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April 6, 2021 | International, Aerospace

À Saclay, la DGA simule l’altitude pour tester les moteurs en conditions extrêmes

L'Usine Nouvelle consacre un article au Centre d'Essais des Propulseurs du Ministère des Armées, situé sur le plateau de Saclay (Essonne), qui dispose de moyens uniques en Europe pour reproduire au sol les conditions de vols extrêmes subies par les aéronefs. Le centre technique utilise l'eau, venue des étangs voisins de Versailles, qui, amenée aux températures et aux pressions voulues, permet de récréer les flux d'air et les conditions atmosphériques de vol dans de grands caissons capables d'accueillir des moteurs. Les cinq caissons atmosphériques du centre permettent de reproduire des conditions de vol extrêmes, que ce soit en termes d'altitude (jusqu'à 20 000 mètres), de vitesse (jusqu'à Mach 3) et de température (de - 70 à + 250 °C). « Par rapport à un vol réel, nous maîtrisons mieux les tests et nous pouvons plus facilement étudier les paramètres qui nous intéressent », explique Marie-José Martinez, la directrice du site. Au-delà des programmes d'armement, le centre propose également des prestations aux grands motoristes mondiaux, tels que Safran ou Rolls-Royce. L'avion de combat SCAF pourrait aussi en bénéficier.

L'Usine Nouvelle du 6 avril

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  • Army tactical network office wants industry info on SATCOM as a service

    October 16, 2020 | International, C4ISR

    Army tactical network office wants industry info on SATCOM as a service

    Andrew Eversden WASHINGTON — The U.S. Army's tactical network modernization office released a request for information Wednesday for commercial satellite communications as a service. The RFI, released by Program Executive Office Command, Control, Communications-Tactical, will give the Army tactical network team an improved understanding of existing industry best practices, technological advancements and innovative business models for commercially managed satellites that could replace the operating design of its logistics network, known as the sustainment tactical network. “We are looking to our industry partners to provide us with inventive approaches to meet our logistics transport capabilities needs,” said Col. Shane Taylor, the Army's project manager for Tactical Network (PM TN), in a press release. “This includes both end item material solutions, as well as what corresponding leasing cost models could look like to enable the Army to maximize capabilities while balancing long-term affordability.” Commercially managed SATCOM would be an improvement over the standard SATCOM capabilities because currently the Army must purchase all the hardware, software, maintenance and sustainment needs, along with other related capabilities, on independent, standalone contracts, the press release said. With SATCOM as a service, the PEO C3T will procure all the capabilities under a single contract, paying for each leased Very Small Aperture Terminal (VSAT) ground satellite terminal. "We want to deliver the right STN SATCOM capability at the right price, while keeping current with technology and ahead of obsolescence,” said Lt. Col. Natashia Coleman, product lead for Unified Network Capabilities and Integration. “To do that we need to better understand how and what industry can provide, what their different managed services models would look like, how they could each best support our hardware and support services requirements, and then compare that to the more traditional way we are providing the capability now and determine which would work best. “Whatever the outcome, taking the time upfront to review all of the options will enable us to deliver the best solution for the Army,” she added. According to Paul Mehney, communications director for PEO C3T, the program office expects industry to demonstrate their SATCOM as a service capabilities for engineer and operational assessment. Mehney said that the office will consider the companies' ability to provide and maintain terminals, obtain host nation agreements for use of bandwidth, provide a help desk to address network access issues, and technical support to users and VSAT systems. Mehney also said that the logistics network modernization efforts aligns with increased capacity, resiliency and convergence goals of Capability Set '23, the next iteration of new network tools set to be delivered in fiscal 2023. “We are looking to incorporate STN design goals as part of CS23 and beyond; providing initial STN elements for CS23 (such as modernized VSAT and Local Transport capabilities) to support CS priorities over time,” Mehney said. Responses are due Nov. 6. https://www.c4isrnet.com/show-reporter/ausa/2020/10/14/army-tactical-network-office-released-rfi-for-satcom-as-a-service/

  • BAE to bring advanced radar jamming tech to US Army aircraft

    November 13, 2019 | International, Aerospace, C4ISR

    BAE to bring advanced radar jamming tech to US Army aircraft

    By: Jen Judson WASHINGTON — BAE Systems plans to demonstrate an interim advanced radar jamming technology next summer for helicopters and unmanned aircraft systems that is lighter and smaller than systems available now. The company issued a statement Nov. 12 announcing the U.S. Army awarded it a research and development contract to bring the technology to bear. The system “aims to improve air survivability and mission effectiveness” for aircraft “by detecting and defeating complex and unknown threats in electronic combat," the statement read. BAE will demonstrate the technology in July 2020. The technology is under development within BAE Systems' FAST Labs and combines adaptive radio frequency jamming and sensing capabilities into one system, a company statement noted. “Whereas today's electronic countermeasure systems are too bulky and heavy for most rotary-wing and UAS platforms, BAE Systems technology will combine multiple, software-programmable antennas into a digital phased array that will enable simultaneous functions, exceeding existing capabilities while reducing the size, weight, and power of current systems,” according to the British company's statement. As the Army looks to modernize its capabilities to fight across multiple domains in highly contested environments, the technology, the company said, will enable the aircraft to fly closer to threats and remain protected. Lighter and smaller systems are also crucial, as existing aircraft continues to be weighed down by additional capabilities for fighting near-peer threats. “With the continuously evolving threat landscape, it's critical to provide the next-generation of digital phased array technology to better defend our armed forces in electronic warfare,” Chris Rappa, product line director for radio frequency, electronic warfare and advanced electronics at FAST Labs, said in the statement. “Our technology will give the Army's rotary-wing aircraft and UAS a new, low SWaP [size, weight and power] system to securely and drastically increase their range of movements in future missions,” he added. BAE is planning flight tests within the next few years, FAST Labs Program Manager Ben McMahon told Defense News. https://www.defensenews.com/land/2019/11/12/bae-is-bringing-advanced-radar-jamming-tech-to-us-army-aircraft/

  • Poland buys missiles for hitting targets spotted by radar balloons

    May 29, 2024 | International, Land

    Poland buys missiles for hitting targets spotted by radar balloons

    The new buy is part of a plan to fortify Poland's borders with Russia and Belarus, with sensors watching for threats as far as 1,000 kilometers away.

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