2 juin 2023 | International, Aérospatial

Ministry of Defense of Argentina to Acquire Six Bell 407GXi Aircraft

The Bell 407GXi helicopters will be operated by the Argentinean Air Force and Army to assist in Search and Rescue Missions

https://www.epicos.com/article/763670/ministry-defense-argentina-acquire-six-bell-407gxi-aircraft

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  • Thales Alenia Space and Maxar Consortium Achieve Significant Milestone for Telesat’s LEO Satellite Constellation

    6 mai 2019 | International, Aérospatial, C4ISR

    Thales Alenia Space and Maxar Consortium Achieve Significant Milestone for Telesat’s LEO Satellite Constellation

    CANNES, France & WESTMINSTER, Colo.--(BUSINESS WIRE)--Thales Alenia Space, a Joint Venture between Thales (67%) and Leonardo (33%) and Maxar Technologies (NYSE: MAXR) (TSX: MAXR), have completed an important milestone for the Telesat LEO constellation. Our solution leverages both Maxar and Thales Alenia Space's experience in building LEO constellations and also integrates advanced technologies from Maxar's MDA business. The consortium has now significantly advanced their detailed, low-risk designs for the complete LEO system, including system optimization, requirements development, engineering trade-offs and technology prototyping to establish mature and compelling designs for Telesat LEO's space, ground and user terminal segments. As previously announced, Telesat selected the consortium of Thales Alenia Space and Maxar, as one of two contractors for its LEO system design phase to design an end-to-end communications system, including satellites, landing stations, user terminals, operations centers, and ground network. In January, the consortium, led by Thales Alenia Space, announced the success of the System Requirements Review. The Thales Alenia Space / Maxar design for Telesat LEO is based on the combined companies' proven experience, industrial capability and a strong supplier base for fully integrated communications satellite systems, including payload antenna design, on-board processing, optical inter-satellite links and LEO satellite production. This milestone is the result of fruitful and efficient teamwork between the two commercial companies. “Together with Maxar, we bring a strong expertise in integrated systems, high throughput payloads, advanced antennas and processors, as well as production heritage for constellations of high technology satellites. Leveraging the flight proven success of sophisticated constellations deployed by Thales Alenia Space, we are confident to enable Telesat LEO to deliver low-risk, breakthrough performance and affordability dedicated to broadband services around the world,” declared Martin Van Schaik, Senior VP Sales and Marketing Thales Alenia Space. “Achieving this milestone demonstrates the success of Maxar's close collaboration with Thales Alenia Space and highlights the progress we've made in our innovative and low-risk design for Telesat's LEO constellation. Our solution leverages both Maxar and Thales Alenia Space's experience in building LEO constellations and also integrates advanced technologies from Maxar's MDA business,” said Megan Fitzgerald, Maxar's Senior Vice President and General Manager of Space Solutions. “For over 60 years, Maxar has helped to address many of the world's most challenging communications requirements, delivering some of the most complex, powerful and highest capacity satellite systems, and building a better, more connected world.” The operations of DigitalGlobe, SSL and Radiant Solutions were unified under the Maxar brand in February; MDA continues to operate as an independent business unit within the Maxar organization. https://www.businesswire.com/news/home/20190506005173/en

