13 mai 2022 | International, Naval

Marines to update amphibious ops concept amid uncertainty over future ship count

The commandant wants a Concept for 21st Century Amphibious Operations by the end of the year, after earlier Force Design 2030 modernization efforts have focused on stand-in forces operating as smaller units on smaller vessels.


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  • NFAC Tests Next-Generation Military Helicopter

    11 octobre 2019 | International, Aérospatial

    NFAC Tests Next-Generation Military Helicopter

    Wind Tunnel Test Designed To Validate The Aerodynamic Performance And Flight Mechanics Of Sikorsky's X2 Technology Aircraft The U.S. Army is looking to improve its aviation technology and recently called upon the AEDC National Full-Scale Aerodynamics Complex at Moffett Field in Mountain View, CA, to advance this effort. Engineers from Sikorsky Aircraft Corporation and The Boeing Company, in partnership with the U.S. Army Combat Capabilities Development Command Aviation & Missile Center Army Aviation Development Directorate, recently conducted a series of tests at NFAC to support the development of the SB>1 DEFIANT, a military helicopter being developed for the Army's Joint Multi-Role Technology Demonstrator (JMR TD) program. The goal of this wind tunnel test was to validate the aerodynamic performance and flight mechanics of Sikorsky's X2 Technology aircraft. These configurations, which are being utilized on the SB>1 DEFIANT, include a lift-offset coaxial rotor system, composite fuselage and rear-mounted pusher propulsor that provides increased speed. The SB>1 DEFIANT, which made its first flight in March, is a technology demonstrator for a medium-lift utility helicopter. Future uses of this type of air vehicle could include attack and assault, troop transport or MEDEVAC. The testing was conducted throughout the first half of 2019 and concluded in mid-June. To accomplish the tests, a 1/5 scale model of the SB>1 DEFIANT airframe with powered coaxial main rotors was placed in the NFAC 40- by 80-foot wind tunnel. Measurements included forces and moments on the various components, as well as fuselage, empennage and blade surface pressures. David Wang, NFAC test engineer, said the recent tests expanded on data collected from a JMR wind tunnel entry conducted at NFAC in 2016 by gathering data at faster speed ranges. “From the NFAC perspective, the wind tunnel test was successful,” Wang said. “The test customer was able to collect performance and handling qualities data for their subscale model up to their maximum design flight speed.” Data collected during the recent tests is undergoing review and analysis. It is unknown at this time if there will be future testing of the SB>1 DEFIANT model at NFAC. The full-scale SB>1 DEFIANT flight demonstrator is currently undergoing ground and flight tests at Sikorsky's flight test facility. According to the Sikorsky-Boeing JMR Team, data from SB>1 DEFIANT will help the Army develop requirements for new utility helicopters expected to enter service in the early 2030s. A previous DOD study concluded that upgrades to the aging DOD rotary wing aviation fleet would not provide the capabilities required for future operations. Significant improvement in several attributes of fleet aircraft, such as speed, payload, range, survivability and vertical lift are required to meet future needs. It was determined this improvement could be achieved through application of new technologies and designs. To accomplish its goal, the Army has been executing a science & technology (S&T) effort to mitigate risk associated with maturity of critical technologies, feasibility of desired capabilities and cost of a technical solution. An aspect of this effort is the air vehicle development associated with the JMR TD program. JMR TD is the alignment of Army Aviation's S&T with the Future Vertical Lift initiative, which seeks to develop a new family of system to modernize and replace the government's current fleet of rotorcraft. According to the Army, the intent of the JMR TD is to mitigate risk for the Future Vertical Lift program through means that include the testing of advanced technologies and efficient vehicle configurations. NFAC, managed and operated by Arnold Engineering Development Complex (AEDC), is the largest wind tunnel complex in the world. It consists of both the 40- by 80-foot and 80- by 120- foot wind tunnels. These tunnels, which share a common drive system, are primarily used for aerodynamic and acoustic tests of rotorcraft and fixed wing, powered-lift V/STOL aircraft and developing advanced technologies for these vehicles. Both subscale and full-scale models are tested at NFAC. The speed range of the 40- by 80-foot wind tunnel test section is continuously variable from 0 to 300 knots, while the speed range in the 80- by 120-foot wind tunnel section is continuously variable from 0 to 100 knots. http://www.aero-news.net/index.cfm?do=main.textpost&id=021bcb83-4df9-4253-b7a3-ff3805b7b16a

