Abstract: A method of opening a cargo door of an aircraft, the aircraft including a body with an opening into a cargo bay, and a cargo door which covers the opening when it is in a closed position. A cargo door is outwardly rotated with a first actuator from the closed position to a first open position. Then an actuator rod is installed by coupling a first end of an actuator rod to the body and coupling a second end of the actuator rod to the cargo door in the first open position. Then the cargo door is outwardly rotated with the actuator rod from the first open position to a second open position by increasing a distance between the first and second ends of the actuator rod.

Abstract: An actuation system for a cargo door of an aircraft. The cargo door covers an opening into a cargo bay when it is in a closed position. The actuation system includes a first actuator configured to outwardly rotate the cargo door from the closed position to a first open position, and a second actuator configured to outwardly rotate the cargo door from the first open position to a second open position.

Abstract: A component includes at least a first sub-component and a second sub-component each fully or partially including metal or metal alloy material or having an at least partially metallized surface or surface region, the first sub-component and the second sub-component providing a pair of connection interfaces configured to establish a permanent connection of the first sub-component and the second sub-component, wherein at least one of the pair of connection interfaces comprises nanowires. The disclosure further provides a method for manufacturing such a component.

Abstract: An aircraft fuselage includes fore and aft sections, a barrier wall separating the sections and an opening therebetween, a rail attached to the barrier wall, a door moveable across the barrier wall between an open position offset from the opening and a closed position covering the opening, a first roller and a second roller rotatably fixed to the door and moveable on the rail along first and second paths to move the door, the rail including a first ramp engaging the first roller as it moves along the first path and to direct the first roller towards the barrier wall, and a second ramp engaging the second roller as it moves along the second path and to direct the second roller towards the barrier wall, the first roller configured to engage the first ramp as the second roller engages the second ramp to move the door towards the barrier wall.

Abstract: A component for an aircraft and an aircraft with such component. The component includes a heat source enclosed by a housing, heat exchanger, heat sink, at least one structural suspension element, and an air duct. Each structural suspension element is attached to an inner surface of the housing and supports one or more of the heat source within the housing. The heat sink is part of the housing and configured to guide air from an inside of the housing an outside of the housing. Each heat exchanger is thermally coupled to the heat source. Each heat exchanger is fluidly connected to the heat sink via an inlet line and a return line for a coolant. The air duct is configured to guide ambient air from the outside through the housing, past each of the at least one structural suspension element, and through the heat sink out of the housing.

Abstract: Flat RF tiles for multiple band electrical steerable antennas. To improve an antenna system for a communication between a vehicle and a satellite, a planar antenna array for multiple band satellite communication includes an array of flat RF tiles. Each RF tile includes a structure of antenna elements, wherein a first antenna element arrangement is configured to radiate in an uplink and downlink portion of a first satellite communication frequency band and a second antenna element arrangement is configured to radiate in an uplink and downlink portion of a second satellite communication frequency band.

Abstract: A method for producing a panel with integrated conductor tracks and electronic components. The panel includes a panel body, wherein the panel body is in particular a sandwich structure, and a membrane. The membrane is connected to the panel body and has integrated conductor tracks and electronic components. At the beginning of the method, an operation for attaching the conductor tracks and the electronic components to the membrane is provided. The subsequent step includes an operation for connecting the membrane, fitted with the conductor tracks and the electronic components, to the panel body.

Abstract: A joining method and assembly for an aircraft. To improve the characteristics or permit hitherto impossible connections between thermoplastic and thermoset components, a multi-material joining method is disclosed in which a thermoplastic connecting region is formed on the thermoplastic component. The connecting region is connected to the thermoset component by interdiffusion. For this purpose, the uncured second component is brought into contact with the connecting region and heat is supplied. An interdiffusion layer is formed which fixedly connects the second component and the connecting region to one another and thus joins the first component to the second component.

Abstract: A cooling device for use in alternating magnetic fields include an evaporator part defining a first volume for evaporating a cooling medium contained therein, the evaporator part being made of an electrically and magnetically non-conductive material, and a condenser part defining a second volume for condensing the cooling medium contained therein, the condenser part being in fluid connection with the first volume.

Abstract: A network system includes access points and wireless devices. Each wireless device can exchange data with at least one access point that includes a diversity matrix defining at least two data exchange connections between a first wireless device and at least one access point for exchanging data between the first wireless device and the at least one access point. The diversity matrix indicates a space domain with at least one access point, a frequency domain with at least one data transmission frequency value, and a time domain with at least one data transmission time. Each data exchange connection is defined by an access point, a data transmission frequency, and a data transmission time, selected from the diversity matrix. The at least two data exchange connections between the first wireless device and the at least one access point are configured to transmit the same information.

Abstract: Methods, systems, and computer readable media for utilizing a linear sequence coding scheme. In some embodiments, a method for utilizing a linear sequence coding scheme includes at a first computing device generating, using a linear sequence coding scheme and a source message, coded network packets, wherein each of the coded network packets indicates coded symbols, wherein each of the coded symbols is linear independent, and sending, via a lossy channel or a wireless channel, the coded network packets.

Abstract: Methods, systems, and devices for free-space optical communications. An aircraft includes a flat optical communication terminal on an external surface of the aircraft, the flat optical communication terminal being configured to communicate with a ground station via a free-space optical communication link.

