Egypt unveils locally made drones at EDEX 2021

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  9 juin 2024 | International, Aérospatial

  Zelenskiy welcomes French promises of Mirage 2000 warplanes to help fight Russia

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  30 juin 2020 | International, Aérospatial

  Britain Spent So Much On Two Giant Aircraft Carriers, It Can’t Afford Planes Or Escorts

  David Axe The United Kingdom is spending nearly $8 billion building two new large, conventionally-fueled aircraft carriers and equipping them with F-35B Lightning II stealth jump jets. HMS Queen Elizabeth is scheduled to deploy for the first time in 2021, ending a seven-year carrier gap that began in 2014 when the Royal Navy decommissioned the last of its three, Cold War-vintage light carriers. The U.K. military by then had already sold off the carriers' Harrier jump jets. Queen Elizabeth and her sister Prince of Wales are impressive vessels. More than 930 feet long and displacing around 70,000 tons, they are bigger and more modern than every other flattop in the world except the U.S. Navy's 11 nuclear-powered supercarriers. The carriers in theory are the steely core of a revitalized and reorganized Royal Navy. “Carrier strike provides the ability to launch fixed-wing aircraft from a ship to undertake a range of military tasks,” the U.K. National Audit Office explained in a June report. “It is central to the government's plans for the country's armed forces.” But there's a problem. Having blown billions of dollars building the ships, the U.K. government no longer can afford the aircraft, escorts and support ships that help the flattops deploy, protect them and give them striking power. Nor can the government afford to modify Queen Elizabeth or Prince of Wales to support amphibious landings, one of the early justifications for cutting existing ships—such as the assault ship HMS Ocean—in order to free up money for the carriers. The new British carrier force is hollow. And at least one analyst believes the Brits would have been better off without. The shortfalls are myriad, according to the NAO. The carriers' air wings at a minimum should include a dozen F-35Bs plus a dozen Merlin helicopters, some of which would carry the Lockheed Martin LMT-made Crowsnest early-warning radar in order to provide sensor coverage over the carrier group. Guess what. “The new Crowsnest system is 18 months late, which will affect carrier strike's capabilities in its first two years,” according to the NAO. “The [Ministry of Defense] did not oversee its contract with Lockheed Martin effectively and, despite earlier problems on the project, neither was aware of the sub-contractor's lack of progress until it was too late to meet the target delivery date.” “It subsequently concluded that the sub-contractor working on the project, Thales, failed to meet its contractual commitments to develop the equipment and had not provided sufficient information on the project's progress. The [ministry] and its industry partners have since implemented a recovery plan and enhanced monitoring arrangements. However, further delays mean that it does not expect to have full airborne radar capability until May 2023.” Meanwhile, the ministry also has been slow to buy F-35s. “From 2015, its intention has been to buy 138 Lightning II jets, which will sustain carrier strike operations to the 2060s. The [ministry] initially ordered 48 jets but has not yet committed to buying any more. In response to wider financial pressures, it will also receive seven of the 48 jets in 2025, a year later than planned.” A single Queen Elizabeth-class flattop could carry as many as 24 F-35s. But a total force of 48 F-35s probably wouldn't allow for a 24-plane air wing after taking into account training and maintenance needs. As a rule, usually no more than third of a particular fighter fleet can deploy at any given time. Equally vexing, the Royal Navy has laid up all but one of its solid support ships, which sail along with front-line vessels in order to keep them stocked with food, parts and weapons. The defense ministry “has long been aware that this will restrict the operational freedom of carrier strike but has not yet developed a solution,” the NAO warned. “In November 2019, the [ministry] stopped the competition to build three new support ships due to concerns about value for money. It believes this will delay the introduction of new ships by between 18 and 36 months, making it uncertain the first new ship will be operational before the existing support ship leaves service in 2028.” The list of shortfalls continues. A British carrier group at a minimum should include one frigate for anti-submarine protection plus a destroyer for air-defense. But the Royal Navy operates just 13 aging Type 23 frigates and six Type 45 destroyers. The former are slated to leave the fleet starting in 2023. Their replacement, the new Type 26, won't start joining the fleet until 2027. The navy expects to buy just eight Type 26s. At least five new Type 31 frigates will replace the balance of the Type 23 force, but the Type 31s lack major anti-submarine systems. All that is to say that, from the mid-2020s on, the carriers could be vulnerable to submarines. Don't expect some sudden cash windfall to save the Royal Navy from its carrier problems. If anything, the budgetary problems could get worse. The defense ministry already is cutting back on its investment in Queen Elizabeth and Prince of Wales. The government had planned to spend $75 million modifying one of the new flattops with extra accommodations in order for the ship to double as an amphibious assault ship. But according to the NAO, the ministry in March 2020 quietly dropped the amphibious requirement. The bitter irony for the navy is that it sacrificed the assault ship Ocean back in 2018 in order to free up money and manpower for the carriers and eventually claw back the lost amphibious capability by way of modifications to at least one of the newer ships. Now it appears the fleet gave up Ocean for nothing. So are the new flattops worth it? As costs rise and budgets shrink, the carriers gobble up a growing proportion of the Royal Navy's resources while at the same time falling far short of their operational potential owing to cuts at the margins of their capabilities. “Given that what the Royal Navy has become in return for its two carriers, and given how at present this investment has delivered a part-time carrier force with a small number of available fast jets, significant spares shortages, reduced escort fleet numbers and a lack of longer-term support ships or escort elements,” one commentator wrote, “then perhaps the answer to the question ‘was it all worth it' is ‘no, it was not worth the pain for the gain'—at least not in the short term.” https://www.forbes.com/sites/davidaxe/2020/06/28/britain-spent-so-much-on-two-giant-aircraft-carriers-it-cant-afford-planes-or-escorts/#7988b615bcc7

