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Exxelia équipe le satellite turc IMECE avec des condensateurs tantale et céramique

Conçu et développé par l'Institut de recherche sur les technologies spatiales TÜBİTAK (TÜBİTAK UZAY) en Turquie

IMECE SatelliteIMECE est un satellite d'observation de la Terre avec une masse impressionnante de 800 kg, qui évoluera en orbite géocentrique synchrone avec le soleil à une altitude de 680 km. Ce satellite est conçu pour une mission d'une durée de cinq ans et offre une résolution d'image impressionnante de 0,99 mètre en mode panchromatique (PAN). Cette résolution permettra d'obtenir des images détaillées de la Terre, ouvrant ainsi de nouvelles opportunités pour la surveillance de l'environnement, l'agriculture, la cartographie, et bien plus encore.



Exxelia équipe le satellite avec les condensateurs de la série PM qui sont utilisés dans l'unité de distribution de puissance (PDU) du satellite. Les condensateurs de la série PM d'Exxelia sont réputés pour leur fiabilité, leur performance et leur durabilité, ce qui les rend idéaux pour les applications spatiales. Exxelia fournit également des condensateurs tantale et des condensateurs céramique pour les charges utiles de l'IMECE Satellite. Ces composants sont conçus pour résister aux conditions extrêmes de l'espace et garantir le bon fonctionnement des instruments scientifiques et des équipements à bord du satellite.

 

Nous attendons avec impatience les découvertes et les données que l'IMECE Satellite nous apportera au cours de sa mission de cinq ans. L'avenir de l'exploration spatiale s'annonce prometteur, et Exxelia continuera à jouer un rôle actif dans cette aventure passionnante.

Publié le 31 Aug 2023 par Stephane PERES

Nouvelle gamme de vis hyperfréquence autofreinées en Invar

  Working frequencies in Space applications are shifting to Ka, Ku or even Q band, while cavity filters are undergoing the general trend towards miniaturization: this context calls for a much more precise and stable tuning element now offered by Exxelia Temex, daughter company of Exxelia, through their last innovative and unrivalled solution to incorporate a self-locking system into their Invar Tuning Elements. Invar-36 is a unique Iron-Nickel alloy (64 % Fe / 36 % Ni) sought-after for its very low coefficient of thermal expansion. With 1.1 ppm. K–1 between 0°C and 100°C, Invar-36 is about 17 times more stable than Brass which is the most traditional and common alloy Tuning Elements are made of. The working temperature range in Space is so wide that this property becomes essential for a reliable and stable cavity filter tuning. Self-locking system is a technology commonly used on Tuning Element made of Brass or other soft “easy-to-machine” alloys but is innovative and pretty advanced when applied to hard and tough Invar 36. The design consists of two threaded segments separated by two parallel slots. After cutting both parallel slots, the rotor is compressed in its length in order to create a plastic deformation. Thus, an offset is induced between the two threaded segments which generates a constant tensile stress in the rotor from the moment threaded segments are screwed.

Exxelia à Railtex 2017

Felsic HV, long lifetime and high voltage screw terminal aluminum electrolytic capacitor The Felsic HV family of aluminum electrolytic screw terminal capacitors provides great performances in energy density and ultra-long lifetime. For instance, 6 800µF @450V fit into a  volume of Ø77 x 220mm  and can withstand 200,000h between 0 to 70° under 37Amps, which makes them the perfect choice for use in rolling stock traction systems or the CVS. The family also has one of the lowest ESR for aluminum capacitors with less than 10m0hms in most cases. Products are available for voltages from 160 to 450 Vdc, and offer capacitance values from 1500μF up to 47 000μF offering the best compromise between reliability and compacity.     Snapsic HV, high voltage snap aluminum electrolytic capacitor Because it covers voltages from 16 to 500Vdc and temperatures up to +105°C, and because it is customizable, the Snapsic HV series is very versatile and can cover all needs of energy storage in medium voltage both in rolling stock equipment or signaling systems. Thanks to its high ripple current, it is often used in SMPS and HVAC rolling stocks units with a typical variation of 470µF @450V in Ø35 x 50mm, as well as in various signaling control units, where a smaller package can be used with for example 1 000µF @250V in Ø35 x 40mm.   Prorelsic, the long lifetime axial aluminum electrolytic capacitors for signaling equipment Exxelia’s range of aluminum electrolytic solutions would not be complete without the axial leaded Prorelsic series. These capacitors show high ripple current and extra-long life-time with 20 000h @105°C. The most common sizes are Ø8.5 x 19mm, Ø10 x 19mm and Ø12 x 30mm, with typical values of 47µF @40V, 100µF @25V and 47µF @100V respectively. Prorelsic capacitors are perfectly suited for smoothing, coupling/decoupling and energy storage functions in railway signaling equipment.
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