Abstract: A method for optimizing a modification of an ad-hoc-edge network with a resource-aware service allocation strategy is described for deployment of a multitude of correlated microservices, which define a service, on an ad-hoc-edge network topology including a multitude of edge devices and a multitude of mobile computational devices with limited resources, interconnected in an ad-hoc manner. The services are thereby not deployed as a monolithic element in a single computational device, but as a set of correlated microservices, each of which can be deployed and executed in a different mobile computational device. Hence, an efficient allocation and scheduling of computational tasks among the set of resource constrained devices, for example energy consumption, ensure the proper execution of the overall service.

Abstract: An electrical energy storage system includes electrochemical energy storage cells for collecting, supplying and storing electrical energy, a contacting device for contacting the energy storage cells, and temperature sensors for monitoring temperature of individual energy storage cells. The electrochemical energy storage cells include a first and second electrical terminal, the contacting device including conductors. A first contacting element connects the first electrical terminal of each cell and a first conductor of the contacting device. A second contacting element connects the second electrical terminal of each cell and a second conductor of the contacting device. The temperature sensors include a thermocouple having a first element from a first metal material and a second element from a second metal material. The first element is connected to one of the terminals or the body of the energy storage cell and the second element is connected to the first element or the body of the energy storage cell.

Abstract: A filling level monitoring device for monitoring a filling level of a fluid in a container includes exciter(s), sensor(s), a signal source connected to the exciter(s), a processor, at least one spatial orientation and acceleration sensor, and a filling level indicator. The device uses the signal source and the exciter(s) to couple vibrational loads having multiple frequency components into the container. Sensors measure vibrations in the container after the exciters transmit the vibrational loads into the container. The processor performs spectral analysis of the input signal and of vibration signals from the sensors, comparing these respective spectral functions to extract resonance frequencies of the container, which are based on the spatial orientation of the container.

Abstract: To improve measurement or assessment of fatigue damage to parts, a computer-implemented method for measuring striation properties of fatigue striations on a sample surface of a part is disclosed. A sample surface is imaged using a scanning electron microscope to obtain a sample image potentially containing the fatigue striations. A sample image patch potentially containing fatigue striations is selected from the sample image. After normalizing the sample image patch and enhancing line-like regular structures contained in the sample image patch, the normalized image patch is autocorrelated, Radon transformed and spectrally analyzed. The resulting power spectrum of the transformed image patch contains information about striation properties of the fatigue striations contained in the sample image, if any fatigue striations are present. Furthermore, a system for performing the method is disclosed.

Abstract: The method includes a step of acquisition of an image of the leading aircraft, a step of extraction of the outline, an adjustment step including implementing an outline registration algorithm, to determine an optimized profile from a comparison of the outline of the leading aircraft with a profile of the leading aircraft determined from a three-dimensional model of the leading aircraft and from an initial position of the following aircraft with respect to the leading aircraft, and a step of determination of the positioning according to six degrees of freedom of the following aircraft with respect to the leading aircraft, from the optimized profile and from the three-dimensional model of the leading aircraft. The method thus makes it possible to rapidly and accurately determine the positioning of the following aircraft with respect to the leading aircraft, this positioning being used to implement a formation flight.

Abstract: A method for determining, onboard a first mobile entity, a level of trust for a second mobile entity in communication with the first mobile entity, and a communication system implementing the method are described. The method includes determining), by the first mobile entity, direct trust data, calculating an initial reputation indicator based on the direct trust data, including a belief value, a disbelief value, an uncertainty value, and a base trust rate, calculating a confidence level based on the belief value, the base trust rate, and the uncertainty value, and determining an updated reputation indicator based on the initial reputation indicator and the confidence level. The base trust rate is indicative of the trust level for data transmitted from an unknown mobile entity not in contact with the first mobile entity. The updated reputation indicator indicates a level of trust of the first mobile entity in the second mobile entity.

Abstract: A pump arrangement for providing a saturated or subcooled liquid includes a tank for saturated liquid, a heat exchanger for cooling the saturated liquid, a pump, an expansion valve, and an output for feeding saturated or subcooled liquid to a consumer. A tank outlet is in fluid communication with a liquid inlet of the heat exchanger, such that saturated liquid stored inside the tank can flow into the heat exchanger designed to sub-cool the saturated liquid. A liquid outlet of the heat exchanger is in fluid communication with a pump inlet. The expansion valve outlet is in fluid communication with a coolant inlet of the heat exchanger. An expansion valve inlet is arranged for receiving and expanding a fraction of liquid flowing through the pump arrangement and routing it into the coolant input to at least partially evaporate and receive evaporation enthalpy of the liquid to be subcooled.

Abstract: A semi-active noise control system includes a layer configured to be part of an interior panel of an aircraft The layer includes conductive tracks, a driver arrangement, tuned mass dampers, and sensors. Each tuned mass damper has an eigenfrequency that depends on a control signal applied to the tuned mass damper and is connected to the driver arrangement via a conductive track and configured to receive control signals from the driver arrangement. Each sensor is connected to the driver arrangement via a conductive track and is configured to sense vibrations and/or acoustic sounds and send measurement signals to the driver arrangement. The driver arrangement is configured to analyze the measurement signals and to generate and send control signals to the tuned mass dampers such that the eigenfrequency of the tuned mass dampers is matched with the frequency of the vibrations and/or acoustic sounds sensed by the sensors.