Maritime Administration inks a deal for two more multi-mission support ships

Sur le même sujet

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  5 octobre 2020 | International, Terrestre, C4ISR, Sécurité

  Army Inks $1.2 Billion Deal to Equip Strykers with Short-Range Air Defense Weapons

  Military.com | By Matthew Cox The Army just awarded a $1.2 billion contract to General Dynamics Land Systems for Stryker combat vehicles equipped with new short-range air defense weapons. Under the contract, the company will produce, test and deliver Interim Maneuver Short-Range Air Defense (IM-SHORAD) Strykers to the Army, a key modernization effort for the service, according to an Oct. 2 company news release. The IM-SHORAD is designed to counter threats from unmanned aerial systems, as well as enemy helicopter and fixed-wing aircraft, according to the release, which adds that the Army's initial, $230 million order calls for 28 Stryker IM-SHORAD vehicles. "This dedicated SHORAD capability adds a new operational dimension to the Stryker fleet in all of the Army's maneuver formations," Don Kotchman, vice president and general manager of GD Land Systems -- the company that also manufactures Stryker vehicles for the service -- said in the release. General Dynamics has partnered with Leonardo DRS and Raytheon on the deal, which has an estimated completion date of Sept. 30, 2025, according to the release. Air and missile defense is a major modernization priority for the Army as it prepares for future, large-scale conflicts with adversaries such as Russia and China. The IM-SHORAD vehicles will be equipped with Raytheon's Stinger Missiles. The Army is also working to equip Strykers with 50-kilowatt lasers under the Directed-Energy Maneuver-Short Range Air Defense (M-SHORAD) effort. In July 2019, the service selected Northrop and Raytheon to develop competing prototypes of 50-kilowatt laser-equipped Strykers as part of a $203 million deal that includes Kord Technologies as the prime contractor. Northrop and Raytheon will each bring their laser-equipped Stryker to a competitive shoot-off scheduled for the third quarter of fiscal 2021. Army officials plan to select one of the prototypes, which will ultimately be among four vehicles fielded to the first platoon equipped with the 50-kilowatt version of M-SHORAD. https://www.military.com/daily-news/2020/10/02/army-inks-12-billion-deal-equip-strykers-short-range-air-defense-weapons.html

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  17 juin 2019 | International, Autre défense