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  25 juin 2019 | International, Naval

  Navy Refining How Data Analytics Could Predict Ship Maintenance Needs

  By: Ben Werner WASHINGTON, D.C. – Extending the lifespans of existing ships using data-driven maintenance efforts is the best strategy for achieving a 355- ship navy, said the Naval Sea Systems Command chief engineer. The key to maintaining ships and enabling the Navy to extend their lifespans is data analytics, Rear Adm. Lorin Selby, the chief engineer and deputy commander of ship design, integration and naval engineering at NAVSEA, said Thursday at the American Society of Naval Engineers' annual Technology, Systems & Ship symposium. “I have ships with a number of sensors on them, measuring things like reduction gears, showering components, turbines, generators, water jets, air conditioning plants, high packs, a number of components, and we're actually pulling data off those ships, in data acquisition systems,” Selby said. At the Naval Surface Warfare Center Philadelphia Division, Selby's team is analyzing data gleaned from smaller ship component operations to determine how often such components need servicing, oil changes, filter changes, other maintenance actions and replacement. The process is called condition-based maintenance plus (CBM+), and Selby wants CBM to drive improvements in maintaining ships. “That's one of the things we're doing to get after utilizing the technology we have today to operate the ships we have today more efficiently and more effectively,” Selby said. The Navy has dabbled with CBM for years. A 2008 Department of Defense Conditions Based Maintenance Plus guidebook mentions NAVSEA efforts. However, two years ago at the ASNE TSS symposium, NAVSEA Commander Vice Adm. Tom Moore told USNI News that the Navy's use of CBM had perhaps gone too far and was disrupting the shipyards' ability to plan for large maintenance jobs properly. During previous attempts at incorporating CBM, there was a thought that, if major efforts like refurbishing tanks were only done when needed, rather than on a predetermined timetable, the Navy could avoid spending time and money on work ahead of need. However, that also meant that shipyards wouldn't have a clear work package before a ship showed up at the pier, adding uncertainty and, ultimately, more time and cost into the maintenance availability. This time around, Selby sees condition-based maintenance as a way to address smaller maintenance items in such a way that data analysis points a ship crew to components that are experiencing minor performance issues or otherwise showing signs they are about to fail before the failure actually occurs. This summer, a pilot program using enterprise remote monitoring will occur on an Arleigh Burke-class destroyer, he said. Data collected will be sent for analysis, and operators will learn how to use the data to understand how their systems are performing and if maintenance or repairs are needed. Selby wants to have a system of apps the Navy can use to collect data from ship components, analyze the data, share it with operators and schedule work. He wants to hold a competition for app developers to create apps the Navy will test for use in the fleet. Describing his vision, Selby said, “the systems that will be monitoring, say the turbine; it will tell the operators when a work procedure has to be performed and it will also then tap into the work package side of the house and generate a work package that gets sent to the ship, to the work center, to do the work. And if there's a part involved, it will be able to pull a part from the supply system.” Testing is occurring now, but Selby concedes there are some obstacles the Navy has to overcome before large-scale deployment. The Navy is struggling with how to transmit data securely, something Selby discussed during an earlier session at the symposium. The data also has to be secured. “The performance of any given asset is something we want to hold close. So I think what you have to do is you have to architect this from kind of the get-go with that kind of security mindset in mind,” Selby said. “You can harvest that data and you could potentially discover vulnerabilities, so you have to protect that. That's part of my project: as I do this, we're bringing that security aspect into the program.” Extending the lifespan of the Navy's current fleet is essential if the Navy is going to grow to 355-ships, Moore said during his keynote address after Selby spoke Thursday. The Navy, military planners at the Pentagon, the White House and lawmakers are all anxious to reach 355 ships as soon as possible because Moore said current forces are stretched too thin. “We in the Navy, we don't have enough forces to go everywhere we need to go, and we have a pretty fragile mix of ships, so that when we miss an availability coming out on time, or we don't build something to the schedule they're supposed to build to, there are real-world consequences to that,” Moore said. The true determining factor of whether a ship's lifespan can be extended, Moore said, is the platform's flexibility. The Arleigh Burke-class is the Navy's workhorse today because, during the past 30 years, the Navy has successfully updated its operating systems. Moving forward, Moore said extending the life of the ships in this class means back-fitting many of the older Flight I and Flight II with a scaled-back version of the AN/SPY-6(V) Air and Missile Defense Radar (AMDR) to keep these ships relevant to current and future mission needs. “If you're willing to do the maintenance on the ships, from a hull and mechanical perspective, you absolutely can keep them longer,” Moore said. “The issue is really not can you keep them 50 years; the issue is can they maintain combat relevance. If they can maintain combat relevance, we know we can keep them longer.” https://news.usni.org/2019/06/24/navy-refining-how-data-analytics-could-predict-ship-maintenance-needs