13 juin 2024 | International, Sécurité
Why SaaS Security is Suddenly Hot: Racing to Defend and Comply
Are your third-party SaaS risks under control? Discover the four-step process to secure your SaaS ecosystem.
19 décembre 2018 | International, Aérospatial
New Materials Architectures Sought to Cool Hypersonic Vehicles
Hypersonic vehicles fly through the atmosphere at incredibly high speeds, creating intense friction with the surrounding air as they travel at Mach 5 or above – five times faster than sound travels. Developing structures that can withstand furnace-like temperatures at such high speeds is a technical challenge, especially for leading edges that bear the brunt of the heat.
To address this thermal challenge, DARPA recently announced its Materials Architectures and Characterization for Hypersonics (MACH) program. The MACH program seeks to develop and demonstrate new design and material solutions for sharp, shape-stable, cooled leading edges for hypersonic vehicles. A Proposers Day describing the program will take place January 22, 2019 in Arlington, Virginia: https://go.usa.gov/xEcEy.
“For decades people have studied cooling the hot leading edges of hypersonic vehicles but haven't been able to demonstrate practical concepts in flight,” said Bill Carter, program manager in DARPA's Defense Sciences Office. “The key is developing scalable materials architectures that enable mass transport to spread and reject heat. In recent years we've seen advances in thermal engineering and manufacturing that could enable the design and fabrication of very complex architectures not possible in the past. If successful, we could see a breakthrough in mitigating aerothermal effects at the leading edge that would enhance hypersonic performance.”
The MACH program will comprise two technical areas. The first area aims to develop and mature fully integrated passive thermal management system to cool leading edges based on scalable net-shape manufacturing and advanced thermal design. The second technical area will focus on next-generation hypersonic materials research, applying modern high-fidelity computation capabilities to develop new passive and active thermal management concepts, coatings and materials for future cooled hypersonic leading edge applications. Both technical areas will be described in a Broad Agency Announcement solicitation expected in mid-January 2019 on DARPA's FedBizOpps page here: http://go.usa.gov/Dom.
The MACH program seeks expertise in thermal engineering and design, advanced computational materials development, architected materials design, fabrication and testing (including net shape fabrication of high temperature metals, ceramics and their composites), hypersonic leading-edge design and performance, and advanced thermal protection systems. Registration details for Proposers Day are available here: http://events.sa-meetings.com/MACHProposersDay.
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7 janvier 2020 | International, Aérospatial
L3 Technologies to upgrade Greek F-16s in $28M contract
ByEd Adamczyk Jan. 6 (UPI) -- L3 Technologies will upgrade the F-16 fighter plane training system of Greek Air Force F-16 in a $28 million contract announced by the U.S. Defense Department. The Texas-based company will improve Aircrew Training Devices for conversion of Hellenic Air Force F-16s to the new F-16V configuration. The new variant includes add-ons which include electronically scanned array radar, a new mission computer and electronic warfare suite, automated ground collision avoidance system, and various cockpit improvements. The package can be retrofitted to most F-16s. The aircraft, in service since 1978 and known as the Fighting Falcon, has been built by General Dynamics and Lockheed Martin. Over 4,600 F-16s, in use by 25 countries, have been built. The "V" suffix indicates the "Viper" package of improvements. The Hellenic Air Force has 154 F-16s in three variants, with the upgrades planned for 84 of the planes. Work will be performed at L3's Arlington, Texas, facility, and is expected to be completed by Dec. 31, 2027, the Defense Department said Friday in a statement. The award completely involves Foreign Military Sales to Greece. The statement by the Pentagon comes two weeks after Greek Ministry of Defense announced that seven-year maintenance contracts with French companies Dassault Aviation, Safran Military Engines and Thales were signed to similarly upgrade the Mirage 2000-5 combat aircraft by the Hellenic Air Force. Those contracts were valued at $290.8 million. https://www.upi.com/Defense-News/2020/01/06/L3-Technologies-to-upgrade-Greek-F-16s-in-28M-contract/5451578328820
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2 février 2021 | International, Aérospatial
Armée de l'Air : vers un dernier retrofit des Gabriel
Jean-Marc Tanguy Les deux C-160G Gabriel, opérés par l'escadron « Dunkerque » d'Evreux, vont subir un dernier rétrofit avant le retrait de service. En attendant les Dassault Falcon Archange Les deux C-160G Gabriel, opérés par l'escadron « Dunkerque » d'Evreux, vont subir un dernier rétrofit avant le retrait de service. Cette ultime opération est sensée leur permettre de durer au-delà de 2025, la date de retrait qui était initialement envisagée, et qui, on le sait désormais, ne sera pas tenue, à quelques années près. Leur relève doit être assurée par les trois Archange, co-développés par Dassault Aviation et Thales. Les deux appareils recevront des améliorations dans les interfaces homme-machine et les capacités de recueil de l'appareil. Un retrofit confié à l'AIA de Clermont-Ferrand ? C'est l'AIA de Clermont-Ferrand qui est traditionnellement chargé de ces opérations de rétrofit (comme d'entretien). On ignore, à ce stade, si ce sera encore le cas. Il est, en tout état de cause, le dernier industriel à travailler sur les Transall. Les deux Gabriel sont entrés en service en 1989 et tutoieront donc les 40 ans de service, à leur retrait. Ils ont été de toutes les opérations extérieures majeures depuis la guerre du Golfe, notamment dans les Balkans, en Afghanistan. En Libye, ils ont pris une nouvelle dimension, confirmée au Sahel puis au Levant. Des Gabriel aux frontières russes Les C-160G Gabriel sont néanmoins régulièrement aperçu aux frontières russes, comme d'ailleurs les Mirage 2000D qui ont repris la mission ROEM aux Mirage F1CR, en emportant le pod Astac. L'escadron dispose désormais de ses propres Transall ravitailleurs (également utilisables pour d'autres missions) et de quatre ALSR (avions légers de surveillance et de renseignement) dont deux postés à Barkhane. Des ALSR dont certains répondent au doux nom de Vador. https://www.air-cosmos.com/article/arme-de-lair-vers-un-dernier-retrofit-des-gabriel-24148