Dassault Aviation : résultats semestriels 2020

Sur le même sujet

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  26 avril 2018 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité

  New Pentagon research chief is working on lasers, AI, hypersonic munitions and more

  By: Todd South The new chief for research in the Pentagon is building an artificial intelligence center, pushing for self-driving vehicles in combat zones and more powerful lasers, and says solving the hypersonic gap means updating testing facilities. Defense Undersecretary for Research and Engineering Michael Griffin testified before the House Armed Services Committee last week, answering questions on a range of gear and procurement questions. But those most relevant to service members included weapons systems on the horizon that troops could see in combat with near peer adversaries. More rapid development will include the use of unmanned ground vehicles in formations. The Army recently announced the 10th Mountain Division and the 101st Airborne Division will have a robotic combat vehicle called the Squad Multipurpose Equipment Transport in the ranks this year for testing, which will develop the likely full-fielding gear mule-type robot. Simple tasks, such as delivering food, mail, water and fuel, could be automated sooner than some think, Griffin said. “I think, frankly, we're going to have self-driving vehicles in theater for the Army before we'll have self-driving cars on the streets,” Griffin said. “If that can be done by an automated unmanned vehicle with a relatively simple AI driving algorithm where I don't have to worry about pedestrians and road signs and all of that, why wouldn't I do that?” Griffin pointed to Chinese systems that have been fielded or can be soon fielded that can launch a strike and reach out “thousands of kilometers” from the Chinese shore and “hold our carrier battle groups or forward deployed forces on land” at risk. “We, today, do not have systems which can hold them at risk in a corresponding manner, and we don't have defenses against those systems,” Griffin told the House Armed Services Committee members on April 18. Another Chinese technology threat includes the nation's development of swarm drone technologies to counter U.S. airpower and other strengths. That means getting powerful laser systems up to snuff. But it won't happen tomorrow. “We need to have 100-kilowatt-class weapons on Army theater vehicles. We need to have 300-kilowatt-class weapons on Air Force tankers,” Griffin said. “We need to have megawatt-class directed energy weapons in space for space defense. These are things we can do over the next decade if we can maintain our focus.” Scientists he's been talking with have told him that level of laser power is five to six years away and a “megawatt laser” is within a decade with persistent investment. ‘An unacceptable situation' Sen. Martin Heinrich, D-N.M., pointed out that the testing facilities, such as White Sands Missile Range in his state, have scarcely seen any upgrades or improvements in the past two decades, despite leaps in technology for missiles, lasers and other items. Griffin agreed, saying at a low estimate at least 20 such testing facilities across the nation are in the same situation. He said the Defense Advanced Research Projects Agency does most of the leading-edge work on hypersonic missile systems and they have exactly one testing facility, a NASA wind tunnel near Langley, Virginia. “This is an unacceptable situation,” Griffin said. He promised to return with budget requests to renovate those facilities to improve testing. Sen. Gary Peters, D-Mich., asked about a new area of focus that has broad-reaching effects: artificial intelligence. Griffin oversees the creation of a Joint Artificial Intelligence Center that would create AI solutions for all the service branches. He deferred on the details but told members that he expected to return with a plan within two months. “We owe the Congress a report, I think, about two months from now on what our A.I. strategy will be. And the JAIC, the Joint Artificial Intelligence Center, will be a part of that overall strategy,” Griffin said. The plan must consider the 592 projects across the Defense Department that have AI as part of their development. https://www.defensenews.com/news/your-military/2018/04/24/new-pentagon-research-chief-is-working-on-lasers-ai-hypersonic-munitions-and-more/

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  8 octobre 2020 | International, Terrestre, C4ISR

