16 mai 2018 | International, Aérospatial
The airlines already use predictive maintenance technology. Now the service's materiel chief says it's a “must-do for us.”
The U.S. Air Force has started to use algorithms to predict when its aircraft will break, part of an effort to minimize the time and money they consume in the repair shop. The use of predictive analytics has been blazed by airlines, which monitor their fleets' parts in an effort to replace broken components just before — and crucially, not after — they break.
“I believe it is a must-do for us,” said Gen. Ellen Pawlikowski, the head of Air Force Materiel Command, the arm of the Air Force that oversees the maintenance of its planes. She spoke Tuesday at a Defense Writers Group breakfast in Washington. “We see this as a huge benefit.”
If the Air Force could reduce the risk of unexpected breakage — and the attendant need to fly replacement parts and repair crews around the globe — it could reduce costs and boost mission effectiveness. It could also increase the usefulness of the current fleet by reducing the number of aircraft that need to be be held in reserve as backups.
It starts with gathering data, such as the temperature of engine parts or the stresses on the airframe.
“We are trying to leverage what we already get off of airplanes, as opposed to trying to go in and put instruments in places,” Pawlikowski said. “It turns out there's quite a bit that's there, but it may not be a direct measurement. In order to measure the temperature in this one particular spot, I'm getting information somewhere else.”
Artificial intelligence and machine learning can then determine patterns.
The general said the Air Force has been learning a lot from Delta, the world's second-largest commercial airline. “Delta has demonstrated the effectiveness of predictive maintenance in dramatically reducing the number of delays to flights due to maintenance,” she said.
Over the past three years, Air Mobility Command — the arm of the Air Force that oversees all of its large cargo planes and aerial refueling tankers — has been organizing the data it collects on some of its planes. It has started using the predictive maintenance technology on its massive C-5 airlifters.
The Air Force is also using the technology on the B-1 bomber. “The B-1 is an airplane that we actually bought with a whole bunch of data that we weren't using,” Pawlikowski said. “We started to take that data in and start to analyze it....We're very excited about this because we see huge potential to improve aircraft availability and drive down the cost.”
She said she “was impressed when I saw some of the data that they were showing me.”
The Air Force Lifecycle Management Center, which reports to Pawlikowski, has been funding these trials “by finding the loose change in the seat cushions,” she said.
“As we have now shown some things ... we're seeing more and more interest in it and we're looking at increasing the investment in that to bring it further,” Pawlikowski said of the predictive maintenance.
Last September, Gen. Carlton “Dewey” Everhart, head of Air Mobility Command, stressed his desire to use predictive maintenance, but warned it would cost money to get the datafrom the companies that make the planes.
“In some cases, we'll be working this collaboratively with our industry partners,” Pawlikowski said Tuesday. “In other cases, we'll be doing it completely organically.”
Air Mobility Command is also using predictive maintenance technology on the C-130J airlifter. The latest version of the venerable Lockheed Martin cargo plane — the J model — collects reams of data as it flies. In April, the Lockheed announced it was teaming with analytics firm SAS to crunch that data.
“Everything we've been doing up to a certain point has been looking in the rear-view mirror with the data,” said Lockheed's Duane Szalwinski, a senior manager with his company's sustainment organization who specializes in analytics. “We're going to be able to look forward.”
Lockheed is working on a six-month demonstration for Air Mobility Command; officials hope to be able to predict when certain parts will break before a flight.
“If we're able to do that, it kind of changes the game in how you maintain and operate a fleet,” Szalwinski said.
The data will give military planners a wealth of information about their aircraft that could help determine the best aircraft to deploy. “All those things you now know you have insights as to what you will need at the next flight, so you act accordingly,” he said.
“Once we prove that we understand the probability of failure of these parts ... all things then become possible,” Szalwinski said. “Now it's not a matter of if, it's a matter of when. And if you know when, you can start acting accordingly. It would be a gamechanger in the way you manage a fleet.”
Lockheed also wants to use the predictive maintenance tech on the F-35 Joint Strike Fighter.
“The beauty of this is that the toolsets that we're developing, the models, how we clean the data, how we build the models, how we build the algorithms, all of that is not unique to a platform,” Szalwinski said.
Still, instituting predictive maintenance practices fleet-wide is not going to happen overnight, particularly as since it will take time to understand the data, Pawlikowski said.
Using this technology will require a cultural shift among maintenance crews because they'll be replacing parts before they actually fail, Pawlikowski said.
“One of the big benefits is the reduction in the amount of time the airmen on the flightline spends troubleshooting a broken part” because “we will take them off before they break,” she said.
