19 juillet 2019 | International, Terrestre, Autre défense
By Matthew Cox
Army modernization officials are getting help from the Navy to make the service's High Energy Laser program more than twice as powerful for fending off aerial attacks from swarms of enemy drones.
Currently, the Army's High Energy Laser Tactical Vehicle Demonstrator (HEL TVD) features a 100-kilowatt laser designed to fit on Family of Medium Tactical Vehicle (FMTV) trucks. The service plans to conduct a demonstrationof the system's target acquisition, tracking and other capabilities against a range of targets in 2022.
Meanwhile, the Army's Rapid Capabilities Office plans to take advantage of the Navy's 250-kilowatt laser program, a system that could be adapted to fit on the FMTV platform, Army Lt. Gen. Paul Ostrowski told an audience Tuesday at an Association of the United States Army Institute of Land Warfare breakfast.
"The intent is to work with the Navy, and we are doing that right now, in order to increase the power of that laser system from beyond 100-kilowatt up to maybe the 250-kilowatt mark," said Ostrowski, the military deputy to the assistant secretary of the Army for acquisition, logistics and technology.
The Army's 100-kilowatt HEL TVD is being designed to provide air and missile support to forward operating bases and airfields, Ostrowski said. The service also plans to field a platoon of four 50-kilowatt lasers, known as Maneuver Short Range Air Defense (M-SHORAD) that will be mounted on a Stryker combat vehicle in fiscal 2022.
The advantage of the laser is having an "unlimited magazine" for unmanned aerial systems, as well as rockets, artillery and mortars, instead of "shooting $100,000 missiles at $7,000" unmanned aerial systems, Ostrowski said, adding that the Army hopes to expand the potential use of lasers on the battlefield beyond air defense.
"We want to be able to put that capability on our tanks to potentially get after targets that our combat vehicles can go after, so this is just the beginning ... of where we see lasers going in the future," he said.
One of the challenges of working with lasers, Ostrowski said, is controlling the heat buildup generated by the power source.
"It's not just the ability to create the energy to fire the laser, but it's also to dissipate the heat," he said.
It's still uncertain whether the Navy's 250-kilowatt laser program will work for the Army, but "we are not going to ignore" its potential for dealing with more complex enemy air attacks, Ostrowski said.
"The power piece is extremely important. If you don't have the power, you don't have that unlimited magazine, and that unlimited magazine makes a difference in a swarm environment where you have multiple targets and you have to be able to ... recharge quickly and be able to shoot them all down," he said.
2 juin 2024 | International, Aérospatial
The service may launch a "transitional" capability to MEO by 2031 if those satellites can work with existing terminals without needing major modifications.
20 août 2019 | International, Aérospatial
By Heather Wilburn, Fleet Readiness Center Public Affairs MARINE CORPS AIR STATION CHERRY POINT, N.C. (NNS) -- A recently-completed facility will bring a new strategic capability to Fleet Readiness Center East (FRCE) and the F-35B Lightning aircraft line next year. When the new F-35 laser shock peening facility is fully operational in 2020, FRCE will be one of two sites in the world that will use laser technology to strengthen F-35 structural components. Construction of the $6 million facility wrapped in July, and the contractor providing the laser shock peening service will take occupancy in early spring, said Donald Jeter, portfolio manager of the F-35 aircraft line at FRCE. Under that timeline, the first F-35 aircraft inducted for laser shock peening would arrive in June to undergo the validation and verification process, and then the depot will begin work on the remainder of the F-35 fleet that requires the laser shock peening modification. “This facility is a big get for Fleet Readiness Center East,” Jeter said. “It's very exciting. Being able to perform this laser shock peening process adds a huge strategic capability to our depot. With it, we'll be able to provide a critical support element to the F-35B program and act as a force multiplier for the fleet and the warfighter.” The 16,000-square-foot facility comprises two bays, where the actual laser shock peening process will take place, and a connected area that will house the laser generator. The state-of-the-art laser shock peening process will allow FRCE to conduct heavy structure modifications that will strengthen areas of the F-35's airframe without disassembling the entire aircraft, said Matthew Crisp, the F-35 Joint Program Office site lead at FRCE. The process strengthens designs without adding additional metal or weight, which increases the aircraft's life and reduces maintenance costs. It has been used on the F-22 Raptor and in manufacturing aircraft components including engine blades, Crisp said, but has never been employed for the F-35. Now, FRCE will use the technology to help Marine Corps aircraft reach their full life limit. Aircraft maintenance professionals at FRCE will conduct prep work and some