  • US Navy should turn to unmanned systems to track and destroy submarines

    14 avril 2020 | International, Naval

    US Navy should turn to unmanned systems to track and destroy submarines

    By: Bryan Clark Anti-submarine warfare, or ASW, is one of a navy's most difficult missions. Sonars detect submarines with only a fraction of the range and precision possible using radars or visual sensors against ships above the water. Submarines can carry missiles able to hit targets hundreds of miles away, requiring searches to cover potentially vast areas. And the torpedoes that aircraft and surface ships use to sink submarines need to be dropped right on the submarine to have any chance of sinking it. These challenges led the Cold War-era U.S. Navy to rely on a sequential approach for tracking enemy submarines. Electronic or visual intelligence sources would report when an opposing sub was leaving port, and it would hopefully get picked up by sound surveillance, or SOSUS — sonar arrays on the sea floor — as it entered chokepoints, like that between Iceland and the United Kingdom. Patrol aircraft would then attempt to track the submarine using sonar-equipped buoys, or sonobuoys, and eventually turn it over to a U.S. nuclear attack submarine, or SSN, for long-term trail. The U.S. ASW model broke down, however, in the decades following the Cold War as U.S. submarine and patrol aircraft fleets shrank, the Chinese submarine fleet grew, and Russian submarines became quieter. Today, the U.S. Navy devotes enormous effort to tracking each modern Russian submarine in the western Atlantic. During the 2000s, the strategy of full-spectrum ASW started an essential shift in goals, from being able to sink submarines when needed to being able to defeat submarines by preventing them from accomplishing their mission. Full-spectrum ASW and other current concepts, however, still rely on aircraft, ships and submarines for sensing, tracking and attacking enemy submarines to bottle them up near their own coasts or sink them in the open ocean. Although SOSUS has improved since the Cold War and is joined by a family of new deployable seabed arrays, the next link in the U.S. ASW chain is still a P-8A Poseidon patrol aircraft, an Arleigh Burke-class guided-missile destroyer, or a U.S. SSN. These platforms are in short supply around the world, cost hundreds of millions to billions of dollars to buy and cost hundreds of thousands of dollars a day to operate. With defense budgets flattening and likely to decrease in a post-COVID-19 environment, the U.S. Navy cannot afford to continue playing “little kid soccer” in ASW, with multiple aircraft or ships converging to track and destroy submarines before they can get within missile range of targets like aircraft carriers or bases ashore. The Navy should instead increase the use of unmanned systems in ASW across the board, which cost a fraction to buy and operate compared to their manned counterparts. Unmanned aircraft could deploy sonobuoys or stationary sonar arrays, and unmanned undersea or surface vehicles could tow passive sonar arrays. Unmanned surface vehicles could also deploy low-frequency active sonars like those carried by U.S. undersea surveillance ships that can detect or drive off submarines from dozens of miles away. Although autonomous platforms will not have the onboard operators of a destroyer or patrol aircraft, improved processing is enabling small autonomous sensors to rapidly identify contacts of interest. Line-of-sight or satellite communications can connect unmanned vehicles and sensors with operators ashore or on manned ASW platforms. A significant shortfall of today's ASW concepts is “closing the kill chain” by attacking enemy submarines. Air- or surface-launched weapons have short ranges and small warheads that reduce their ability to sink a submarine, but their cost and size prevents them from being purchased and fielded in large numbers. Unmanned systems could address this shortfall in concert with a new approach to ASW that suppresses enemy submarines rather than destroying them. During World War II and the Cold War, allied navies largely kept submarines at bay through aggressive tracking and harassing attacks, or by forcing opposing SSNs to protect ballistic missile submarines. The modern version of submarine suppression would include overt sensing operations combined with frequent torpedo or depth-bomb attacks. Although unmanned vehicles frequently launch lethal weapons today under human supervision, the small weapons that would be most useful for submarine suppression could be carried in operationally relevant numbers by medium-altitude, long-endurance UAVs or medium unmanned surface vessels. Moreover, the large number and long endurance of unmanned vehicles would enable the tracking and suppressing of many submarines over a wide area at lower risk than using patrol aircraft or destroyers. Today the U.S. Navy uses unmanned systems in ASW primarily to detect submarines. To affordably conduct peacetime surveillance and effectively defeat submarines in wartime, the Navy should increase the role of unmanned systems. Using manned platforms to conduct command and control, and unmanned vehicles to track, deter and engage submarines, could significantly reduce the costs of ASW operations and enable the Navy to scale its ASW efforts to match the growing threat posed by submarine fleets. Bryan Clark is a senior fellow at the Hudson Institute. He is an expert in naval operations, electronic warfare, autonomous systems, military competitions and war gaming. https://www.defensenews.com/opinion/commentary/2020/04/13/us-navy-should-turn-to-unmanned-systems-to-track-and-destroy-submarines/

