Abstract: An emergency power supply system for providing hydraulic power and electric power in an aircraft includes a fuel cell having an electric outlet for providing electric power, a conversion unit couplable with at least one of an AC bus and a DC bus and the electric outlet, and at least one hydraulic pump having a reconfigurable electric motor and a motor control unit and being couplable with a hydraulic system for providing hydraulic power. The conversion unit is adapted for converting a supply voltage of the electrical outlet to at least one of an AC voltage matching a predetermined voltage at the AC bus and a DC voltage matching a predetermined voltage at the DC bus. The reconfigurable electric motor is couplable with the fuel cell and the AC bus and is adapted for being operated by the supply of electric power either from the fuel cell or the AC bus.

Abstract: A handheld air sampler device for enrichment of airborne substances and/or particles, in particular microorganisms, includes: an inlet configured for air intake into a flow channel; an outlet configured for fluidic ally connecting the flow channel to an external vacuum device; a permeable backing element arranged in the flow channel, the backing element being configured to receive and support a filter element; and a sealing element configured for sealing a filter element received on the backing element such that, when a negative pressure is applied to the outlet, air entering the inlet forms an airstream passing the filter element and airborne substances and/or particles, in particular microorganisms, are enriched in the filter element. An air sampling arrangement includes a handheld air sampler device of this type.

Abstract: A combined system for imaging and communication by laser signals including a telescope (10) in which the primary (1) and secondary (2) mirrors are shared between an imaging function and a function involving the emission of laser transmission signals. The accuracy required for the direction of emission (DE) of the laser transmission signals is obtained by additionally placing a geolocation device on board a satellite carrying the combined system. No coarse pointing assembly is used and it is also possible for the system to be devoid of any fine pointing assembly and target acquisition and tracking detector.

Abstract: An aircraft having a warning device for generating a whistling sound has a fuselage and a warning device. The warning device has a sound-generating element which is designed to generate a whistling sound if the aircraft is in an uncontrolled dive in the direction of the surface of the earth and there is a flow of fluid against the sound-generating element. The warning device is at least partially arranged on the fuselage of the aircraft.

Abstract: A fluidic oscillator device, in particular for a or in a flow control system for an aircraft or spacecraft, has a first and a second fluidic actuator, wherein each of the actuators has an inlet for supplying pressure and a first and a second outlet, from which an actuator flow can be discharged. The device further has a fluidic control for controlling an oscillating discharge of the actuator flow from the first and second outlet of the actuators, wherein the control has a connection portion which is arranged between the first actuator and the second actuator.

Abstract: A cleaning assembly for leading edges of airfoils, in particular airfoil profiles of aircraft or spacecraft, has a cleaning device that is provided with at least one cleaning member and is intended for applying mechanical pressure to a planar region of an airfoil, and has a drive having at least one drive element, which drive moves the cleaning device along the surface to be cleaned. It is proposed to adhesively hold the cleaning device on the airfoil by the at least one cleaning member and/or for the at least one cleaning member to have a sticky surface and for the at least one cleaning member to be dimensionally stable and have flexible contours.

Abstract: Apparatus and methods are disclosed for obtaining a correlation function between a Direct Sequence Spread Spectrum (DSSS) signal and a spreading code. A plurality of code replica samples are stored in memory at a relatively low sampling rate compared to the sampling rate at which the input DSSS signal is sampled. A correlation operator is obtained by reproducing the stored code replica samples, in order to obtain a correlation operator with the same number of samples as the block of DSSS signal samples currently being processed. For example, when the sampling rate of the DSSS signal is equal to an integer N multiple of the sampling rate used for the code replica samples, the stored replica samples are reproduced N times to obtain the correlation operator. The correlation operator is then multiplied by the block of DSSS signal samples and integrated to obtain a correlation function.

Abstract: A system for producing and dispensing pressurized hydrogen includes: a hydrogen generator, in particular an electrolyser, a hydraulic drive, two or more hydrogen storage tanks, and a hydrogen dispensing unit, wherein each of the hydrogen storage tanks is capable of discharging hydrogen at a constant pressure by movement of an internal piston, wherein at least one of the hydrogen storage tanks is arranged to act as compressor by actuation of the internal piston by the hydraulic drive, and wherein at least one of the hydrogen storage tanks is arranged to act as a constant pressure tank for storing and discharging hydrogen at a constant pressure.

Abstract: An actuating apparatus for a polyphase motor includes five phase terminals for connecting of in each case one phase of the polyphase motor, a high terminal for applying a supply voltage (UB), a low terminal for applying a reference potential of the supply voltage (UB), a control device, wherein the control device is adapted, in four of the five phase terminals, to impress a pulse-width-modulated voltage pattern by connecting the phase terminals to the high terminal or the low terminal so that in the first phase terminal, an evaluation signal which is dependent on the angle of rotation of the polyphase motor is produced, and wherein the control device is adapted to determine the angle of rotation and/or a commutation condition of the polyphase motor from the evaluation signal.

Abstract: A method is provided for the nanostructuring and oxidation of a surface, which has an anodizable metal and/or an anodizable metal alloy, both being coated with an oxide layer, by way of a laser or particle radiation in an inert or reactive atmosphere and subsequent anodization. As a result, oxide nanostructures are formed on the entire surface, in titanium or titanium alloys in the form of nanotubes.

