Did you know ?
Here's a fascinating tidbit to tickle your curiosity: Did you ever imagine that popcorn could have a surprising link to the world of commercial aviation? Popcorn, that beloved crispy snack we enjoy at the movies, owes its aerodynamic qualities to the same principles that make airplanes take flight!
Did you know ?
In the early years of commercial aviation, airplanes were equipped with piston engines. During flights, these engines produced intense heat. In the 1940s, an aerospace engineer named Dr. Percy Spencer was working for Raytheon, a company specialized in electronics and microwave technology.
One day in 1945, while Dr. Spencer was working on a magnetron, a device used to generate microwaves, he noticed something astonishing. He had a bag of popcorn in his pocket, and he realized that the popcorn had started popping. Intrigued, he began to experiment by placing other foods near the magnetron and found that the microwaves heated and popped corn kernels.
This discovery led to the development of the first commercial microwave oven, the Radarange, which was introduced in 1947. One of the early markets for this new appliance was the commercial aviation industry. Modern airplanes were equipped with microwave-based heating systems, and popcorn became a popular snack on board.
The story goes that one of the first commercial flights to offer popcorn to passengers was a flight by the American airline Pan American World Airways, which served freshly popped popcorn bags to passengers during the flight. This quickly contributed to the association between commercial aviation and popcorn as a beloved onboard snack.
Therefore, thanks to Dr. Percy Spencer's accidental discovery and the growing popularity of commercial aviation, popcorn became a staple in-flight snack. Today, it is common to find popcorn bags in in-flight meal trays or onboard shops, reminding us of this fascinating anecdote.
Exxelia has a long heritage in the supply of passive components for aviation equipping the latest and most advanced aircrafts in the world. Exxelia wide product portfolio of MIL film and tantalum capacitors, MLCC, electrolytic flat packs, choke inductors, filters and transformers… answers the needs of high reliability, robustness, lightweight, high temperature or 400Hz network.
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Le saviez-vous ?
Dans les premières années de l'aviation commerciale, les avions étaient équipés de moteurs à pistons. Pendant les vols, ces moteurs produisaient une chaleur intense. Dans les années 1940, un ingénieur aéronautique du nom de Dr. Percy Spencer travaillait pour la société Raytheon, spécialisée dans les technologies de l'électronique et des micro-ondes.
Un jour de 1945, alors que Dr. Spencer travaillait sur un magnétron, un appareil utilisé pour générer des micro-ondes, il a remarqué quelque chose d'étonnant. Alors qu'il avait un sac de popcorn dans sa poche, il s'est rendu compte que le popcorn avait commencé à éclater. Intrigué, il a commencé à expérimenter en plaçant d'autres aliments près du magnétron et a constaté que les micro-ondes faisaient chauffer et éclater les grains de maïs.
Cette découverte a conduit au développement du premier four à micro-ondes commercial, le Radarange, qui a été lancé en 1947. L'un des premiers marchés pour ce nouvel appareil était l'industrie de l'aviation commerciale. En effet, les avions modernes étaient équipés de systèmes de chauffage basés sur les micro-ondes, et le pop-corn était devenu un encas populaire à bord.
L'histoire raconte que l'un des premiers vols commerciaux à proposer du pop-corn aux passagers était un vol de la compagnie aérienne américaine Pan American World Airways, qui servait des sachets de popcorn fraîchement éclaté aux passagers pendant le vol. Cela a rapidement contribué à l'association entre l'aviation commerciale et le pop-corn, en tant que collation appréciée à bord des avions.
Ainsi, grâce à la découverte accidentelle de Dr. Percy Spencer et à la popularité croissante de l'aviation commerciale, le pop-corn est devenu un incontournable des collations en vol. Aujourd'hui, il est courant de trouver des sachets de pop-corn dans les plateaux-repas ou les boutiques à bord des avions, rappelant cette anecdote fascinante.
Fournisseur reconnu de composants passifs pour le marché aéronautique, Exxelia est implanté dans les avions commerciaux et les business jets les plus récents grâce à sa large gamme de condensateurs (film MIL, tantale, MLCC, aluminium électrolytique), inductances, filtres et transformateurs… Exxelia sait répondre aux exigences de haute fiabilité, robustesse, légèreté, haute température ou réseau 400Hz.
En savoir plus : https://exxelia.com/fr/aviation/
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Powerful ALUMUNIM ELECTROLYTIC CAPACITOR RANGES AT RAILTEX – BOOTH #H02
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.
Ultra low ESR, high RF power and high self-resonant frequency The new NHB series is a complete range of MLCC based on NPO dielectric material providing a very high Self Resonant Frequency and limiting the parasite Parallel Resonant Frequencies. The series is available in 1111 size with capacitance ranging from 0. 3pF to 100pF. NHB series offers excellent performance for RF power applications at high temperature up to 175°C and at 500 VDC. The lowest ESR is obtained by combining highly conductive metal electrodes and proprietary of new NPO low loss rugged dielectrics. NHB series particularly fits for high power and high frequency applications such as: cellular base station equipment, broadband wireless service, point to point / multipoint radios and broadcasting equipment. Typical circuit applications: impedance matching, bypass, feedback, tuning, coupling and DC blocking. 100% invar tuning screws with self-locking system 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. High Q Factor Dielectric Resonators Dielectric resonators are designed to replace resonant cavities in microwave functions such as filters and oscillators. Exxelia has developed with support of ESA and CNES, a new high-end dielectric material, E7000 series, designed for high-end filters where high Q factor is requested. E7000 is Ba-Mg-Ta materials based that combines an ultra-high Q factor and the possibility to get all the temperature coefficients upon request. E7000 provides high-performance requested for space use in the frequency range 5 to 32 GHz, and guarantees up to Qxf > 250 000 at 10GHZ. Typical applications: Satellite multiplexing filter devices, radio links for communication systems (LMDS), military radars.