10 juillet 2024 | International, Aérospatial

L3Harris soars to new milestone in B-52 modernization project

During a recent 5.3-hour test flight over Texas, our team successfully tested five of the nine Line Replaceable Units we’re upgrading in the B-52’s AN/ALQ-172 EW self-protection system.

https://www.epicos.com/article/849727/l3harris-soars-new-milestone-b-52-modernization-project

Sur le même sujet

  • Here’s how the Army acquisition chief plans to equip soldiers for the next war

    11 janvier 2019 | International, Terrestre

    Here’s how the Army acquisition chief plans to equip soldiers for the next war

    By: Todd South In the last year, the Army has embarked on several major modernization goals, creating cross-functional teams for major priorities and the new four-star Army Futures Command, the first such effort in decades. Bruce Jette has served as the assistant secretary of the Army for acquisition, logistics and technology, and during that time he helped shepherd the Army's efforts to modernize following almost two decades of war. On Thursday, Jette sat down with reporters at a Defense Writers Group meeting to discuss the Army's ongoing modernization work. Your office now coordinates with the recently created Army Futures Command and the cross-functional teams. What is a concrete example of how work in priority areas has changed with the addition of these new organizations? I'll give you a prime example. In the past, we looked at air defense as systems. The way you do air defense [is], okay, I've got this altitude, that altitude and that altitude. I need a system that works at those altitudes. Okay, you told me to develop and build a system that can deal with a threat at this altitude, that altitude or another altitude. They were standalone concepts. The integration of them in a battlespace was purely done at the operator level. So, when I deliver a system under that methodology, I give you the Patriot battery. [It] stands alone, all you've got to do is put fuel in the thing, a couple of soldiers, and the thing works. So, we've taken a look at the overall threat environment. The threat environment has become more complicated. It's not just tactical ballistic missiles or jets or helicopters. Now we've got UAVs, we've got swarms, we've got cruise missiles, we've got rockets, artillery, mortar. I've got to find a way to integrate all of this. So, using the cross-functional teams, the technical side has come back and said, “Listen, normally if you want to deal with some of the inbounds that are not missiles, things like rockets, artillery and mortars, the radars that come with the Patriot battery are not the same radars you need to see RAM. Oh, by the way, we were working on this thing for the air defense that's called Integrated Air and Missile Defense Battle Command System, delivering next December, systems that are deployable.” So, I don't deliver you a Patriot battery anymore — I deliver you missile systems; I deliver you radars; I deliver you a command-and-control architecture. They all integrate, and any of the C2 components can fire any of the sets, leverage any of the sensor systems to employ an effector against any of the threats. This has positioned us to put artificial intelligence in the backside to optimize against the threat that we see in the aggregate. What role does artificial intelligence play in the work that your office is doing, especially in Army technology? AI is critically important. You'll hear a theme inside of ASA(ALT), “Time is a weapon.” Undersecretary [of the Army] Ryan McCarthy has been active in positioning for being able to pick up on some of these critical new technology areas. AFC has responsibility to focus on AI for requirements and research. We've established a center at Carnegie Mellon in Pittsburgh, Pennsylvania, for AI, and AFC has established a uniformed person and he's trying to put his arms around AI in an operational context and what has to go into the background. Meantime, the undersecretary and I and ASA(ALT) are going to be establishing for the Army a managerial approach to this. We're trying to structure an AI architecture that will become enduring and will facilitate our ability to allocate resources and conduct research and implementation of those AI capabilities throughout the force. There are AI efforts ongoing, it's just that we need to organize for combat, so to speak. So, here's one issue that we're going to run into. People get worried about whether a weapons system has AI controlling the weapon. And there are some constraints about what we're allowed to do with AI. Here's your problem: If I can't get AI involved with being able to properly manage weapons systems and firing sequences, then in the long run I lose the time window. An example is let's say you fire a bunch of artillery at me, and I need to fire at them, and you require a man in the loop for every one of those shots. There's not enough men to put in the loop to get them done fast enough. So, there's no way to counter those types of shots. So how do we put AI hardware and architecture but do proper policy? Those are some of the wrestling matches we're dealing with right now. Last year your office moved from an annual program review process to adding in monthly meetings to evaluate program progress. What's been the result of this change? Much less pain. We have System Acquisition Review reporting. We report to Congress on our Major Defense Acquisition Programs every year, and we have to tell them how it's going. At each level, we have certification requirements. In that process of doing those reports, we do these program reviews. I do basically a mini SAR review every six weeks with the entire Army staff senior leadership, with the secretary and chief present. If you figure out what's important and make a way to put metrics and reporting processes together, it makes it so much less painful. We report regularly, we report often, we report any change. If any change occurs that I need [the Army secretary] to know about, if it's a significant one, he gets an email that day, then an information paper comes to follow up, and then we'll update him at the next briefing. And then if it's an issue that's an ongoing one, then we go ahead and ensure things are done. In some cases, he gets in the plane and has flown up to meet with the CEO of the company. The [Army] secretary is very much about making us much more accessible to industry. Dinner every Monday night with a CEO of a company has been everything from a big defense contracting company to a second- or third-tier supplier. To know what did we do that we could do better, and what did we not ask for that we should be asking for? This much deeper involvement is making it much easier to keep on track. How are new approaches, such as ‘racking and stacking' groups of Army acquisitions and programs, being evaluated by senior leadership? We began something we call the deep dives. Funding is broken up into Program Element Groups, or PEGs, or groupings. Procurement is one of the PEGs. Money comes with different constraints on what we can and can't use it for. To manage those priorities and comply with the law, we have these PEGs. All procurement-style money gets managed through the equipping PEG. Last year, the secretary and the chief and I sat and went through every single program and said, “why are we doing this?” Because the truth of the matter is programs have momentum. So, why are we doing that? Because we did it last year. Do we need it? Is it the most important thing? Should we reallocate that funding against something else? We did this through all of the PEGs and prioritized all of the funding allocations for the Army. It was a very deliberate process we went through last year for the secretary and the chief to go through those things and prioritize where does the Army's operational effectiveness come from and are we properly funding and how much of that is just because of momentum and what should we do about it? We did that and a series of deep dive follow ups through the year. None of that stuff's been announced, and I'm not going to be the one to do it. That's the secretary's prerogative. He's got to go over and talk with Congress, tell them why we're doing things and sort through those pieces before he starts putting out details of what got cut and what got skinnied down or what got plussed up. https://www.armytimes.com/news/your-army/2019/01/10/heres-how-the-army-acquisition-chief-plans-to-equip-soldiers-for-the-next-war