Abstract: A method to control operation of a robot includes generating at least one virtual image by an optical 3D measurement system and with respect to a 3D measurement coordinate system, the at least one virtual image capturing a surface region of a component. The method further includes converting a plurality of point coordinates of the virtual image into point coordinates with respect to a robot coordinate system by a transformation instruction and controlling a tool element of the robot using the point coordinates with respect to the robot coordinate system so as to implement the operation.

Abstract: Unmanned aerial vehicles (1), and methods of flying such, comprising at least four rotors (2) arranged such that the plane of rotation of each rotor (2) is co-planar with a face of a notional polyhedron, and wherein each face of the notional polyhedron is co-planar with the plane of rotation of at least one rotor (2). Such methods comprise: a first step of flying the vehicle (1) using a first rotor set (2a-c) to provide lift; and, a second step using a second rotor set (2d-f) to provide lift; wherein, the second rotor set (2d-f) includes at least one rotor (2) that is not used to provide lift in the first step or that operates so that airflow through the rotor (2) is in the opposite direction to that through the rotor (2) during the first step; and, wherein at least one of the first and second sets (2a-c, 2d-f) comprises a plurality of rotors (2).

Abstract: A motor actuating apparatus includes three phase connections for three motor phase connections, a high-connection for a supply voltage and a low-connection for a reference potential of the supply voltage, three bridge branches having a series connection of a high-switch and a low-switch and a control device for actuating the switches of the bridge branches. The high-switches are connected to the high-connection and the low-switches are connected to the low-connection. Each of the three phase connections is connected to exactly one of the three bridge branches between the high-switch and the low-switch. The control device is adapted for actuating the switches of the bridge branches such that during a first time period a first phase connection is switched to passive and the second phase connection and third phase connection are alternatingly connected to the high-connection and the low-connection in a predeterminable duty cycle if the supply voltage is applied.

Abstract: This disclosure relates to a wheel assembly (1) comprising a wheel, the wheel having a hub and a rim concentrically mounted to the hub, a plurality of deformable chambers (6) disposed outwardly of the rim, each chamber extending about a discreet portion of the wheel and containing a transition substance (15), and an actuator (14) configured to transform the transition substance (15) within each chamber (6) between a fluid state in which the deformable chamber (6) can deform into a conformal state as the wheel encounters an obstacle during use, and a rigid state in which the transition substance is rigidified to maintain the deformable chamber (6) in said conformal state to provide increased purchase on said obstacle.

Abstract: This disclosure relates to a wheel assembly (1) comprising a wheel, a deformable chamber (6) containing a transition substance (15) comprising jamming particles and an interstitial gas, and an actuator (14) configured to transform the transition substance (15) between a fluid state in which the deformable chamber (6) can deform into a conformal state as the wheel encounters an obstacle during use, and a rigid state by evacuation of the interstitial gas in which the transition substance is rigidified to maintain the deformable chamber (6) in said conformal state to provide increased purchase on said obstacle.

Abstract: A logging device configured to store log messages, includes a storage device having a plurality of log entry locations which can be ordered as a sequence, an encryption device configured to generate the encrypted log messages from log messages, an authentication code generator configured to generate an authentication code from the encrypted log message, a key evolving device, a state storage device configured to store state variables for use by the encryption device, the authentication code generator and/or the key evolving device. Furthermore, a verification device configured to verify log entries stored in log entry locations of the storage device is also described. A method for storing log entries in log entry locations of a storage device of a logging device as well as to a method for verifying the integrity of log entries stored in log entry locations of a storage device is also described.

Abstract: The present disclosure relates to an electronic high-frequency component for accommodating micro-devices, having at least two housing parts which are joined together by a metal frame and which enclose a cavity, and at least one input signal line configured to introduce electrical high-frequency signals from outside of the component into the cavity. The input signal line is connected to a signal line via. Furthermore, the high-frequency component also has at least one short-circuit via which electrically connects the metal frame to at least one of the housing parts of the component.

Abstract: A vehicle ramp assembly as disclosed includes a ramp for supporting one or more wheels of a vehicle and providing a bridge over stepped terrain on which the wheels of the vehicle can travel. The ramp can move among a first configuration where the ramp is stowed in the ramp assembly, a second configuration where the ramp extends from the ramp assembly, and a third configuration where the ramp is supports the vehicle wheels as it travels over stepped terrain. A drive mechanism for the ramp, and a carriage coupling the drive mechanism to the ramp enable rotation of the ramp. A secondary actuation system enables linear movement of the carriage along the ramp. A control module can drive the carriage around a curvilinear loop, such that the ramp is driven in a cycle from the first configuration to the second configuration to the third configuration to the first configuration.

Abstract: An actuator assembly is capable of manipulating a fluid flowing around a flow body, the fluid being received or able to be received in a volume of at least one cavity arranged in the flow body, and the fluid passing through at least one opening in the at least one cavity during manipulation of the fluid. In this process, the volume of the at least one cavity can be changed by moving a wall portion delimiting or defining the cavity. The actuator assembly has a drive unit with at least one actuator, which executes a periodic movement over time when actuated, causing a translational movement of the wall portion delimiting or defining the cavity and the wall portion being shaped in terms the topology thereof in such a way that it is adapted to the shape of the at least one cavity with the at least one opening thereof.

Abstract: An article comprises a carbon fibre reinforced plastic (CFRP) substrate, a buffer layer disposed adjacent the substrate, the buffer layer comprising a poly(para-xylylene) polymer; and a moisture barrier coating disposed adjacent the buffer layer.