How the US Navy is creating the ‘nirvana of one combat system’

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  28 juillet 2024 | International, C4ISR, Sécurité

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  26 septembre 2018 | International, Aérospatial

  US Air Force turns to data analytics to solve B-1, C-5 maintenance challenges

  By: Valerie Insinna WASHINGTON — The U.S. Air Force is making changes to the way it sustains the B-1B Lancer bomber and C-5 Super Galaxy cargo plane, moving to a maintenance approach that will allow it to use data analytics to predict problems, the acting head of Air Force Materiel Command said. Both the B-1 and C-5 fleets transitioned to a conditions-based maintenance model last month, Lt. Gen. Robert McMurry, commander of the Air Force Life Cycle Management Center, told Defense News in a Sept. 18 interview. “Given the aging fleet situation that we have, we probably need to be using data better to take care of it — which is a drive toward what most everyone right now is saying is the right way to manage fleet sustainment, which is through condition-based maintenance and data analytics,” he said. “So we're trying to bring that on.” The approach — which involves using algorithms to predict the need for repairs rather than waiting for a part to break — is a standard practice in the commercial airline industry to help reduce maintenance-related delays or cancellations, but has been less common in the Air Force. AFMC determined it needed to make a greater push toward conditions-based maintenance as a result of servicewide reviews triggered by rising concerns about the number of aviation-related mishaps. The first review, directed by Air Force Chief of Staff Gen. Dave Goldfein, involved a one-day standdown that would give flying and maintenance units a chance to communicate potential safety concerns up the chain of command. Gen. Ellen Pawlikowski, then the head of AFMC, also directed the organizations under her command, like the Air Force Sustaiment Center, to evaluate its own data. The reviews have since concluded, with the Air Force finding “two systems ... where high risk was accepted,” said McMurry, noting that “operational security does not allow us to identify them.” “Our process is dealing with those responsibly,” he added. The B-1 and C-5 were chosen as pilot programs for the conditions-based maintenance approach because they are sustained by airmen and have older, relatively small inventories, making for a more manageable data set. But the planes have something else in common — a recent history of well-publicized mishaps. The C-5 has sustained a number of nose landing gear malfunctions that led to a standdown and maintenance assessment in 2017. But despite a fix being put in place, there have still been problems with the gear, such as a March 2018 event where one C-5 landed on its nose at Joint Base San Antonio-Lackland, Texas. Meanwhile, the B-1 fleet was temporarily grounded in June after a safety investigation board found problems with ejection seat components while investigating a May 1 emergency landingwhere the ejection seats did not deploy. Full article: https://www.defensenews.com/digital-show-dailies/air-force-association/2018/09/25/air-force-looks-to-data-analytics-to-help-solve-b-1-c-5-maintenance-challenges/

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  8 mai 2019 | International, Naval

  The US Navy is eyeing a big change to its new stealth destroyers

  By: David B. Larter NATIONAL HARBOR, Md. — The U.S. Navy is considering a significant change to its new stealth destroyers, one driven by the change of mission announced in last year's budget documents, the head of the program said May 7 at the Sea-Air-Space conference. The service has been struggling to find a use for the ship's advanced gun system — the largest of its type fielded by the service since World War II — and now is considering stripping them off the platform entirely, said Capt. Kevin Smith, the DDG-1000 program manager at Program Executive Officer Ships. The Navy sidelined the guns after the service truncated the buy to just three ships, and after the ammunition, called the Long-Range Land-Attack Projectile, ballooned in price to more than $800,000 per round. "The guns are in layup,” Smith said. “We're waiting for that bullet to come around that will give us the most range possible. But given that that is offensive surface strike, we're going to look at other capabilities potentially that we could use in that volume.” The ships shifted missions from land attack to ship-hunting and -killing last year. The Navy is integrating the SM-6 missile, which has a surface-attack mode, and are integrating the maritime strike Tomahawk to fill out the new capabilities. In April testimony, the Navy's top requirements officer, Vice Adm. William Merz, told Congress that the slow development of the Advanced Gun System was holding back the Zumwalt. “Even at the high cost, we still weren't really getting what we had asked for,” he said. “So what we've elected to do is to separate the gun effort from the ship effort because we really got to the point where now we're holding up the ship.” The Navy has touted the ship's excess space, weight, power and cooling as advantages the service would want throughout the ship's life. Everything from directed energy and electromagnetic rail guns to electronic warfare equipment has been floated as add-ons to the Zumwalt-class destroyers. The Navy got in its present pickle with the 155mm/.62-caliber gun with automated magazine and handling system because the service cut the buy from 28 ships, to seven, and finally to three. The AGS was developed specifically for the Zumwalt class, as was the LRLAP round it was intended to shoot. There was no backup plan, so when the buy went from 28 to three, the costs remained static, driving the price of the rounds through the roof. The program itself is coming along, said Smith. The Zumwalt is going through trials as its combat system installation wraps up; the Michael Monsoor is heading into the yards for its combat system installation; and the Lyndon B. Johnson is nearly 85 percent complete. The remaining work on Johnson involves running cables, painting spaces and otherwise putting the finishing touches on the ship. The ship will then leave Bath, Maine, and head toward its home port of San Diego, California. “We're going to energize high voltage in September, lighting off the generators in the spring, then we'll be going to test and activation for the [hull, mechanical and electrical systems], trials in the fall, then delivery.” https://www.defensenews.com/digital-show-dailies/navy-league/2019/05/07/the-us-navy-is-eyeing-a-big-change-to-its-new-stealth-destroyers