L'Espagne rejoint la France et l'Allemagne dans le projet d'avion de combat du futur

Sur le même sujet

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  3 novembre 2020 | International, Aérospatial

  Military Technology Could Bolster Bell’s Commercial Helicopters

  Tony Osborne October 30, 2020 Bell is pondering how to incorporate advanced technologies developed for its future military platforms into its commercial rotorcraft. Since its rebranding as more of a technology company than a helicopter OEM, CEO Mitch Snyder has been pushing the company on a course of innovation, investing in autonomous flight and electric propulsion as well as advancing defense capabilities. But there appears to be little obvious gain for Bell's line of civil rotorcraft. In the last couple of years, its commercial helicopters have received only fairly minor upgrades. The Model 407GXi light single-engine platform had its avionics upgraded so that it can fly under instrument flight rules, while the Model 412 medium twin received new avionics and uprated power. Yet both upgrades were essentially spun off from modifications for military programs. The 407 update was developed for the U.S. Navy's rotary-wing trainer requirement, which Bell lost to Leonardo, and the 412EPi was born from the type's selection by Japan for its UH-X military utility requirement. Bell's restraint in further developing commercial rotorcraft likely is due to its prolonged effort to bring the new Model 525 to market. Nor is it a great time to bring a new aircraft to market. Sales remain stubbornly slow in the aftermath of a fall in energy prices that dramatically reduced orders from the lucrative oil-and-gas support market. Progress in bringing the fly-by-wire, 9.3-metric-ton 525 super-medium to market—it was launched in 2012 and flown for the first time in 2015—has been painfully slow, in part due to the fatal loss of one prototype but also due to the need to convince certification authorities of fly-by-wire technology benefits. “The hurdle is higher now to try and get [the 525] certified,” Snyder told Aviation Week during a virtual roundtable on Oct. 19. “This technology brings all these benefits and makes the aircraft safer. . . . You have to walk them through and give them time to understand it,” he said. Snyder believes things are on track. “We feel very good about getting certified in 2021,” he added, noting that the company is finishing up testing and preparing for the submission of certification documentation to the FAA. He said Bell is continuing to evaluate new commercial platforms, although the cost of development and certification is prohibitive. “We're always looking to see if there's a clean-sheet out there that we may want to do,” he said. “But I can tell you, at least right now, our focus has been around derivatives to our military products and more about adapting upgrades to our existing models.” The approach appears to be in line with his views at last year's Paris Air Show, where he suggested Bell may not develop a new clean-sheet commercial conventional rotorcraft beyond the 525. One area of opportunity could be development of a single-engine medium helicopter, he hinted, building on Bell's Model 360 Invictus prototype for the U.S. Army's Future Attack Reconnaissance Aircraft (FARA) requirement. “Bell's got a lot of single-mediums out there,” said Snyder, noting that hundreds of Model 204/205 Iroquois helicopters remain in service with militaries, civilian operators and government agencies. Operators have become reliant on twin-engine helicopters, particularly because in some parts of the world, notably Europe, single-engine rotorcraft are banned from flying over urban areas. But Snyder said the 360 Invictus also features a supplemental power unit that can act as an auxiliary power unit as well as provide additional performance or auto-rotation power, and could be an enabler for a single-engine medium. It is possible that Bell is looking at a military utility variant of the 360 Invictus, pairing the aircraft with the attack version in the same way that its UH-1Y Venom and AH-1Z Viper platforms have built on the Huey and Cobra. Such a platform could receive interest from the U.S. special operations community, which is looking to replace the Boeing AH-6/MH-6 Little Bird family. Officials have noted that they would like to be able to adapt a FARA platform to carry troops. Sikorsky's Raider X can do so, but the Bell FARA cannot, until a more utilitarian version emerges (AW&ST June 1-14, p. 28). The Army's selection of Bell's V-280 tiltrotor as the larger Future Long-Range Assault Aircraft could enable a commercial spinoff of the platform, Snyder suggests. Bell is also looking to make commercial use of its Electrically Distributed Anti-Torque (EDAT) technology, a ducted electric tailrotor system tested on a Bell 429 light-twin. Flight tests for it were only revealed in February, despite the aircraft's flights in plain sight from its Mirabel, Quebec, facility since May 2019. Testing showed that the EDAT reduced noise levels, but there were also benefits in terms of safety, enabling the option of switching off the anti-torque system while the engines and main rotor are still turning. The EDAT eliminates complex tailrotor gearboxes and shafts and requires less costly inspections and maintenance as well. “We pulled in off-the-shelf technologies to make the demo occur within one year,” said Snyder. “Now we're evaluating what the real technology needs to be as far as repackaging it in the weight and size that we require.” Snyder said the EDAT technology will be aimed at a commercial rotorcraft, but for which product line or when it might be commercially available has yet to be decided. https://aviationweek.com/aerospace/aircraft-propulsion/military-technology-could-bolster-bells-commercial-helicopters

