energy source, and the matrix is configured to allow the contaminants to contact peroxide activated by the peroxide-activating catalyst.

Abstract: A structural blind sleeve includes a monolithic body. The monolithic body has a sleeve shank having an elongated tubular structure defining a proximal portion and a distal portion, the sleeve shank having a structural portion proximate the proximal portion, a threaded portion proximate the distal portion, and a softened portion between the structural portion and the threaded portion. The structural portion is capable of carrying a clamp-up structural load. The monolithic body further includes a sleeve head connected to the proximal portion of the sleeve shank.

Abstract: A fastening end effector is presented. The fastening end effector comprises a hammering insertion die translatable into and out of a housing of the fastening end effector along a longitudinal axis of the fastening end effector; and grippers positioned circumferentially around the hammering insertion die to hold a head of a fastener against the hammering insertion die, the grippers independently moveable relative to the hammering insertion die.

Abstract: Systems and methods are provided for securement of parts. One embodiment is a method for securing a part during fabrication. The method includes forming an interference fit between a pin and a wall defining a hole, supporting a weight of the part with the interference fit, and rotating the part around an axis of the part while the weight of the part is supported.

Abstract: A method is provided for measuring and quantifying optical distortion of a transparent object using a single image. Embodiments provided herein include a method including: receiving an image of an object and a transparent object, where the object is visible through the transparent object, where a portion of the image of the object is visible through the transparent object is an inside region of interest (iROI), where a portion of the image of the object not viewed through the transparent object is an outside region of interest (oROI); determining measured pixel locations for a plurality of identified pixels in the image, the plurality of identified pixels corresponding to the distinct points in the image; calculating virtual locations in the image representing the distinct points within the iROI; determining, for respective distinct points within the iROI, differences between the virtual location and the measured pixel location.

Abstract: A method of guidance for an aircraft includes obtaining relative position data indicative of a direction from a location of the aircraft to a location of a moving target point. The method also includes determining, based on the relative position data, a location of a virtual leader based on projecting the location of the aircraft onto a virtual leader path, where the virtual leader path corresponds to a straight approach path to the location of the moving target point along a desired approach direction. The method further includes determining, based on the location of the virtual leader, a guidance input to cause the aircraft to follow the virtual leader.

Abstract: A method and apparatus for building a fuselage assembly for an aircraft. A number of fixtures may be drive across a floor to an assembly area to form an assembly fixture. The fuselage assembly may be built on the assembly fixture.

Abstract: An aircraft wing includes a center wing section having a continuous structure that spans beyond a first side of an aircraft fuselage and beyond a second side of the aircraft fuselage. The aircraft wing also includes a first outboard wing section attached to a first end of the center wing section by a first truss system that is accessible via a first closeout panel. The first end of the center wing section in on the first side of the aircraft fuselage. The aircraft wing also includes a second outboard wing section attached to a second end of the center wing section by a second truss system that is accessible via a second closeout panel. The second end of the center wing section is on the second side of the aircraft fuselage.

Abstract: A deployable attendant seat assembly that is configured to deploy in a vehicle cabin from a stowed position as an attendant seat into a deployed position configuring the deployable attendant seat assembly into a lockable barrier to prevent passengers from moving along an aisle in a vehicle cabin into a vehicle area forward of the lockable barrier.

Abstract: A corrosion inhibitor coating composition includes a polymerized thiosemicarbazone, and a thiirane crosslinker, where the thiirane crosslinker is a difunctional molecule. The corrosion inhibitor coating composition can include where the thiirane crosslinker may include an aliphatic thiirane, a tri-functional thiirane, a bisphenol thiirane, or a combination thereof. The corrosion inhibitor coating composition can be metal-free and catalyst-free. An article utilizing and a method of preparing a corrosion inhibitor coating composition is also disclosed, which can include adding a thiourea to a difunctional epoxy terminated molecule in solution in the presence of a catalyst, converting the difunctional epoxy terminated molecule to a thiirane terminated difunctional molecule, and purifying the thiirane terminated difunctional molecule to produce a thiirane.

Abstract: A method, computer program product, and computer system for identifying, by a computing device, a plurality of information associated with a flight simulation. A plurality of charts for a plurality of frame arrivals can be initialized based upon, at least in part, the plurality of information associated with the flight simulation. The plurality of charts can be populated based upon, at least in part, a portion of the plurality of information associated with the flight simulation. At least a portion of the plurality of charts can be combined together. A total amount of bandwidth needed for the flight simulation can be predicted based upon, at least in part, the combining together at least the portion of the plurality of charts.

Abstract: Integrated backscatter X-ray assemblies for detecting backscatter X-rays reflected by a target area of an article under test are disclosed. The integrated backscatter X-ray assembly includes an enclosure, an X-ray power supply, an X-ray tube, a backscatter X-ray detector and a cooling fluid. The X-ray power supply disposed within the enclosure. The X-ray tube disposed within the enclosure and operatively coupled to the X-ray power supply. The backscatter X-ray detector is disposed within the enclosure. The cooling fluid disposed within the enclosure such that the X-ray power supply, the X-ray tube and the backscatter X-ray detector are immersed in the cooling fluid. In various examples, integrated backscatter X-ray assemblies may also include a movable base and/or a mobile platform. Methods for detecting backscatter X-rays reflected by a target area of an article under test are also disclosed.

Abstract: A system and a method for removing a cap seal from a fastener include a seal remover including fingers outwardly extending from a base. Passages are defined between the fingers. The seal remover is configured to be coupled to a distal end of an operative portion of a tool. The tool is configured to be operated to rotate the seal remover in relation to the cap seal so that the fingers remove the cap seal from the fastener. Removed portions of the cap seal are discharged through and out of the passages.

Abstract: A method, computer program product, and computer system for identifying, by a computing device, a plurality of information associated with a flight simulation. A plurality of frame arrivals can be constructed based upon, at least in part, the plurality of information associated with the flight simulation. The plurality of frame arrivals can be packetized into a plurality of data packets. The plurality of data packets can be multiplexed to generate multiplexed data packets. A total amount of bandwidth needed for the flight simulation can be predicted based upon, at least in part, the multiplexed data packets.