  • Army looks to a future of integrated fire

    9 octobre 2018 | International, Terrestre

    Army looks to a future of integrated fire

    By: Daniel Cebul WASHINGTON — Even as Army leadership points to the great progress made toward interoperability of missile systems, the future could take that vision one step further. During a Monday panel hosted by Defense News at the Association of the United States Army annual meeting, Col. John Rafferty, director of the Long-Range Precision Fires Cross-Functional Team, said the Army aspires to have “an integrated network, rather than interoperability, which is the work around" in the meantime. "When we get into operational strategic fires we want to extend the systems approach across the fires warfighting function, offensive and defense,” Rafferty added. Tom Karako, director of the Center for Strategic and International Studies' Missile Defense Project, stressed that a more aggressive approach to integrating offensive and defense fires is required to defeat current and future near-peer threats. One area Karako has his eye on “is the degree of integration between Maneuver SHORAD, and frankly the whole rest of ARMY AMD, as well as offensive fires. Making sure that interoperability or integration is common as opposed to being another stovepipe of excellence.” The Integrated Air and Missile Battle Command System (IBCS) is one Army program that will be key to achieving integrated fires. The brains behind the Army's future air and missile defense command-and-control system, IBCS will improve the operational capabilities of current AMD systems like THAAD and Patriot by connecting the former disparate systems. When integrated, the Army can leverage THAAD's AN/TYP-2 radar to extend Patriot's effective range and provide a clearer picture of incoming threats. Discussing the importance of integrated air and missile defenses, Karako said, “just as there is that full spectrum of air and missile threats, we're going to need to have a full spectrum and integration of air and missile defense.” Rafferty and his team have not overlooked the significant investment being made in long-range precision fires. “I definitely feel like we are the number one modernization priority for the Army,” Rafferty said. “I also realize that with the investment comes a sense of cost consciousness because we know that hard choices were made ... across the Army to resource this number one priority.” And while Rafferty's cross functional team is receiving significant funding, the Army knows it has to work as a team to achieve its goals. As explained by Brig. Gen. Alfred Abramson, the program executive officer with PEO Ammunition, the Army has to put their heads together to figure out “where's the juice worth the squeeze in terms of investment." "Can we build a better mouse trap so to speak with some limited dollars, because you can't spread it across everything,” said Abramson, adding that his organization has seen a significant spike of about $2.5 billion for fiscal years 2017 to 2022 funding for ammunition and armament systems products. "At the same time we have a conversation with Col Rafferty's organization about what direction should we be heading. So it really is a discussion across these organizations to make sure everybody is focused on the same thing.” https://www.defensenews.com/digital-show-dailies/ausa/2018/10/08/army-looks-to-a-future-of-integrated-fire


    28 septembre 2018 | International, Naval


    Construction will begin in first half of 2019 WASHINGTON, Sept. 27, 2018 – The U.S. Navy awarded the Lockheed Martin (NYSE: LMT) and Fincantieri Marinette Marine (FMM) team a fixed price incentive fee contract to build an additional Littoral Combat Ship (LCS). LCS 29 will be built in Marinette, Wisconsin, at FMM, the Midwest's only naval shipyard, and is the 15th Freedom-variant LCS ordered by the U.S. Navy to date. The team will leverage capital investment and improvement in the shipyard and efficiencies created with serial production to maintain high quality at an affordable cost. "We are excited to continue our partnership with the U.S. Navy and FMM to build and deliver increasingly capable ships to the fleet,” said Joe DePietro, vice president, Lockheed Martin Small Combatants and Ship Systems. "With the Freedom-variant in serial production, we continue to enhance efficiency, incorporate capability while maintaining ship and program affordability." Since the LCS program's inception, Freedom-variant LCS production has injected hundreds of millions of dollars into local economies throughout the Midwest. The program supports thousands of direct and indirect jobs throughout the United States, including more than 7,500 in Michigan and Wisconsin alone. The Lockheed Martin and FMM team is in full-rate production of the Freedom-variant, and has delivered seven ships to the U.S. Navy to date, including two this year – the future USS Sioux City and the future USS Wichita. There are seven ships in various stages of construction at Fincantieri Marinette Marine. Lockheed Martin's Freedom-variant LCS is highly maneuverable, lethal and adaptable. Originally designed to support focused missions such as mine warfare, anti-submarine warfare and surface warfare, the team continues to evolve capabilities based on rigorous Navy operational testing; sailor feedback and multiple successful fleet deployments. The Freedom-variant LCS integrates new technology and capability to affordably support current and future mission capability from deep water to the littorals. For additional information, visit: www.lockheedmartin.com/lcs. 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. About Fincantieri Marinette Marine Fincantieri is the leading western shipbuilder with a rich history dating back more than 230 years, and a track record of building more than 7,000 ships. Fincantieri Marine Group is the American subsidiary of Fincantieri, and operates three Great Lakes Shipyards: Fincantieri Marinette Marine, Fincantieri Bay Shipbuilding, and Fincantieri ACE Marine. Fincantieri Marine Group's more than 2,100 steelworkers, craftsman, engineers and technicians in the United States specialize in the design, construction and maintenance of merchant ships and government vessels, including for the United States Navy and Coast Guard. About Gibbs & Cox Gibbs & Cox, the nation's leading independent maritime solutions firm specializing in naval architecture, marine engineering and design, is headquartered in Arlington, Virginia. The company, founded in 1929, has provided designs for nearly 80 percent of the current U.S. Navy surface combatant fleet; approaching 7,000 naval and commercial ships have been built to Gibbs & Cox designs. https://news.lockheedmartin.com/2018-09-27-Lockheed-Martin-and-Fincantieri-Marinette-Marine-Awarded-Contract-to-Build-LCS-29

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