Abstract: A method for polarization compensation includes: (a) generating at least one beam of an electromagnetic wave; (b) sending the at least one beam through a physical medium; (c) receiving the at least one beam of an electromagnetic wave after it has traversed the physical medium; (d) measuring the intensity of the electromagnetic wave after it traverses a system of electromagnetic retarders; (e) determining the polarization of the electromagnetic wave after it traverses the system of electromagnetic retarders; (f) calculating the positions of the electromagnetic retarders to match the determined polarization of the electromagnetic wave with the polarization of the generated electromagnetic wave; and (g) compensating the effect of the physical medium on the polarization of the electromagnetic wave by setting the electromagnetic retarders according to the calculated positions.

Abstract: A structural panel for use in aeronautical applications. The structural panel includes a composite skin that comprises composite material and a stiffening framework that is rigidly attached to the composite skin. The composite skin is configured as a load bearing monolithic structure with a structure thickness of less than 1 mm. The composite skin comprises a composite laminate with a plurality of carbon composite plies. Each one of the plurality of carbon composite plies comprises a ply thickness in a range from 0.02 mm to 0.05 mm.

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 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 method for deterministic execution of an instruction set (I) containing instructions (M) to be carried out by a processing unit of the computing device includes the steps of executing a predefined number of pre-branch instructions (A) up to a conditional branch (C) of the instruction set (I) containing at least one branch condition determining a subsequent instruction which is to be executed after the conditional branch (C); predicting at least one of the pre-branch instructions (A) and/or a target instruction (T) to be executed as the subsequent instruction if the at least one condition is met; and inserting the at least one predicted pre-branch instruction (A) and/or the target instruction (T) into the instruction set (I) after the conditional branch (C). A computer program, computer-readable data-carrier, computing device, and apparatus, such as a vehicle, in particular an aircraft may be configured to perform the method.

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.

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: 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.

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 method and device for inspecting the structural damage on the skin of an aircraft after a lightning strike, the skin has marks derived from the lightning strike, wherein the marks represent a Visual Damage (VD) and a Structural Damage (SD). The method includes for every mark: measuring the area of paint that has been removed by the lightning strike, and comparing the measured area with an area threshold value, wherein the threshold value is related to the Structural Damage (SD) of every mark.

Abstract: An aircraft canopy includes a window pane, a frame from a primary structure of the aircraft, and a flange fastened to the frame with fastening screw, characterized in that: the flange is secured to the peripheral edge of the window pane by engaging of at least one plate of the flange between plies of the window pane, so that flange and window pane form an all in one-piece assembly, at each fastening screw, a load-transferring and distributing member is arranged between an outer surface of the flange and the fasting screw, a cavity being provided in the flange for receiving the load-transferring and distributing member, the member having a recess for receiving the screw head.

Abstract: An aircraft fuselage includes at least one space arranged in the aircraft fuselage and at least one wall. The wall resists burnthrough for a period of at least four minutes from outside the aircraft fuselage towards the space, wherein the region of the aircraft fuselage underneath the space does not include burnthrough-resistant insulation. The space may be a cargo compartment of the aircraft or a passenger cabin, while the wall may be designed as a cargo compartment floor, passenger cabin floor or wing/fuselage fairing (belly fairing). The design of the aircraft fuselage results in burnthrough resistance that meets the requirements of FAR §25.856 (b) without any additional burnthrough-resistant insulation in the aircraft fuselage.

Abstract: The invention relates to a system and a method for preventing inadvertent slide deployment for an aircraft, comprising at least one sensor for sensing the proximity of a person in front of an aircraft door, and at least one optical warning means operable to provide an optical indication in the vicinity of a slide arming lever when the sensor detects the proximity of a person in front of the aircraft door. The system according to the invention provides an effective prevention for inadvertent slide deployment that is capable to guide trained and untrained persons to the information they need in order to disarm the slide in sufficient time before the door handle is gripped and pulled to open the aircraft door in normal operation conditions.

Abstract: A system for damage tracking and monitoring during ground handling of aircraft includes a ground service communication network configured to transmit communication data between ground support equipment, GSE, and aircraft; a database configured to store configuration data and status data of GSE and aircraft; and a computer-based system configured to communicate with the ground service communication network and the database. The computer-based system is configured to update the configuration data and the status data of GSE and aircraft stored in the database on basis of communication data received from the ground service communication network. The computer-based system is further configured to estimate a damage source among the GSE for a damage inflicted on the aircraft by one of the GSE by correlating damage characteristics of the damage with the configuration data and the status data from the database.

Abstract: A cargo compartment configured to be installed in an aircraft and to accommodate a plurality of cargo receiving devices is provided. The cargo compartment surrounds a compartment interior space, and includes a floor structure arrangement having a floor surface facing the compartment interior space and configured to support cargo receiving devices loaded into the cargo compartment. The cargo compartment includes two opposite side walls extending laterally of the floor structure arrangement away from the floor surface, and the side walls include an entrance opening for access to the compartment interior space. The floor structure arrangement also includes an air cushion device having a plurality of cushion nozzles distributed in the floor surface, and the cushion nozzles are configured to blow air up from the floor surface in a direction perpendicular to the floor surface.

Abstract: A device for aiding communication in the aeronautical domain, wherein the device includes a transceiver and data processor assembly that records audio messages corresponding to all the incoming and outgoing audio communications, transcribes the messages, in real time, into textual messages, displays the textual messages, and enables an audio play back of the audio messages.

Abstract: The present invention relates to a bending-sustaining joint and an aircraft including the same. The bending-sustaining joint includes a body for attaching to a support structure, the body having a first end with a first bore including an internal thread portion and a non-threaded portion; a sleeve including a fitting portion which can be fit into the non-threaded portion of the first bore, a bearing portion for bearing a born member and a through hole; and a bolt member including a thread section and a bolt head which can abut an end face of the sleeve, the thread section of the bolt member being capable of passing through the through hole of the sleeve and being screwed into the internal thread portion of the first bore so as to secure the sleeve to the body.

Abstract: The disclosure disclosed a connection device for connecting first means of the airplane to second means of the airplane. The first means and the second means are provided with connection regions, which lengthwise extend in a first direction and are connected with each other, respectively. A plurality of finger-like grooves, which are parallel with each other and extend respectively in a second direction inclined relative to the first direction in which the connection region extends, are provided respectively on a connection face of the connection region of the first means and a connection face of the connection region of the second means.