Corvettes and OPVs: Global Defence Technology 145 - Army Technology

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  1 octobre 2018 | International, Naval

  LOCKHEED MARTIN CONTRACT TO MARRY MACHINE LEARNING WITH 3-D PRINTING FOR MORE RELIABLE PARTS

  U.S. Navy research contract could make complex metal additive manufacturing a reality both in production centers and deep in the field DENVER, Oct. 1, 2018 /PRNewswire/ -- Today, 3-D printing generates parts used in ships, planes, vehicles and spacecraft, but it also requires a lot of babysitting. High-value and intricate parts sometimes require constant monitoring by expert specialists to get them right. Furthermore, if any one section of a part is below par, it can render the whole part unusable. That's why Lockheed Martin (NYSE: LMT) and the Office of Naval Research are exploring how to apply artificial intelligence to train robots to independently oversee—and optimize—3-D printing of complex parts. The two-year, $5.8 million contract specifically studies and will customize multi-axis robots that use laser beams to deposit material. The team will develop software models and sensor modifications for the robots to build better components. Lockheed Martin Metal 3D printer "We will research ways machines can observe, learn and make decisions by themselves to make better parts that are more consistent, which is crucial as 3-D printed parts become more and more common," said Brian Griffith, Lockheed Martin's project manager. "Machines should monitor and make adjustments on their own during printing to ensure that they create the right material properties during production." Researchers will apply machine learning techniques to additive manufacturing so variables can be monitored and controlled by the robot during fabrication. "When you can trust a robotic system to make a quality part, that opens the door to who can build usable parts and where you build them," said Zach Loftus, Lockheed Martin Fellow for additive manufacturing. "Think about sustainment and how a maintainer can print a replacement part at sea, or a mechanic print a replacement part for a truck deep in the desert. This takes 3-D printing to the next, big step of deployment." Currently, technicians spend many hours per build testing quality after fabrication, but that's not the only waste in developing a complex part. It's common practice to build each part compensating for the weakest section for a part and allowing more margin and mass in the rest of the structure. Lockheed Martin's research will help machines make decisions about how to optimize structures based on previously verified analysis. That verified analysis and integration into a 3-D printing robotic system is core to this new contract. Lockheed Martin, along with its strong team, will vet common types of microstructures used in an additive build. Although invisible from the outside, a part could have slightly different microstructures on the inside. The team will measure the performance attributes of the machine parameters, these microstructures and align them to material properties before integrating this knowledge into a working system. With this complete set of information, machines will be able to make decisions about how to print a part that ensures good performance. The team is starting with the most common titanium alloy, Ti-6AI-4V, and integrating the related research with seven industry, national lab and university partners. About Lockheed Martin Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 100,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. This year the company received three Edison Awards for ground-breaking innovations in autonomy, satellite technology and directed energy. SOURCE Lockheed Martin https://news.lockheedmartin.com/2018-10-01-Lockheed-Martin-Contract-to-Marry-Machine-Learning-with-3-D-Printing-for-More-Reliable-Parts

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  7 septembre 2023 | International, C4ISR

  ‘Data fabric’ can help militaries achieve supremacy on the battlefield

  The paper is the result of dozens of surveys conducted over several months with key current and former high-ranking military officials around the globe.

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  10 octobre 2019 | International, Aérospatial

  Embraer Predicts E175-E2 First Flight By Year-End

  Helen Massy-Beresford Brazilian aircraft manufacturer Embraer expects the E175-E2 to make its first flight later this year, with an entry into service for the latest member of its new-generation E-Jets family expected at the end of 2021. Meanwhile, the E195-E2, Embraer's largest commercial aircraft, which offers up to 146 seats and boasts lower operating costs per seat, better fuel consumption and lower emissions, is partway through a global demonstration tour. The tour has just left Europe and is now in North America before heading to Africa next month. “The first prototype of the E175-E2 is being built, and the engine is being hung. We're looking forward to going into service at the end of 2021 and to the first flight at the end of this year,” Martyn Holmes, Embraer Commercial Aviation's VP for Europe, Russia, Central Asia and Leasing, told a press conference at the European Regions Airline Association general assembly Oct. 9. “I think there are great opportunities for the E175-E2 in western continental Europe, I think it will be a great hub feeder. We're stepping up our activity with airlines–watch this space.” As for the E195-E2, following certification by Brazilian, European and U.S. authorities in April, Embraer delivered its first aircraft Sept. 12 to Brazilian low-cost operator Azul, the type's global launch operator, and to lessor AerCap. The E195-E2 is due to enter service with Binter Canarias and Helvetic Airways in the next few weeks. Embraer Commercial Aviation CEO John Slattery also said the manufacturer is considering the turboprop market. “There's absolutely a place in the world for turboprops but the current technology for turboprops is over three decades old,” he said. “I do believe there is an opportunity to significantly improve the operations and the emissions against what's available in the market today in turboprops. “This is something we have been looking at now in earnest for quite some time. We're continuing to spend meaningful dollars in continuing our review. We're always running the ruler over what's next. We're also running the ruler over what should come after the turboprop: What should we be doing on electric hybrid or autonomous travel, for example. There's a role for turboprops, and I'd like to own a piece of that, but we haven't quite closed the business case yet.” Embraer has spoken to operators and lessors in the turboprop segment around the world who “uniformly” see a market for a new-technology turboprop that would yield reduced operating costs and emissions, Slattery added. https://aviationweek.com/crossover-narrowbody-jets/embraer-predicts-e175-e2-first-flight-year-end