8 août 2024 | International, Aérospatial
Leidos was awarded this contract under the DoDIAC's multiple-award contract (MAC) vehicle
7 mai 2020 | International, Aérospatial
After decades of building traditional helicopters in traditional ways, contractors must get ready for the Army's new high-speed Future Vertical Lift aircraft. Small makers of key parts need help. By SYDNEY J. FREEDBERG JR.on May 06, 2020 at 2:14 PM WASHINGTON: What worries the Army's aviation acquisition chief as he helps industry get ready to build a revolutionary new generation of aircraft in the midst of a global pandemic? “It's the mom and pop shops,” Patrick Mason said today. “It's the Tier 3 suppliers, typically on the hardware side.” “Those are the ones we remain focused on, because those are those are the ones that can end up in a single point failure,” the program executive officer for Army aviation continued. “That's what we're doing right now through COVID and we're going to continue to do that as we look ...to Future Vertical Lift.” While the big Tier 1 prime contractors should be fine, they depend on smaller Tier 2 suppliers for key components, and they depend on yet smaller Tier 3 suppliers. As you trace the provenance of a crucial component down that supply chain, you all too often find a single point of failure. That's some tiny, easily overlooked company that happens to have the only people who know how to build a particular part, like an actuator or a valve, or the only one who can apply a particular heat treatment or protective coating to someone else's part so it can survive the stresses of flight. It would be easier if the Army was just winding down production of one kind of traditional helicopter and ramping up another. Then industry could build any new parts required in the old way. But Future Vertical Lift is about building new kinds of aircraft in new ways. Even the most traditional-looking competitor, Bell's proposal for the FARA scout helicopter, is being designed, built, and tested using new digital tools. Those tools allow much greater precision and efficiency than traditional blueprints, but only for facilities that have the necessary technology installed. Bell and its rivals, Sikorsky and Boeing, are also all eager to use 3D printing and other advanced manufacturing techniques to improve the performance and reliability of key parts while reducing their cost. That's another set of new technologies that small firms can't easily afford. Will increasing sales of drones help make up the revenue? In addition to the optionally manned FARA scout and FLRAA transport, which will have human crews aboard for most missions, FVL is also building a whole family of completely unmanned aircraft. The major companies can get in on much of that business, Mason said, but some of their smaller suppliers can't. If you build electronics or write flight control software, then. you can work on either manned or unmanned aircraft. But, Mason said, if you specialize in building a particular kind of hardware for manned aircraft, most drones are so much smaller that they use entirely different systems, such electric actuators instead of hydraulics. So for small manufacturing shops, he said, “there's less synergy.” Mason's concerns were well supported by a study of the FVL industrial base by the Center for Strategic & International Studies, released today. “The primes are all in,” said Andrew Hunter, director of defense industrial studies at CSIS, who hosted yesterday's call, “[but] it's a big challenge for those Tier 3 and lower suppliers to make this transition.” During months of workshops with industry, “the concern that we heard expressed repeatedly was lower down the supply chain, [with] Tier 3 and lower suppliers,” Hunter said. “It's an expensive investment that they may be challenged to raise the capital to do, [and] it certainly will involve retraining their workforce to use these new manufacturing techniques.” “Industry has to see they're going to get a return on that investment,” he said. “Even optimistic management who are true believers and think they are definitely going to get a return on this investment because they're going to win [FVL contracts], they've still got to justify it to the banks. They've still got to justify it to their corporate boards.” Changing The Rules What complicates the business case for contractors is that the Army wants a new approach, not just to building the new aircraft, but also to how it keeps them flying. Over an aircraft's decades in service, the long tail of operations, maintenance, and upgrades dwarfs the up-front cost of research, development, and acquisition. While the CSIS study calculated that the Army could afford to build the Future Vertical Lift if budgets remain near historical averages – not guaranteed in the wake of the pandemic – the bigger risk is whether or not the service can control those Operations & Sustainment costs in the long term. Army Futures Command's director for aviation modernization, Brig. Gen. Walter Rugen, said he was confident that extensive physical prototyping and digital modeling would help the service get a handle on those costs. “Our requirements... are still in draft form, so if we need to trade one away to maintain our budgets, we will do that,” he said. “We are going to understand to the greatest degree possible what our O&S costs are and make sure that it's within our budget.” For helicopters, Hunter said, O&S is typically 65 percent of the total cost over the lifetime of a program. Now, not all that money goes to aerospace contractors, since sizable chunk goes to pay military maintenance personnel, buy fuel, and so on. But contracts to sustain existing aircraft are a more important revenue stream for most contractors than actually building new ones. While projected spending on R&D (blue) and procurement (red) rise and fall, remaining under $2.5 billion a year, Operations & Sustainment costs (green) remain largely constant at over $7.5 billion — a crucial source of cash for industry. (CSIS graphic) So any Army effort to economize on operations & sustainment hits contractors where they live. What's more, the Army isn't just trying to squeeze savings out of the existing process; it's changing the rules of the game. Historically, companies could bid low to build a new weapons system because, once they got the contract, they had a de facto monopoly on maintaining and upgrading that system for decades. Now the Defense Department is pushing hard to break this “vendor lock” in two main ways: It's increasingly requiring companies to hand over their intellectual property and technical data. The government can then give that data to potential competitors trying to build cheaper alternatives, as on the Army-run Joint Light Tactical Vehicle program. Second, it's requiring companies to make their products compatible with government standards for how different components fit together physically and connect electronically, with the aim of creating Modular Open System Architectures where you can swap out one company's component and replace it with another vendor's. Developing a common MOSA for all manned and unmanned aircraft is a top priority for the Army's Future Vertical Lift initiative. “Part of what we're doing [over] the next year, year and a half, is the strategy associated with the operational availability, that we want out of these platforms, the intellectual property we want to obtain,” Mason said. “What's the valuation of the IP, the intellectual property? Because intellectual property drives their ability to control the aftermarket, and the aftermarket is where you see the year over year cash flow [that's] critical to most of their business models.” “As you look at Modular Open System Architecture...the business case and the business model associated with it is something that we're working through with industry right now,” Mason said. “It is critical that we have the right incentive structure, it is critical that we provide the right framework so that industry continues to invest and they continue to see a return on that invested capital.” To prevail in future conflicts, “we can't afford not to do Future Vertical Lift,” Brig. Gen. Rugen said. “What this report talks to is national interest we have in preserving the rotorcraft industrial base as we go forward.” https://breakingdefense.com/2020/05/armys-shift-to-fvl-poses-big-risks-for-small-suppliers/
23 juin 2024 | International, Sécurité
Chinese hackers target government agencies worldwide with SugarGh0st and SpiceRAT malware.