Abstract: Device for transmitting movement to a toothed element forming an input of a position sensor, the transmission device including an output shaft, a first toothed sector rotatably linked to the output shaft and a second toothed sector mounted coaxially to the first toothed sector in order to have an angular displacement relative to the first toothed sector, a return member mounted between the toothed sectors returning the second toothed sector into a predetermined position, characterised in that the return member is arranged such as to magnetically generate a force tending to move the second toothed sector into the predetermined position.

Abstract: A connection device for connecting a first piece of electronic equipment to a second piece of electronic equipment, the device comprising two Ethernet type interfaces that are linked together by an up line and a down line and that are arranged for each of them to be linked to a respective one of the pieces of equipment and to transmit data in differential mode, two power supply modules, each associated with a respective one of the pieces of equipment and wired in common mode between the up and down lines in order to transmit a power supply carrier signal in alternating current, and two secondary transmission modules, each associated with a respective one of the power supply modules and arranged to enable data to be transmitted by modulating the power supply carrier signal.

Abstract: A method of managing execution of tasks by at least one processor unit of a computer system is provided, the processor unit operating in computation periods, and the method including the steps of associating time-related execution characteristics with each task, the time-related execution characteristics including a flag indicating the possibility of determining, a priori, a theoretical time for the end of the task in a nominal execution mode, and a flag indicating the possibility of an extended execution mode whereby execution can continue beyond the theoretical end-of-execution time. When a task is being executed at the theoretical end-of-execution time, an execution continuation algorithm is launched in the presence of the flag indicating the possibility of extended mode, or an error processing algorithm is launched in the absence of such a flag.

Abstract: An inertial navigation system using loose coupling hybridization of inertial measurements by utilizing measurements supplied by a satellite-positioning receiver which utilizes signals sent by a plurality of satellites distributed across at least two separate satellite subsets and calculates at least two navigation solutions, each navigation solution being calculated by means of signals sent by the satellites of one of the subsets. The inertial navigation system includes a hybridization module using each of the at least two calculated navigation solutions. A satellite failure detector is configured to compare the hybrid navigation solutions and where applicable detect incoherence between said hybrid navigation solutions. The hybridization module is configured to stop execution of hybridization following detection of incoherence between the hybrid navigation solutions when the origin of the incoherence cannot be determined.

Abstract: A gear device, wherein it comprises at least: a shaft provided with a sun gear; at least two coaxial rings with internal teeth, namely at least one first ring and at least one second ring having at least one first annular segment and at least one second annular segment; and planets engaging with the sun gear, the first ring, and the segments of the second ring, which segments mesh with a particular toothed relationship.

Abstract: The invention concerns an actuating device (1) for moving a mobile cover of a thrust reverser, comprising: an actuator (5) comprising a first element (10), such as a screw, and a second element (12), such as a nut, mounted mobile device relative to the first element (10) such that the rotation of the first element (10) results in a translational movement of the second element (12) relative to the first element (10), and a locking device (31) comprising a rotating part (34) linked in rotation with the first element (10), and a locking part (35) that is mobile relative to the rotating part (34) between a locked position in which the locking part (35) is engaged with the rotating part (34) to prevent the first element (10) from rotating and an unlocked position in which the locking part (35) is disengaged from the rotating part to allow the rotation of the first element (10), and an electromagnet (39) for moving the locking part (35) to the unlocked position.

Abstract: The invention concerns a bandwidth control method in an on-chip system comprising at least one main master module, at least one secondary master module, at least one slave module and a bus connected to each module on a communication link, the bus comprising interconnection means to make at least one common slave module communicate with at least one main master module and with at least one secondary master module via at least one common path portion, the method comprising the following steps carried out for each common slave module: first detection of a first request to access the common slave module, issued by a main master module, definition of a blocking time Dj associated with the common slave module, blocking, during blocking time Dj, of any data transfer on the at least one common path portion between a secondary master module and the common slave module.

Abstract: The invention relates to a method of analyzing flight data recorded during N flights of at least one aircraft, by means of a flight data recorder of an aircraft, the data being grouped together by flight i in a signature vector of the flight Xi of size d, the components of which correspond to data recorded during said flight i of the aircraft, a flight i being thus defined by the signature vector Xi, the method comprising the following steps: Gaussian kernel entropy component analysis of the flight signatures Xi to obtain a zone of normal flights and classifying the flight signatures Xi with respect to their distance to said zone; determining, for each flight i, an abnormality score zi defined by the distance of a flight signature Xi with respect to the zone of normal flights; detecting, as a function of the abnormality score zi, at least one abnormal flight.

Abstract: The invention relates to an actuation device (1) for moving the movable cowling of a thrust reverser, comprising: an actuator (7) with a first member (12) such as a screw, and a second member (14) such as a nut, wherein the first and second members are capable of engaging such that the rotation of the first member results in a translation of the second member, a locking device (33) including a locking part (34) movable between a locked position for preventing to the rotation of the first member and an unlocked position for enabling the rotation of the first member, and a lock inhibiting device (42) comprising a recess (46) and a ball (47) movable in the recess between a stowed position, in which the ball enables the movement of the locking part, and an inhibition position in which the ball prevents the locking part from returning into the locked position.

Abstract: Flow valve including a casing containing an electromagnetic assembly for detecting a magnetic field. The electromagnetic assembly is fixed to a pendulum suspended by an articulation from a plate of the casing. The casing contains a liquid for damping the movements of the pendulum. The pendulum includes a surface opposite the articulation which has a spherical cap shape and which extends facing a wall of the casing of complementary shape, defining a space having dimensions suitable for producing a laminar rolling of the damping liquid between them when the pendulum is in motion.