structural modification on the F-35s inducted into the depot, then turn them over to the contractor running the laser shock peening operations. The contractor will complete the process to strengthen the bulkheads and airframes, and FRCE will put the jets back together, perform all the flight test functions and get them back out to the fleet, Jeter said. The end result is aircraft that have been reinforced without adding additional weight, which would reduce the fighter's capabilities by limiting its fuel or weapons carrying capacity. Shot peening is not a new process, Crisp said, but laser shock peening is unique in that it produces a uniform result across the surface being treated. In laser shock peening, the surface of the media is first coated with an ablative layer and covered with a water tamping layer. A high-energy laser beam is fired at the metal, which creates an area of plasma on the metal's surface. The impact creates a shock wave, which travels through the metal, and compressive residual stresses remain. This compression helps improve the metal's damage tolerance, fatigue life and strength. “(Shot peening) has been done for decades,” he explained. “It's where you take a solid media, like glass beads or some kind of metal, and you hit the surface of an item – kind of like sandblasting. You just randomly throw it at the surface, and it creates all these surface dimples. What you get is a very inconsistent surface profile, because it's not controlled.” With laser shock peening, the process is very controlled, Crisp said. “They create a laser beam that's actually square, and the intensity is consistent across the entire laser beam – it's the exact same at the very edge of the beam as it is in the middle,” he said. “They come up with a grid pattern and stack the squares up right beside each other, so the entire surface of the part is completely uniform. You don't have the weak spots in between these areas that would then induce cracking later.” Jeter said he expects laser shock peening to be a main focus of the F-35 line for the next four to five years. Once the first two aircraft have undergone the validation and verification process, it will be a sprint to the finish to complete modifications on the remainder of the F-35B fleet that requires this treatment. “After that val/ver event, the aircraft will basically be nose-to-tail,” Crisp added. “We'll completely fill every aircraft stall that's here, and for the next five years, when one leaves another will come in. That's critical, because this process has to be done on every single airplane that requires it.” The workload does not include every F-35 ever produced, although it does include B and C models, and also encompasses F-35 aircraft owned by partner nations. FRCE will focus solely on the B variant, while Ogden Air Force Base in Utah will work on the F-35C models and take any F-35B overflow. After the first round of laser shock peening modifications, what comes after that is still to be determined, Crisp said. “I'm sure there will be some follow-on work,” he said. “And beyond the F-35 program, this is a little bit exciting, because this really is cutting-edge technology and we have it here at FRCE. I think maybe within the engineering community here, as people find out more about it, they may open additional discussions about how we could implement this on other aircraft lines. We might find a future capability we want to look at.” FRCE is North Carolina's largest maintenance, repair, overhaul and technical services provider, with more than 4,200 civilian, military and contract workers. Its annual revenue exceeds $720 million. The depot generates combat air power for America's Marines and Naval forces while serving as an integral part of the greater U.S. Navy; Naval Air Systems Command; and Commander, Fleet Readiness Centers. https://www.navy.mil/submit/display.asp?story_id=110618
25 juin 2019 | International, Naval
By Ed Adamczyk June 24 (UPI) -- Lockheed Martin's Rotary and Missions Systems division received a $16.2 million contract to build elements of Virginia-class submarines, the Defense Department announced. The company will manufacture multifunction modular masts for the submarines' Block V hull, which can be extended by sections, depending on the requirements of the vessels' strike capabilities. Virginia-class submarines with Block V armaments are capable of carrying Tomahawk cruise missiles. The vessels typically carry eight masts, which include a snorkel mast, two photonic masts as replacements for periscopes, high-data-rate satellite communication masts, a radar mast and an electronic warfare mast. The contract was competitively procured through the Federal Business Opportunities website and announced on Friday. It specifies options which can boost it value to $97.8 million. Work on the contract will be done at Lockheed Martin facilities in Nashua, N.H., and Syracuse, N.Y., and is expected to be completed by June 2020. If all options are exercised, the deadline will be extended to June 2024. The Naval Sea Systems Command at Washington Navy Yard in Washington, D.C., was the contracting agent. https://www.upi.com/Defense-News/2019/06/24/Lockheed-nets-162M-contract-for-Virginia-class-sub-masts/1891561390409/