  • Advanced Air and Missile Defense, in the Hands of Soldiers

    29 mai 2020 | International, Aérospatial, Terrestre

    Advanced Air and Missile Defense, in the Hands of Soldiers

    May 27, 2020 - It's a cold December morning at White Sands Missile Range in New Mexico, and two surrogate cruise missile targets have just been launched, one after the other. They are flying separate courses among the jagged San Andres and Sacramento mountains toward soldiers in a U.S. Army Air and Missile Defense unit at a test site called TAC-2 – Tactical Command Post 2. These sophisticated targets precisely mimic real cruise missile threats and can take advantage of this terrain to hide from the radars and sensors commanders have positioned in the area. This can create gaps in tracking that make the job of interceptor missiles or other defensive weapons more difficult – you can't hit what you can't see. Today, though, their maneuvers won't enable them to evade detection. This is Flight Test 5 (FT-5), the most sophisticated and difficult development test yet for the Army's Integrated Air and Missile Defense (IAMD) Battle Command System (IBCS), developed by Northrop Grumman. High above the range, sensors aboard U.S. Air Force F-35 fighter aircraft see and acquire the two surrogate missiles. IBCS integrates the aircraft sensor data with that of available ground sensors, including Sentinel, Patriot weapon system and U.S. Marine Corps TPS-59 radars. All share information via the IBCS Integrated Fire Control Network (IFCN). As one sensor loses sight of the threats – and each will at some point – the targets are acquired by other sensors on the IFCN, enabling IBCS to create a precise, uninterrupted composite track of each missile's movements. With data from every sensor, IBCS produces a single integrated air picture on the screens of the air defense soldiers at TAC-2. They see every change in altitude and direction as the two surrogate missiles paint tracks across their screens. Because IBCS enables joint weapons as well as joint sensors, the defenders at the controls can select the best effector to use against these targets. Today, the soldiers are about to launch two Patriot Advanced Capability 2 (PAC-2) interceptor missiles. “Without IBCS, all those different sensors operate independently, creating opportunities for threats to avoid detection as they fly to a target,” explained Northrop Grumman IBCS Program Director Mark Rist. “Without being integrated onto a network, these sensors produce a more ambiguous, less-clear air picture, making engagements of threat systems more challenging.” He is monitoring FT-5 from miles away, in the test's mission control room. The soldiers at TAC-2 can be heard on the radio, calm but urgent voices reporting “target acquired” by airborne sensor, and talking of the “IP” or intercept point, and “kill box.” It's only been moments since the threats were launched, but now comes “Free to engage ... Missile away ... Missile away ...” One, then another PAC-2 interceptor missile is launched by the soldiers. IBCS is not only able to launch the missiles, but also plays a critical role in the engagement by actively closing the fire control loop and providing in-flight updates as the PAC-2s converge on their targets. The surrogate cruise missile targets are closing in and can now be seen on video in the control room – and then suddenly they can't: One, then the other disappears in a ball of fire as the PAC-2s destroy them. Cheers erupted in the control room, and those of Rist and his team may have been loudest among the many generals, colonels and visiting officials that day at White Sands. After years of effort, working closely and constantly with soldiers, FT-5 fully demonstrated IBCS's unprecedented capability to integrate sensors and effectors to detect, track and simultaneously engage multiple targets in flight. “Information is ammunition, and IBCS is providing soldiers with more,” Rist said. “We brought a lot of things together in this development test. It was the first including joint operations with the Air Force F-35 and Marine Corps radar systems, the first with Air Defense Artillery soldiers at the controls, and the first involving software developed using our Agile methodology.” FT-5 was the latest in a series of test successes, and further evidence of the program's maturity as soldiers train on IBCS equipment in preparation for an important Limited User Test (LUT) this spring. “I'm very proud of these soldiers and of the system's performance,” said Colonel Phil Rottenborn, Army IAMD project manager. “This was the first time soldiers conducted a live engagement using IBCS in a developmental test, and they showed we are ready to go into the operational test phase.” “Success!” said Col. Tony Behrens, Army Capability Manager for the Air and Missile Defense (AMD) Command, and a nearly 26-year career Air Defense Artillery (ADA) officer. “It showed me that an Army operator – not an engineer or software developer – can sit at that console and do his or her job. I am very comfortable and confident about the path we're on.” IBCS enables soldiers to be even more effective by integrating all the systems' data and providing a common command-and-control (C2). Soldiers will only need to learn to use the IBCS C2, instead of spending time becoming specialists on only one or two of a dozen different sensor and weapon systems. That enhances IBCS's already impressive battlefield survivability, because soldiers will be capable of using any of the available sensors with any available weapon systems at any command post connected to the self-connecting, self-healing IFCN. Also, less time will be spent in recurrent training, making more time available for teaching operators defense strategy and how to fight. The IBCS “every sensor; best effector” concept gives commanders greater flexibility in defense design, allowing them to position resources for greatest coverage in far less time essentially helping to change the way soldiers see and fight air battle. Northrop Grumman's open-architecture system-of-systems approach to IBCS eases the integration of any new or legacy sensor and effector systems, which is important for U.S. joint operations and to foreign governments. Poland has an agreement with the U.S. Army to purchase IBCS for modernization of the nation's WISLA medium-range air defense system, and other countries have expressed interest as well. With the success of FT-5, Northrop Grumman will now focus on the Army's Limited User Test planned for later this year, followed by the low-rate initial production and full-rate production phases of the system, to field IBCS to Army air defenders in fiscal year 2021. Behrens said the Army must have the IBCS capabilities to be effective and successful in future combat operations. “To me, it's beyond critical,” he said. “We're not just giving soldiers a new piece of equipment, a new piece of gear. We're going to give them an entirely new way of operating on the battlefield that is so much more efficient. But it has to start with the system that enables you to do that.” IBCS may also be the Army's first big step toward multi-domain convergence – the next level above integration. “Enabling multi-domain – or more accurately, all-domain – operations is vital to ensuring battlefield advantage and superiority,” said Brig. Gen. Brian Gibson, director of the Army's AMD Cross-Functional Team, at an Association of the U.S. Army event in early March. “When successfully fielded, IBCS will be one of the Army's pathfinder capabilities into what is becoming a top priority for our military leaders: joint, all-domain command and control.” Media Contact Kenneth Kesner 256-327-6889 Kenneth.Kesner@ngc.com View source version on Northrop Grumman: https://news.northropgrumman.com/news/features/advanced-air-and-missile-defense-in-the-hands-of-soldiers

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