Safran Electronics & Defense

Safran

Sagem Defense Securite

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Compagnie Generale Des Etablissements Michelin

Safran Landing Systems

Jean-Christophe Riou

Eric Bailly

Nawres Sridi-Convers

Agustin Palacios Laloy

Guillaume Lehee

Toni Youssef

Thanh Long Le

Stéphane Joseph Azzopardi

Thomas Geoffroy

Michel Peyrard

Nawres Sridi-convers

The invention relates to a device () for transferring heat from a thermally conductive plate () capable of capturing the heat from a zone placed on a first side () of the plate, the device comprising at least one fin () placed on a second side () of the plate () opposite the first side () and having a duct () extending in a longitudinal direction (L) between a first end () connected to the plate and a second end () opposite the first end and which opens out, the duct () being connected to at least one Venturi-effect neck () bringing cooling air into the duct, the neck () being formed in the vicinity of the first end of the duct and the plate ().

Venturi-effect heat-transfer device

A device for measuring the mass flow rate, including a flow pipe; a first set of actuators which are arranged in a first plane including a first transverse cross section of the pipe and perpendicular to the fluid flow path, these being configured to move selectively in the first plane; a control circuit configured to control a movement of the first and second actuators so that the cross-sectional area for flow through the pipe in the first plane remains constant; a measurement sensor measuring a force or a stress in a direction perpendicular to the flow path, in the vicinity of the actuators of the first set along the flow path; a computation device configured to calculate the mass flow rate passing through the flow pipe as a function of the force or stress measured by the sensor.

Mass flow rate measurement device

An electrical power module comprising power components and supports, each including at least one metal portion, the metal portions of the supports forming a substrate of the electrical power module, at least one support comprising two angled metal portions that are angled relative to each other at an angle that is greater than 0&#xb0;, each power component being fastened to two metal portions of two distinct supports by being positioned between said two metal portions, the electrical power module being arranged in such a manner that electrical power currents going to or coming from the power components flow in the metal portions of the supports.

Electrical power module

A device having both an electronic assembly having an electronic component assembled on a first substrate, and also a body defining a cavity having a first end in fluid flow communication with a fluid, the electronic component extending inside the cavity and the first substrate including a portion in contact with a wall of the cavity. The coefficient of thermal expansion of the material of the first substrate is less than that of the electronic component, and the electronic component is assembled on the first substrate by a brazing type assembly method involving the application of heat. A method of making an electronic assembly. An assembly obtained by the method.

Electronic assembly and pressure measurement device with improved durability

A pressure measurement device () comprising a housing () extending around an electronic card () provided with a pressure sensor ();

Encased pressure sensor for measuring pressure in an aircraft wheel

An assembly method for assembling a first element to a second element by pressureless metal sintering, the method having a preparation step during which a sintering material is arranged at a bond interface of the elements, a pre-sintering step during which the assembly is heated for a first duration that is longer than five minutes at a first temperature that is higher than 200&#xb0; C. and strictly lower than or equal to the temperature for activating diffusion at the grain boundaries, and a densification step during which the assembly is heated for a second duration at a second temperature that is higher than or equal to the temperature for activating diffusion at the grain boundaries.

Assembly method by silver sintering without pressure

A pressure measurement device comprising a pressure sensor of a first type and a pressure sensor of a second type different from the first, which sensors are mounted on a common support in order to be subjected to the same pressure, in which the pressure sensor of the first type is of the capacitive type, the device being characterized in that the pressure sensor of the first type comprises at least one membrane and a first internal channel passing through the common support, a second internal channel bringing a fluid to the membrane being in fluid flow connection with the first internal channel. A calibration method associated with the device.

Pressure-measuring device with improved reliability and associated calibration method

An electronic system including at least one component, two identical packages including a bottom from which a peripheral rim protrudes defining a recess, and electrical conductors passing through each package, the packages being attached to one another by the rim thereof so as to define a sealed cavity therebetween. An electronic device including two systems of this type superimposed on one another.

Compact electronic system and device comprising such a system

A pressure detection device including a mount whereon a pressure sensor is attached which comprises a membrane which has a surface intended to be subjected to a pressurized fluid and which is so arranged as to elastically deform according to pressure, and means for determining the deformation of the membrane along an axis normal to a mid-plane of the membrane in the rest state. The membrane is supported by a frame connected to the mount by a mechanical decoupling structure in order to isolate the membrane from stress resulting from a differential thermal expansion between the frame and the mount, with the membrane and the frame being made of the same material.

Device for detecting mechanical decoupling pressure

A pressure measuring device comprising a bracket supporting a pressure sensor which defines a first sealed enclosure with a first face of the bracket, with the pressure measuring device comprising a substrate having opposite faces, opposite which a first deformable membrane and a second deformable membrane respectively extend, with the first membrane and the second membrane respectively defining with the substrate a second sealed enclosure and a third sealed membrane, with the pressure sensor comprising a cover in order to define a fourth sealed enclosure connected through a second channel to the first enclosure, with the pressure sensor comprising means for measuring the deformation of the first and the second deformable membranes.

Footed pressure measuring device

A lightning protection component, with at least one main input capable of transmitting a lightning signal, at least one main output designed to be connected to a piece of equipment (T) to be protected from the lightning signal, a branched output designed to be connected to a dissipation circuit (M), a direct line connecting the main input to the main output, a bypass circuit that is mounted between the direct line and the branched output, and that is provided with at least one bypass switch having an open state in which the branched output is isolated from the direct line and a closed state in which the lightning signal is conducted from the direct line to the branched output.

Lightning protection component

A pressure sensor made of semiconductor material, the sensor comprising a box defining a housing under a secondary vacuum, at least one resonator received in the housing and suspended by flexible beams from at least one elastically deformable diaphragm closing the housing that also contains means for exciting the resonator in order to set the resonator into vibration and detector means for detecting a vibration frequency of the resonator. The detector means comprise at least a first suspended piezoresistive strain gauge having one end secured to one of the beams and one end secured to the diaphragm. The resonator and the first strain gauge are arranged to form zones of doping that are substantially identical in kind and in concentration.

Pressure sensor made from nanogauges coupled to a resonator

An electronic device comprising at least one electronic component mounted on a support and surrounded by a deformable casing containing a heat-conducting and electrically-insulating liquid, the device comprising a heat dissipation plate that is substantially parallel to the support and spaced apart therefrom, and heat exchange means for heat exchange by conduction between the casing and the plate, the heat-conducting and electrically-insulating liquid being selected and the casing being arranged so that thermal expansion of the oil leads to the casing applying force against the means for heat exchange by conduction.

Electronic power device with improved cooling

An electronics module for use at high temperature (up to 225&#xb0; C.) in onboard aviation equipment, the module having a thick layer hybrid circuit covered in a sealing coating of poly-p-xylylene.

Growing community of inventors

Boulogne Billancourt, France

Jean-Christophe Riou