Zodiac Aero Electric

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Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Safran Electrical & Power

Bonnefous, Edouard

Edouard Bonnefous

Olivier Deshayes

Julien Dauchy

Christian Tsao

Arnaud Badault

Lionel De Paoli

Frédéric Dratz

Frederic Dratz

Device for transforming and for rectifying polyphase, in particular three-phase, voltage comprising a polyphase transformer comprising a voided central zone, a voltage rectifier circuit that is connected to the transformer and a fan. The voltage rectifier circuit includes at least three heat dissipation units forming a right prism of regular polygonal section comprising a voided central zone, the transformer, the voltage rectifier circuit and the fan being positioned such that at least some of the airflow produced by the fan flows through the voided central zone of the rectifier so as to immerse the transformer.

Device for transforming and for rectifying polyphase voltage

An optical lighting system for an aircraft includes an optical unit that can be configured according to the phases of flight or taxiing of the aircraft in order to emit a beam of light the spread and aim characteristics of which are dependent on the said phases of flight or of taxiing.

Optical lighting system for an aircraft

An internal combustion heat engine, of which the architecture of one elementary 'cylinder' includesidentical mobile couplings distributed about the Z axis of the engine, consisting of a segmented 'piston' driven by the crank pin of a crankshaft and guided by a roller rolling in a slide. The crankshafts, which are parallel and synchronized by a gear mechanism, perform one revolution per cycle. Each piston includes a sliding surface that nearly touches the cylinder face of the adjacent piston, but on which the segmentation slides in sealed contact. The concave shape of the 4 overlapping faces encloses a chamber volume that changes cyclically: at a minimum, having a quasi-spherical shape during combustion, reducing the heat losses at the walls, and at a maximum, uncovering the ports allowing intake and exhaust via transfer units and manifolds with the possibility of more economical Miller/Atkinson distribution, via rotary plates.

Two-stroke internal combustion engine with a spherical chamber

A battery unit comprises a plurality of accumulators distributed in rows, a support arranged along a row of accumulators of the plurality of accumulators, conductive strips attached to the accumulators of the row and extending over the support, a guide, the support being suitable for sliding into the guide, a metal strip extending in the guide, deformable electrical connectors fixed to the metal strip and designed to come into contact with the conductive strips when the support is fully inserted in the guide, and metal portions distributed along the metal strip, in contact with the metal strip.

Connection device for a battery

The invention relates to a control circuit () for an electric motor, in particular for driving a windshield wiper, including a control means () comprising an output for controlling the electric motor, the control means being capable of varying the angle of the motor between a given minimum value and maximum value. In particular, the control means () comprises an input for receiving a speed set point and is capable of controlling the angular speed of the motor according to the speed set point, the control circuit likewise including a set point means () comprising an input for receiving values of the angle of the motor and an output for providing a speed set point to the control means, the set point means () being capable of determining the speed set point from a continuous function of the motor angle. The invention likewise relates to a driving mechanism () for producing an alternating rotary motion comprising a circuit () such as described previously and an electric drive motor (), as well as to a windshield wiper device (I) including at least one driving mechanism () such as described previously and an windshield wiper arm () driven by the driving mechanism.

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Saint Mande, France

Edouard Bonnefous