Labinal Power Systems

Safran Aircraft Engines

Safran Electrical & Power

Tony Lhommeau

Alméric Pierre Louis Garnier

Cédric Balpe

Lorris Michel Cognot

Stephane Sorel

Alexandre Jean Joseph Salvi

Cedric Balpe

Thierry Raymond Poix

Philippe Poret

Stéphane Sorel

A method for detecting damage to one or more mobile blades of an impeller of an aircraft engine, includes measuring the speed of the engine, and for each blade acquiring, by a plurality of sensors, measurements of blade-tip passage times; calculating for each sensor, a deflection of the blade tip; extracting a dynamic component of deflection for each of the calculated deflections; detecting the number of functioning sensors; selecting the dynamic components to be processed based on the detecting step; determining, for at least one blade, a variation of the dynamic behavior of the blade for each functioning sensor; and, for each blade for which a variation of the dynamic behavior has been determined, identification of potential damage to the blade.

Method and system for detecting damage to the mobile blades of an aircraft

A control device for connecting between two portions of an electrical power supply line. The device includes a bipolar transistor including a wide bandgap semiconductor material and having its emitter connected to one portion of the power supply line, its collector connected to another portion of the power supply line, and the device also including control connected to the base of the transistor.

Control device for power supply line

The invention relates to a method of measuring the temperature of a coiled component comprising the injection of a known DC current into a gauge wire () made of resistive material, the resistance of the gauge wire varying with temperature according to a known law, the measurement of potential difference between the terminals () of said gauge wire, and a step of calculation transforming the potential difference into a mean temperature of the gauge wire, said gauge wire () being wound inside the coil, and arranged as a series of 'outbound' turns () and a series of 'inbound' turns () associated pairwise with a geometry and a position that are substantially equal. It also relates to a component made in order to be able to implement this method and the measurement device as a whole.

Measurement of the homogeneous temperature of a coil by increasing the resistance of a wire

An electrical circuit including at least one electrical component, such as a power component, and an electrical flex circuit, and at least one electrical conductor part connecting the electrical component to the flex circuit, the electrical conductor part including at least a first contact portion configured to receive in contact a contact element of the electrical power component and a second contact portion configured to receive in contact a conductive layer of the electrical flex circuit, the extent of the width of the second contact portion corresponding to the width of the flex circuit, and the extent of the length of same being adjusted to provide a contact surface that one of transmitting a density of electrical current of between 4.5 and 5.5 A/mmand allowing the electrical circuit to support a current specific to the power component, i.e. between 30 and 80 A.

Electrical circuit for the interconnection of an electrical component, such as a power component

A printed circuit includes a substrate onto which at least one ceramic component is attached so as to enable the heat produced by the ceramic component to be discharged and to prevent cracks in the ceramic component and in the substrate. To this end, the ceramic component is attached onto the substrate using two connectors made of metal matrix composite material. The two connectors further have incisions so as to enable the mechanical stresses exerted in the substrate to be carried over into the connectors.

Growing community of inventors

Lieusaint, France

Tony Lhommeau