BAE Systems wins $148.3M Army contract to upgrade M88A1 vehicles

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  14 janvier 2021 | International, Naval

  For the US Navy, the future of shipbuilding (and warfare) is in the power plant

  By: David B. Larter WASHINGTON — The U.S. Navy wants to buy a next-generation large surface combatant by the end of the 2030s, but its not being built for a new kind of sensor or weapon system. The newly dubbed DDG(X) is being built for power. The Navy has, of course, built ships around advancements in engineering systems before: Nuclear power or steam engines, for example, have led to big leaps in naval design. But the large surface combatant is being built around a significant challenge. Weapons systems of the future such as high-powered electronic warfare systems, laser weapons, and high-powered radars and sensors will put an uneven and sometimes even unpredictable load on a ship's power system. That's pushing the Navy toward an integrated power system, says Rear Adm. Paul Schlise. “We're going to incorporate an Integrated Power System that has the ability to power up the weapons and sensors of the future,” Schlise said during the Surface Navy Association's virtual annual symposium. “[That's] the key to the realm here. It's DDG-1000-like, in some respects in that it'll have that integrated power system, but the most important thing is including the space, weight, power and cooling — reestablishing those margins to incorporate future systems that are not yet mature. “There's a lot of promise in some of those systems, but that integrated power system is the key to incorporating those feature systems that we're looking at, that we think are going to be part of that class of ship.” What is an integrated power system? Mark Vandroff, a former senior director of the National Security Council and a retired Navy captain who was the program manager for the Navy's new DDG Flight III program, said it's a major break from the kind of system used on Arleigh Burke-class destroyers. “A major advantage of a ship with an integrated power system is that the power generated by any of the ship's engines can be used for either propulsion or electricity, rather than having engines solely dedicated to one or another.” On today's destroyer, and on the Ticonderoga-class cruisers, the ship has separate systems that power the twin propulsion shafts, which turn the ship's propeller and generators that work exclusively to power the ship. An integrated power system, similar to what is on the Zumwalt-class destroyers, uses all the ship's engines to make electricity that turns the propellers and powers the weapons and sensors. The integrated power system on Zumwalt is a new layout that uses advanced induction motors to produce up to 78 megawatts of electrical power, far more than any previous destroyer or cruiser. But the issue with the large surface combatant is a little more complicated than just producing a ton of power. What energy weapons or advanced electronics systems do is put a huge tax on the electrical system of a ship, often requiring more power than the ship is able to produce at one time. So while the integrated power system isn't new, the kinds of demands these new systems will place on the power grid meant to run everything is a new kind of challenge, said Matthew Collette, associate professor of naval architecture and marine engineering at the University of Michigan. Therefore, the Navy must figure out how to best store energy so it can be available to meet unpredictable demands. “The issue is, this is different than integrated electric propulsion, which we've had on cruise ships and offshore supply vessels for two decades at this point, and it works really well,” Collette said. “But on those ships, all the electrical loads are pretty well behaved: They rise and fall slowly, and there's no issues with the stability of the electrical system. “High-powered radars, high-powered electronic warfare, certainly rail guns, the lesser extent lasers — they all ask for power really quickly, faster than a mechanical generator can suddenly produce it. So now you have to think about whether [you] use batteries or flywheels or capacitors or other techniques to get the energy available on the timescale that the load needs.” It's not an insurmountable problem, and it is one the Navy has used elsewhere. The electromagnetic launch system on the Ford-class, which has had its share of technical problems, operates off a flywheel energy storage system. But the new power system already has Congress nervous, and lawmakers are pressuring the Navy to build a land-based engineering site to test out the power and propulsion system before getting too deep into the design work for the ship. Collette said that's a sensible approach, and that on the timeline the Navy is discussing, the technology should be sufficiently advanced to support the new class. “There's been a ton of work done on this, and I think it's certainly something that in the timeframe of a large surface combatant, I would expect would work,” he said. https://www.defensenews.com/digital-show-dailies/surface-navy-association/2021/01/13/for-the-us-navy-the-future-of-shipbuilding-and-warfare-is-in-the-power-plant

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  27 novembre 2023 | International, Sécurité

  Deputy Secretary General reiterates NATO’s commitment to responsible innovation in defence and security

  NATO Deputy Secretary General Mircea Geoană addressed the Responsible Innovation Defence and Security Conference in Brussels on 27 November 2023 and thanked Belgium, the Netherlands and Luxembourg for organising the event, together with the NATO Emerging Security Challenges Division. He said that new technologies can transform our lives for the better in countless ways, but like any new technology, they bring risks, including to our security. Mr Geoană said that it is vital to develop these technologies responsibly and respecting our values - freedom, democracy, human rights and the rule of law.

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  22 janvier 2019 | International, Naval, Terrestre

  Marines, Navy Wrestle With How To Upgun Amphibs

  By SYDNEY J. FREEDBERG JR. The Marines want Vertical Launch System missile tubes on their new amphibious ships -- but the Navy isn't planning to leave room for them. ARLINGTON: The Marines want better-armed amphibious warships for high-end combat, but there's no money in the budget and little room on the ships for their preferred solution, the Vertical Launch System. That leaves them looking at less capable but more affordable upgrades. Those range from bolting small Naval Strike Missile pods onto the deck – as on the Littoral Combat Ship – to parking a HIMARS missile-launcher truck on the back of the ship – as they tested during last year's Dawn Blitz wargames. Why does this matter? In a major war against Russia or China, or even Iran, amphibious warships — as currently equipped — would have to rely on escorting destroyers both defensively, to shoot down attacking missiles and airplanes, and offensively, sinking enemy ships and bombarding targets ashore. But those destroyers might not always be available and, even if they are, they might overwhelmed by the sheer volume of incoming fire. So the Marines want better-armed amphibs that can, ideally, operate unescorted or, at minimum, take on some of the burden of their own defense. To do that, “the naval force must upgrade the C2 (command and control) suites and introduce Vertical Launch Systems,” Lt. Gen. Brian Beaudreault, the Marines' three-star deputy commandant for plans, policies, & operations, told the Surface Navy Association conference on Wednesday. But, I asked him during Q&A, is there actually any money in the budget to add VLS to amphibs? “I'm not aware that there's funding in the program for VLS,” said Beaudreault, who oversees Marine budgeting. “We can't afford as a Marine Corps to put it in there.” Full article: https://breakingdefense.com/2019/01/marines-navy-wrestle-with-how-to-upgun-amphibs