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  28 juillet 2020 | International, C4ISR

  US Army begins experimenting with new network tools

  Andrew Eversden WASHINGTON — The U.S. Army's combat capabilities development team kicked off a monthslong experiment last week to test emerging technologies that could be added into the service's tactical network. The third annual Network Modernization Experiment at Joint Base McGuire-Dix-Lakehurst in New Jersey started July 20 and ends Oct. 2. NetModX provides an opportunity for the Combat Capabilities Development Command's C5ISR Center — or Command, Control, Communication, Computers, Cyber, Intelligence, Surveillance, and Reconnaissance Center — to perform field tests with emerging capabilities that have largely been tested in the lab. Field tests with simulated threat environments, as opposed to lab tests, are important because technologies react in unexpected ways due to realities like different types of trees or terrain. This year's theme for NetModX is mission command and command-post survivability, which means participants will focus on technologies that could be fielded in the Army's Integrated Tactical Network Capability Set '23 and Capability Set '25 — future iterations of network tools that the Army plans to deliver to soldiers every two years. In this year's test, the C5ISR Center is testing communications capabilities that allow for distributed mission command systems across the battlefield “and wider area,” said Michael Brownfield, chief of the future capabilities office at the C5ISR Center. “We've learned by watching our enemies fight, and we know that to survive on the battlefield, No. 1, they can't be able to see us,” Brownfield told C4ISRNET in an interview. “And No. 2, we have to distribute our systems across the battlefield to give them multiple targets and multiple dilemmas in order to survive.” NetModX is also testing network resiliency capabilities that could be delivered as part of Capability Set '23. Preliminary design review for the capability set is scheduled for April next year. To test the effectiveness of the resiliency projects the center developed in the lab, the C5ISR Center created a “state-of-the-art red cell” that attacks the network using enemy's tactics, techniques and procedures, according to Brownfield. The goal is to make sure the technology can withstand electronic attacks and allow for continuous operations in contested environments when in the hands of deployed soldiers. “What resiliency means to us is the network bends, it doesn't break,” Brownfield said. “And the commanders have the information they need and the coordination that they need to fight the battle.” A modular radio frequency system of systems is undergoing tests, and Brownfield says it will “revolutionize” the fight on the battlefield. The system automatically switches between primary, alternate, contingency and emergency, or PACE, radios by sensing if radio frequencies are being jammed. The system then responds by automatically switching radio channels to allow for seamless communications in a contested environment. Currently, “it's kind of hard to switch to alternate comms when the person you're talking to is on their primary, not their alternative comms,” Brownfield said. “And the process is very slow. It's human-driven.” Now, the automatic PACE system senses the environment in milliseconds, he said. At last year's experiment, which focused on network transport capabilities to support precision fires for multidomain operations, the center experimented with radios that could flip to new channels on their own, while launching brute force and other more sophisticated attacks against the radios to see how much stress they could handle before passing data became impossible. This year will be a little different. “This year, we're pairing different radios together and see how they can work to actually change the type of modulation schemes that we use to maneuver in cyberspace around for continuous operations while under enemy attack and under contested electronic warfare conditions,” Brownfield said. One of the top priorities for this year's experiment is allowing for projects leaders to bring their technology into to the field, no matter what stage of development they are in, to be tested in an “operationally relevant environment,” Brownfield said. The team then collects data on how the technology performs and puts it into a database where it can be queried to answer specific performance questions. “So we can ... ask the database questions like, ‘What was my latency with these two radios at this point in time,' and start to understand the true metrics of how the systems performed in the field,” Joshua Fischer, acting chief of systems engineering, architecture, modeling and simulation at the C5ISR Center, told C4ISRNET. He added that those involved are also looking at network throughput. https://www.c4isrnet.com/yahoo-syndication/2020/07/24/us-army-begins-experimenting-with-new-network-tools/

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  24 septembre 2018 | International, Naval

  Northrop Grumman wins modification on big electronic warfare contract

  By: Mark Pomerleau The Navy awarded Northrop Grumman a cost-only modification valued at $9 million related to its work on a portion of the Navy's premier electronic warfare system. The award relates to Block 3 of the Surface Electronic Warfare Improvement Program, or SEWIP Block 3, provides ships a scalable electronic warfare enterprise suite with improved electronic attack capabilities. Last year, the Department of Defense's Inspector General's office found that the $5.7 billion SEWIP was experiencing significant cost overruns that could put the program behind schedule. Though much of the specific amounts were redacted, the report called the overruns “significant increases” over the budget for the engineering and manufacturing development phase of SEWIP Block 3. Naval Sea Systems Command on Feb. 12, 2015, awarded the SEWIP Block 3 design and development contract to Northrop Grumman with an option for the EMD phase originally valued at $91.7 million. https://www.c4isrnet.com/electronic-warfare/2018/09/21/northrop-grumman-wins-modification-on-big-electronic-warfare-contract