  • General Dynamics Griffin Takes Lead To Replace M2 Bradley

    16 octobre 2018 | International, Terrestre

    General Dynamics Griffin Takes Lead To Replace M2 Bradley

    By SYDNEY J. FREEDBERG JR. BAE System's CV90 Mark IV is the latest upgrade of a 25-year-old vehicle widely used in Europe; the Rheinmetall-Raytheon Lynx is an all-new design, although individual components have a good track record; but the General Dynamics Griffin III is in the middle, combining a new gun and new electronics with the time-tested chassis from the European ASCOD family. AUSA: General Dynamics looks like the early favorite to replace the Army's 1980s-vintage M2 Bradley troop carrier. That's my personal assessment after talking at length to officers and contractors at last week's Association of the US Army conference, where months of uncertainty finally gave way to some real clarity about both what the Army wants and what industry can offer. In brief, GD's Griffin III demonstrator seems to hit the sweet spot between innovative and proven technologies that the Army wants to start fielding a Next Generation Combat Vehicle (NGCV) as soon as 2026. Of the three vehicles on display at AUSA, BAE System's CV90 Mark IV is the latest upgrade of a 25-year-old vehicle widely used in Europe; the Rheinmetall-Raytheon Lynx is an all-new design, although individual components have a good track record; but the General Dynamics Griffin III is in the middle, combining a new gun and new electronics with the time-tested chassis from the European ASCOD family. The competitors do have a lot in common. All offer tracked vehicles with diesel engines — even BAE, which once touted its hybrid-electric drives as a key selling point. All three boast open-architecture electronics to ease future upgrades, an integrated Active Protection System to shoot down incoming anti-tank warheads, modular armor that can be layered on or stripped down depending on the mission, and a turret capable of mounting a 50 mm gun, the Army's preferred caliber. Only the Griffin actually has a 50mm installed right now, however. The others currently have 35mm cannon. It's also the only vehicle that can point its gun almost straight up, at an 85 degree angle, to hit rooftop targets in urban combat, something the Army has worried about extensively. Details like this suggest that General Dynamics has been listening more closely to the Army than its competitors. In fact, even where the Griffin III underperforms its competitors, most notably by carrying fewer infantry, it does so in areas where the Army is willing to make tradeoffs. The End of the Beginning Now, it's still early in the NGCV race. While we only saw three contenders on the floor at AUSA, it's still entirely possible a fourth player could jump in. My money's on the team of SAIC and Singapore-based STK, which is already offering a modified Singaporean army vehicle for the US Army's Mobile Protected Firepower (MPF) light tank. The other MPF competitors are BAE, with an update of the Armored Gun Systemcancelled in 1996, and GD, offering a version of the Griffin. By November, the Army will award two of the three companies contracts to build prototypes. If either GD or the SAIC-ST team wins, they'll have at least a slight advantage for NGCV, since buying related vehicles for both roles will simplify training, maintenance, and supply. (BAE's AGS is totally unrelated to its CV90, so an MPF win wouldn't help it on NGCV). By contrast to MPF, the competition for NGCV is only at the end of the beginning, not the beginning of the end. The Army's still refining its requirements, in part based on discussions with industry at AUSA. What's the timeline? Col. James Schirmer, the program manager, said at the conference that “we are within weeks of having that requirement finalized.” Brig. Gen. Richard Ross Coffman, the Army's director of armored vehicle modernization, said a formal Request For Proposal (RFP) based on those requirements will come out no later than January. So there'll be time for the competitors to revise their