Thales

Philippe Guichard

Philippe Rondeau

Jean-Pierre Schlotterbeck

Henri Leblond

Jean-Philippe Pineau

Régis Quer

Jérôme Inglese

Pierre-Olivier Lefort

Frédéric Sahliger

Jean-Claude Bourland

Jean-Marie Odermath

Jean-Louis Le Corre

The present invention relates to a method for self-testing an angle-of-attack probe comprising the steps of controlling an angular excitation of a rotary element that is rotatable about its equilibrium position according to known excitation characteristics; acquiring angular measurements relating to the rotation of the rotary element, determining a parasitic torque applied to the rotary element on the basis of the angular measurements and of the excitation characteristics; comparing at least one component of the parasitic torque with at least one predetermined threshold and detecting an operating fault in the probe when said component exceeds the predetermined threshold.

Method for self-testing an angle-of-attack probe and method for checking the velocity of an airflow provided by a series of associated pitot probes and angle-of-attack probe

A device is provided for checking a flow pressure measurement probe as well as a probe comprising the device. The probe includes an internal volume and at least one orifice for communication with the outside of the volume. The device includes: an acoustic transmitter and an acoustic receiver that are intended to be connected to the internal volume so that the transmitter transmits an acoustic signal that propagates in the internal volume and so that the receiver picks up an observed acoustic signal; and, means for comparing the observed signal with a reference signal. The device may be a stand-alone device or may be integrated into the probe.

Device for checking a flow pressure measurement probe, and probe comprising the device

A device for characterizing the nature of an aerodynamic stream along a wall, the device including multiple temperature-sensitive optical nodes of Bragg grating type distributed along an optical fiber. The device determining the variations in speed of the aerodynamic stream. The nodes are distributed along a fiber placed substantially following the route of a streamline, and the device processing so as to differentiate the temporal and spatial characteristics of the signals of thermal flowrate among the nodes.

Device for determining an aerodynamic flow along a wall and controlling a profile of the wall

A monitoring device for monitoring a plurality of microactuators includes an optical fiber with a plurality of sensors, each sensor being placed close to a microactuator and having optical properties varying as a function of at least one environmental parameter, the monitoring device also including a polling device with at least one transmitter/receiver for a fiber optic network, and processing means capable of modulating the frequency of the optical signal transmitted by the transmitter to select the sensor close to a given microactuator, and of comparing the received optical signal with a template characteristic of the correct operation of the microactuator, and of generating a resultant signal, representative of the correct operation of the monitored microactuator. The invention has applications in the field of health monitoring of vehicles, notably of aircraft.

Device for monitoring the correct operation of a plurality of devices, notably actuators

The subject of the invention is a device for managing configuration and for managing maintenance of apparatus. It relates to a device for managing configuration and maintenance of a number N of items of apparatus EQintegrated into a system, i denoting an identification index for the apparatus EQand lying between 2 and N. The system includes a main computer RC. The apparatus EQexchanges data with the main computer RC through a communication network. The apparatus EQbeing able to be integrated into the system or to be removed from the system. According to the invention, the device includes at least one data concentrator C, N radio tags ET, each tag ETis fixed securely to the apparatus EQi, a number M of communication nodes Nj, where j denotes an identification index for the communication node Nj, j lies between 2 and M, M is less than or equal to N. According to the invention, a communication node Nhas a fixed position related to the system () and the node Nis devised so as to exchange data with radio tags ETthrough a contactless link, all the nodes Nare linked to a data concentrator C by a wired link.

Device and method for managing configuration and for managing maintenance of apparatus

The invention relates to a method of correcting the effects of aging of a measurement sensor upon turning on the sensor. It also relates to a device delivering measurements corrected for the effects of aging of the device. According to the invention, the method of correcting the effects of aging of a sensor starts by on turning on the processing unit. The absolute time information is transmitted from a satellite positioning receiver to a processing unit. The age of the sensor is determined by comparison of the date of manufacture of the sensor and the absolute time information. Corrections to be made to a sensor measurement, based on the age of the sensor and on the degradation law, are determined. The corrections are applied to the sensor measurement.

Device and method for correcting the aging effects of a measurement sensor

The invention relates to electronic sensors comprising an electromechanical microsensor cell such as a micro-accelerometer, and it more particularly relates to the way in which the microsensor cell per se is mounted in a package that furthermore comprises a printed circuit board carrying the electronic processing circuits associated with the microsensor cell. In order to establish a non-rigid electrical connection between a conductive terminal of the board and a connection pin of the cell, a narrow strip-shaped conductive connection cut by chemical machining from a thin and flexible metal sheet (CuBe) is soldered. The strip comprises at least one circle-arc segment extending over one half-turn or three-fourths of a turn. Its resilience permits very low stiffness in all directions and therefore prevents any transmission of vibrations or shocks to the cell. The manufacture of the connections may be collective for all the connections of a sensor and for successive sensors manufactured serially. Application to accelerometers subjected to large shock and vibration stresses.

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Chabeuil, France

Philippe Guichard