  Army Seeks Electric Scout By 2025

  SYDNEY J. FREEDBERG JR. The Light Reconnaissance Vehicle, an off-road truck to scout ahead of airborne and light infantry units, could lead the Army's move to electric motors. But electrifying heavy cargo trucks, let alone tanks, could take decades. WASHINGTON: The Army will brief interested companies Oct. 20 on an electric-drive version of the long-delayed Light Reconnaissance Vehicle and the service's emerging strategy to convert its gas-guzzling formations to electric power. The service is working with a non-profit consortium of more than 200 companies and universities developing clean transportation technologies, CALSTART. But the driving logic here is pure Army green, not eco-friendliness. Tactically, electric vehicles accelerate quicker, run cooler, and move quieter than internal combustion ones – advantages that are all especially valuable for stealthy scouts like LRV. They can also run power-hungry high-tech systems, from sensors to lasers, without needing a bulky auxiliary power unit. Logistically, even if the Army has to recharge its electric vehicles from diesel generators, that would actually get more miles per gallon than putting the same fuel directly into an internal combustion vehicle, because electric motors are much more efficient. So electric power could reduce dependence on long supply lines and vulnerable convoys of tanker trucks, which are prime targets for adversaries ranging from Taliban irregulars to Russian missiles. Army and NATO wargames have shown some alarming vulnerabilities in the fuel supply. What's the timeline? “We'd like to see an Electric Light Reconnaissance Vehicle by FY25,” said Maj. Ryan Ressler, who's leading the effort for Army Futures Command. But electrifying the Army's whole fleet of wheeled vehicles – let alone its heavier tracked vehicles – may take decades, starting with light trucks and gradually working up to heavy armor. “You're not going to go straight to an all-electric [fleet]. The battery density is not there for your combat vehicles,” Ressler told me – at least, not yet. “We would like to see all electric vehicles by 2040,” he said. “There might be potential to have all electric vehicles in the near term, if industry can help.” The Oct. 20 industry day will be the first step toward finding out. From Light to Heavy Ressler hopes to have a formal Abbreviated Capabilities Development Document (ACDD) for ELRV approved “in a matter of months,” he told me. “We see this as the first electrified vehicle for the Army ground combat fleet.” Industry feedback on ELRV – and progress on development, if the program goes ahead – will then inform the long-term strategy for Tactical and Combat Vehicle Electrification across the wider fleet. Ressler's team is now drafting what's called an Initial Capabilities Document for TaCVE. To test those concepts out in practice, he added, “we're looking at other potential candidates for electrification right now.” High on that list is the Infantry Squad Vehicle (ISV) being built by GM Defense, an air-droppable light truck designed to carry airborne troops from their drop sites to the objective. Electric vehicles' innate stealth and reduced dependence on fuel supply would be particularly valuable to paratroopers, who operate on the ragged end of long supply lines. There's already been work done on an electric Infantry Squad Vehicle. “An electric prototype representative of the ISV proved it could be whisper-quiet, achieve sprint speed immediately, and offered excess power for extended silent watch mode exceeding current objectives,” according to an Army Futures Command white paper. LRV and ISV are natural partners. The Light Reconnaissance Vehicle was intended to scout ahead of the vulnerable Infantry Squad Vehicles, helping the unarmored transports avoid a lethal ambush. But the Army decided to delay a purpose-built LRV and use the heavier Joint Light Tactical Vehicle (JLTV) as a stopgap scout. So it looks like LRV may have a second chance at life. ISV and LRV are both ultralight vehicles, meant to support airborne troops and other light infantry units that can deploy rapidly by air but after that mostly maneuver on foot. But even light infantry brigades have a small fleet of heavy trucks to carry supplies and special equipment. Mechanized units have a host of armored vehicles – 8×8 wheeled Strykers for medium brigades; tracked tanks, howitzers, missile launchers, and troop carriers for heavy brigades – followed by an even larger number of trucks to carry fuel, spare parts, supplies, and other support. There's already been some progress with these heavier vehicles. BAE Systems is developing an experimental hybrid diesel-electric engine for the M2 Bradley troop carrier. BAE's experimented with hybrid-electric armored vehicles for decades, company exec Andrew Rosenfeld told me – they once built a hybrid as heavy as an M1 Abrams tank – but the company's recent boom in civilian hybrid-electric buses has advanced the state of the art. Their engine for the Bradley can move up to 45 tons, and the same basic design could scale larger or smaller to go in a wide range of other vehicles. The hybrid Bradley uses 10 to 20 percent less fuel during a normal mission, he told me, and it can generate 500 kilowatts of power, enough to run an Army field hospital. On the wheeled side, the Army's Ground Vehicle Systems Center (GVSC, formerly TARDEC) converted an Oshkosh cargo truck, the four-axle M977 HEMTT, to hybrid electric drive for a 2019 demonstration. That Tactical Vehicle Electrification Kit cut the HEMTT's fuel consumption by 15-25 percent, according to the Army Futures Command white paper. TVEK also tripled the truck's capacity to generate power. Increased power generation not only allows an electrified vehicle to have more technology on board, like sensors and weapons. Such vehicles could also park, plug in, and power up soldiers' charging kits, field hospitals, command posts, or radar sites – potentially replacing traditional diesel generators. “The very concept of what constitutes a vehicle has changed,” the white paper argued. “Electrification has transformed vehicles into sensor platforms, communication nodes, and mobile computational hubs.” Just as the F-35 fighter is so full of electronics that a former Air Force Chief of Staff called it “a computer that happens to fly,” electrified ground vehicles could become computers that happen to drive – and not just computers, but mobile charging stations as well. Today's complex and vulnerable supply chain must move large amounts of fuel from refinery to tanker to forward depot to individual vehicles and generators. A future system could be much more decentralized, supplying smaller amounts of fuel to hybrid-electric vehicles, which could then generate power to share with all-electric ones. Such streamlined logistics could make a life-or-death difference in wartime. The Army's concept for future combat, Multi-Domain Operations, calls for individual brigades to operate up to seven days without stopping for resupply. That's unimaginable today. Improving fuel-efficiency of internal combustion engines would make for only “marginal” progress towards the goal, the white paper argued. Truly self-sufficient combat units will require largescale replacement of fossil fuel with electricity, potentially drawn from small, mobile nuclear reactors. “It's fundamental to Multi-Domain Operations,” argued retired Lt. Gen. Eric Wesley, who commissioned the white paper when he was Futures & Concepts Center chief for Army Futures Command. He just took on a private-sector job with Flyer Defense, a maker of lightweight off-road trucks that's now developing an electric-drive vehicle with a small, built-in diesel generator to recharge itself. (This isn't a hybrid-electric drive, since the diesel doesn't' drive the wheels; it just charges the batteries). “Moving energy on the battlefield is the biggest challenge commanders will have in the future,” Wesley told me. But if you electrify your vehicle, he argued, it can “become more than just a combat vehicle: It becomes an energy node [in] a distribution network, where every vehicle is part of your energy distribution plan.” Such a decentralized and flexible system, he argues, is much harder for a Russian missile strike to take out than a fuel depot. https://breakingdefense.com/2020/10/army-seeks-electric-scout-by-2025/

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  9 juin 2024 | International, Aérospatial

  German Ministry of Interior orders up to 44 H225 helicopters for its Federal Police

  The H225 will replace the H155 and AS332 helicopters that have been in service with the German Federal Police for more than 20 years