Abstract: A method of calibrating an inertial unit is provided. During a first static stage, in which the inertial unit is in a first orientation, measurements are taken by means of the accelerometers and the inertial rotation sensors. During a dynamic stage, the orientation of the inertial unit is changed, at least in part in azimuth, from the first orientation towards a second orientation, while taking measurements by means of the inertial rotation sensors. During a second static stage, in which the inertial unit is in the second position, measurements are taken by means of the accelerometers and of the inertial rotation sensors. For each static stage, a direction, an amplitude, and a mean speed of rotation for apparent gravity in an inertial frame of reference is estimated, variation is calculated in orientation between the static stages, and the accelerometer biases is deduced therefrom.

Abstract: The invention concerns an electric circuit designed to control a power supply of a piece of electrical equipment, the electric circuit comprising a piece of electrical equipment and a source of supply voltage, and further having, as inputs, at least two discrete electrical signals of which the values condition the cutting off of the power supply to the piece of equipment, the circuit being characterized in that it further comprises:—a module for the redundant comparison of the discrete electric signals, comprising two branches for comparing said signals, parallel to one other, each branch being designed to supply, at the output, a control signal representative of each of the comparisons of said discrete electrical signals, and—a first module for cutting off the power supply to the piece of electrical equipment comprising two switches in series, each one being controlled respectively by one of the two control signals.

Abstract: The invention relates to an actuation device (1) for moving a movable cover of a thrust reverser. Said actuation device includes: —an actuator including a first element (4), such as a screw, and a second element (5), such as a nut, that engages with the first element such that rotation of the first element causes translation of the second element; —a locking portion (31) rotatable between a locked position, wherein the locking portion prevents the first element (4) from rotating, and an unlocked position, wherein the locking portion (31) allows the first element (4) to rotate; and —an inhibiting part (45) that is translatable between a first position, wherein the inhibiting part (45) allows the locking portion (31) to rotate, and a second position, wherein the inhibiting part (45) prevents the locking portion (31) from rotating into the locked position.

Abstract: The inventive method for viewing of a multi-spectral image by an operator uses contrast optimisation by Fisher projection. The Fisher projection is determined and applied within a window (F1, F2, F3, . . . ) that is smaller than a display screen matrix (1) used by the operator. The window is moved for successive updates of a depiction of the image that is displayed, while creating a remanence of the positions of the earlier windows and elements that were exposed in some of said earlier windows. The implementation of the method is particularly simple and intuitive for the operator, so as to improve the reliability and effectiveness of his or her monitoring.

Abstract: The methods for managing access to a communication medium shared by a plurality of radio communication devices. The method of accessing a radio communication medium shared between a plurality of communication terminals. The method is based on a variant of the CSMA/CD access protocol. The method is based on monitoring of the medium and the emission of a token to request permission to emit. The terminals that receive this token then emit an acknowledgement intended to signal that the medium can be used, or a collision message if they receive a plurality of tokens simultaneously. In the latter case, the emitter retries its attempt to use the medium later on.

Abstract: The invention concerns a method for detecting a failure in a three-phase alternator connected to a three-phase rectifier bridge. The method comprises the following steps:—rectifying (70) the voltages generated by the three-phase alternator;—adding (76) the rectified voltages taken at the first and second phases in order to obtain a voltage sum;—subtracting (78), from said voltage sum, twice the rectified voltage taken at the third phase, in order to obtain a voltage difference;—comparing (80) the voltage difference to a high threshold and a low threshold;—detecting (82) a failure when the voltage difference is less than said low threshold or when the voltage difference is greater than said mot threshold. The invention also concerns a device for detecting failures and an associated computer programme.

Abstract: The invention relates to an actuating device (1) for moving a mobile cap of a thrust reverser, comprising: —an actuator comprising a first element (3), such as a screw, and a second element (4), such as a nut, collaborating with the first element in such a way that turning the first element causes the second element to move in a translational movement, —a locking piece (18) rotationally mobile between a locked position in which the locking piece prevents the first element (3) from turning, and an unlocked position in which the locking piece (18) allows the first element (3) to turn, and —an unlocking piece (25) rotationally mobile between an active position in which the unlocking piece (25) urges the locking piece (18) towards the unlocked position and a passive position in which the unlocking piece (25) allows the locking piece (18) to return to the locked position.

Abstract: A device for controlling the power of an engine and of a thrust reverser device. The invention includes a frame on which a primary cam track is formed, a thrust lever hinged to the frame, a thrust reverser lever hinged to the thrust lever, a bearing face arranged on the thrust reverser lever, a locking lever hinged to the thrust lever and comprising a first end and a second end. When the thrust lever has been pivoted by a predefined angle relative to the idle position of same, actuation of the thrust reverser lever is blocked, both by the second end of the locking lever pressing against the bearing face of the thrust reverser lever, and by the first end of the locking lever pressing against the primary cam track.

Abstract: Assembly for the electronic processing of data, comprising a central module and peripheral modules linked to the central module by electrical power supply and data links, the modules comprising: a processing unit, a memory, an input/output unit and an isolation of the power and data links; the central module furthermore comprising an electrical power supply unit for the peripheral modules, a common startup unit shared by the modules, and a star communication interface with the peripheral modules; each peripheral module furthermore comprising a serial link interface to the communication interface of the central module.

Abstract: The invention provides a motor-driven movement system for moving a movable element, the system comprising at least two actuators, each provided with means connecting it to the movable element and each dimensioned to be capable, on its own, of driving the movable element, a central control unit being connected to the two actuators in order to be capable of sending a position setpoint (Pos1, Pos2) to one or other of the actuators. According to the invention, the system further comprises control means for simultaneously controlling both actuators in terms of force in response to the position setpoint sent to one of the actuators. The invention also provides a method of driving such a system and a method of testing such a system.