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X-59 QueSST de la NASA : Exxelia est à bord

Ces dernières semaines, la NASA a beaucoup communiqué sur son programme d’avion expérimental X-59 QueSST, dont le démonstrateur arrive en fin d’assemblage chez l’avionneur Lockheed-Martin. Maillon essentiel du projet Low Boom Flight Demonstration (LBFD), le X-59 entamera ses campagnes d’essais.

Si le programme tient ses promesses, il pourrait permettre l’émergence d’avions de transport supersoniques capables de voler au-dessus des terres, sans les limitations imposées au Concorde en son temps.

Pour ce projet, Exxelia produit principalement des bobines en provenance de nos sites USA. Nos composants sont à destination du moteur de l’avion.

 

 

Avec son nez allongé, ses ailes “bossues” et ses petites surfaces portantes dispersées, le X-59 ne ressemble à aucun autre avion.
Une configuration exceptionnelle pour des capacités exceptionnelles. Crédits: NASA

 

 

Il volera à une vitesse de 1,5 Mach (1,5 fois la vitesse du son), soit plus de 1 800 kilomètres par heure. La NASA espère que son appareil pourra, à terme, être utilisé dans le domaine de l’aviation civile.

 

Si les essais sont concluants, le X-59 QueSST pourrait donc avoir deux effets révolutionnaires sur le paysage aéronautique américain, voire mondial :

  • L’avion d’essai pourrait servir d’inspiration à de futurs avions de transport produits en série, qu’il s’agisse d’avions de ligne ou d’avions d’affaire.
  • L’ensemble du projet LBFD pourrait permettre une évolution de la réglementation aérienne actuelle. Plutôt que d’interdire tous les vols supersoniques civils au-dessus des USA, comme c’est le cas aujourd’hui, la NASA propose d’instaurer une réglementation en fonction du niveau de bruit.

 

Source : Lockheed Martin, NASA

Published on 26 Jan 2022 by Stephane PERES

Exxelia Ohmcraft Custom Resistors Enable Metabolic Analyses of Live Cell Cultures in Pharmaceutical Research

To do so, they must rely on life science research and diagnostic instruments with complex high gain amplifier circuits. Leading manufacturers of this type of equipment have partnered with Exxelia Ohmcraft to design custom, high-resistance surface mount resistors that are essential to the function of these circuits. Specifically, oxygen consumption rate (OCR) and extracellular acidification rate (ECAR) are two key indicators of mitochondrial respiration and glycolysis that provide a systems-level view of cellular metabolic function in cultured cells. The analyzer equipment conducts these measurements automatically. “The accuracy and reliability of these tools are crucial to the researchers’ ability to make progress in their studies, which have the potential to change—and save—lives,” said Eric Van Wormer, Vice President of Exxelia Ohmcraft. “To meet the design needs of this particular application, we developed a custom resistor solution with a unique form factor and used special terminations to facilitate the manufacturability of the end product.” Exxelia Ohmcraft’s technology utilizes the proprietary Micropen electronic printing system to “print” precise, narrow, serpentine lines with resistive ink on a ceramic substrate, producing higher performance resistors over a wider range of values on a smaller surface area than is possible with conventional film resistor technology.

2023 Revolutionary Exxelia MML™ Ultra-High Energy Density Film Capacitors

Discover the power of MML™ technology The best performing film capacitors on the market with the highest energy density ever! Exxelia&#39;s revolutionary MML™ ultra-high energy density Film Capacitors are a game changer in the industry due to their unparalleled energy density of 400 J/dm3. This allows for a significant reduction in size and weight in comparison to traditional Polypropylene or Polyester dielectrics, as well as an increased operating temperature of up to 140°C and protection against transient voltage. Not only do MML™ capacitors offer a large flexibility in design, allowing for low profile configurations, but they have also been tested in actual cases for controls and DC-Links functions in aircraft applications and have shown a reduction in size and weight of about 50% compared to other film technologies.   Furthermore, when compared to MLCCs, MML™ capacitors have demonstrated a reduction in weight of between 70% to 90%, with no capacitance derating with voltage applied and a low drift of less than 5% across the temperature range. Applications that previously required clusters of stacked MLCCs can now be replaced by a single MML™ unit of similar size, with the added reliability that film dielectric offers. The exceptional properties of Exxelia&#39;s new MML™ capacitors make them suitable for a wide range of applications including power supplies, DC-links, AC/DC/AC power converters, charge/discharge or power generation functions of commercial/military aircraft, satellite platforms and payloads, launchers, defibrillators, downhole tools and any other applications that require confined electronics. Samples are available upon request.     Features & Benefits : Miniaturization of the function : Up to 50% size reduction vs other film technologies ; matching footprint with stacked MLCC Lightweight : 50% lighter vs other film technologies ; 80 to 90% lighter than ceramic No capacitance derating in voltage, stable in temperature (<5% drift through the temperature range) Capacitance from 1μF to 1000μF  Voltages from 50V to 1000V  Operating Temperature -55 °C to +140 °C Highly customizable   Get your white paper around our MML Film Capacitor Download our white paper now on our innovative Miniature Micro-Layer™ (MML™) technology, which offers the highest capacitance per volume for film capacitors available on the market, by filling out the form below.   Chargement&hellip;
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