NGCV designs before submitting them. Even after that, more than one company will get a contract to build prototypes for Army testing. What's the objective that drives both this pace and the technological tradeoffs the Army is willing to make? Fielding the first operational unit in 2026 — nine years earlier than the original plan — to help deter Russian aggression. Deadline 2026 “All options are on the table, but the schedule will be the schedule,” Brig. Gen. Coffman told reporters at AUSA. “We would like to field this vehicle by 2026.” “If someone could develop a clean sheet design that could meet that timeline,” he said, “it'd be great, but I don't know that's doable.” (By contrast, the potential replacement for the M1 Abrams tank is coming later, so the service is looking for radical innovation). Schirmer offered more specifics. “We have a pretty challenging test schedule... very similar to MPF, (so) we really can't afford a clean sheet design,” he said. The more mature the component technologies, the better, he said, but what's best is that those individual components have been proven as an integrated system. Specifically, Schirmer said, “for the Bradley replacement, we are going to be buying vehicles that are based on a mature architecture — powertrain, track, suspension — that's already in service somewhere in the world.” While these remarks leave the door open for the Lynx, or at least ajar, they're not particularly encouraging. By contrast, the CV90 series entered service with Sweden in 1993, with variants now serving in Denmark, Estonia, Finland, Holland, Norway, and Switzerland. The Griffin III is the latest member of the ASCOD family — the Spanish Pizzaro, Austrian Ulan, and British Ajax — which debuted in Spain in 2002. While the Army wants a proven hull, however, Schirmer says there is one area where technology is advancing fast enough for it be worth taking some risk: lethality, i.e. the gun and sensors. In particular, while the Bradley has a 25mm chaingun, the Army really wants NGCV to have a 50mm cannon — firing shells about four times as big — that's now in development at the service's Ammunition Research, Development, & Engineering Center (ARDEC). That gun, the XM913, is currently integrated on just one competitor, the Griffin, although both the Lynx and CV90 turrets could accommodate it. All three vehicles, like the Bradley, also have room in the turret to mount anti-tank missiles of various types. The Griffin on the show floor also mounts a launcher for AeroVironment Shrike mini-drones, while the Lynx will have the option to launch Raytheon's Coyote: Both mini-drones can be configured either with sensors to scout or with warheads to destroy. Even on weaponry, however, the Army is willing to make compromises to speed fielding, just as it introduced the original M1 Abrams with a 105 mm gun but with room to upgrade to the desired 120mm when it was ready a few years later. For NGCV, Schirmer said, they want the vehicle to have the 50mm gun eventually but “may settle on the 30 in the near term, just to meet schedule.” Armor & Passengers Besides gun caliber, the other easily measured aspect of an armored vehicle is its weight, which is very much a two-edged sword. There's been no breakthrough in armor materials since the 1980s and none on the horizon, so the only way to get better armor is to make it thicker. So a heavier vehicle is probably better protected, but it also burns more fuel, wears out more spare parts, and has more trouble getting places: Bridges and transport aircraft in particular can only take so much weight. Full article: https://breakingdefense.com/2018/10/general-dynamics-griffin-takes-lead-to-replace-m2-bradley

  • Space Force eyes advanced tech, new orbits for narrowband SATCOM

    2 juin 2024 | International, Aérospatial

    Space Force eyes advanced tech, new orbits for narrowband SATCOM

    The service may launch a "transitional" capability to MEO by 2031 if those satellites can work with existing terminals without needing major modifications.

Toutes les nouvelles