  Enabling Revolutionary Nondestructive Inspection Capability

  X-rays and gamma rays have a wide range of applications including scanning suspicious maritime shipping containers for illicit materials, industrial inspection of materials and processes, and medical diagnostic and therapeutic procedures. Current technologies, however, are not ideal. X-rays produce a continuum of energies that limit their inspection and diagnostic performance, and gamma rays can only be produced at specific energies unique to a given radioactive isotope. DARPA today announced its Gamma Ray Inspection Technology (GRIT) program. GRIT seeks novel approaches to achieve high-intensity, tunable, and narrow-bandwidth sources of gamma ray radiation in a compact, transportable form factor that would enable a wide range of national security, industrial, and medical applications. A Proposers Day webinar describing the goals of the program is scheduled for July 8, 2019. “What we're trying to do in GRIT is transform the use of x-rays and gamma rays,” said Mark Wrobel, program manager in DARPA's Defense Sciences Office. “Current sources of gamma rays, like Cobalt-60 or Cesium-137, are not very flexible. They require special licenses to possess and only emit gamma rays at very specific energies. What we desire is a source of very high-energy photons that we can tune to match the application we need. This ranges from more effective detection of illicit cargo, to a more informative medical x-ray.” GRIT aims to provide a source of tunable, pure x-rays and gamma rays from tens of keV (kilo-electron volts) up through over ten MeV (mega-electron volts). Currently, tunable and narrow bandwidth gamma ray sources only exist at highly specialized user facilities best suited for basic research and are not able to support broad practical applications. Shrinking these photon sources to a transportable system is a major goal and challenge of the GRIT program. GRIT technology could make possible a range of new inspection and diagnostic protocols. In medical and industrial radiography, for example, GRIT could enable revealing specific elemental and material content, such as calcium in bones or specific metals in cargo. A typical x-ray only shows differences in density in the object being inspected – whether a piece of luggage at an airport, or an individual at a doctor's office. If successful, a GRIT x-ray source could be tuned to detect and quantify the concentration of specific elements of interest, such as the amount of calcium in a given bone x-ray, enabling radiologists to actually see bone composition. Tuning energy between 10s of keV to over 100 hundred keV would allow detection of specific elements that might be of interest in characterizing novel materials and processes at micron scales. These techniques would be relevant to defense applications including non-destruction inspection of novel additively manufactured materials and alloys for their elemental composition. At energy levels in the MeV range, gamma ray photons have high enough energy to actually interact with the nuclei of atoms. Whereas x-rays work by interacting with the shells of atoms, GRIT would be able to stimulate the nucleus of an atom to bring about an effect called nuclear resonance fluorescence, a sort of “fingerprint” that is unique to each isotope on the periodic table. “With GRIT, you could probe and detect specific isotopes of interest by fine-tuning the photon energy to minimize background noise and take advantage of the nuclear resonance fluorescence phenomenon,” Wrobel said. “Those isotopes could be rare-earth elements of interest or special nuclear materials. To be able to definitively say, ‘Yes, there's highly enriched uranium in this object' and be able to characterize how much is present would be a significant leap forward over our current capabilities.” DARPA is seeking expertise in a range of technologies on the GRIT program including advanced accelerator technology, high-energy laser systems, novel control systems, and new x-ray and gamma ray detector technology. To register for the GRIT Proposers Day webinar, visit: https://go.usa.gov/xmh28. GRIT's focus on new, compact photon sources for inspection complements DARPA's Intense and Compact Neutron Sources (ICONS) program, which is developing compact neutron sources. The two technologies would work in tandem, yielding a very robust inspection capability. Caption: The Gamma Ray Inspection Technology (GRIT) program seeks tunable gamma ray sources for a host of national security, industrial, and medical applications. https://www.darpa.mil/news-events/2019-06-14

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  9 septembre 2020 | International, Aérospatial

  Turkey develops AI-based simulator for light fighter jet

  Burak Ege Bekdil ANKARA, Turkey — Turkish Aerospace Industries says it has developed Turkey's first artificial intelligence-based simulator, which will be used in the design and development phases of Hurjet, a locally designed light assault aircraft. TAI said the engineering simulator, Hurjet 270, is designed to collect feedback from test pilots to make the design of Hurjet “better, more solid and more efficient.” The simulator is also meant to detect design faults at the development stage. Company officials said the simulator will feature “human eye-level resolution.” Atilla Dogan, TAI's deputy general manager for aircraft design, told the state news agency Anadolu that Hurjet 270 will help engineers improve designing flight control algorithms and avionics software based on feedback from test pilots. The armed trainer Hurjet is a jet engine version of the turboprop Hurkus, Turkey's first indigenous basic trainer aircraft. TAI launched the Hurjet program in 2018, with a target of having the aircraft's maiden flight in 2022. The Hurjet will have a maximum speed of Mach 1.2 and can fly at a maximum altitude of 45,000 feet. The aircraft will have a maximum payload of 3,000 kilograms, including ammunition, radar and camera. Hurkus-C, the armed version of the base variant of Hurkus, features locally developed ammunition including CIRIT, TEBER, HGK and LGK. It can also use INS/GPS-guided bombs, conventional bombs, non-guided rockets and machine guns. Hurkus-C also features armored body parts, a self-protection system, a data link, laser tacking, an electro-optical and infrared pod, an external fuel tank, and advanced avionics. With a 1,500-kilogram payload that can be used through seven external hardpoints, the Hurkus-C can perform light-attack and armed reconnaissance missions. https://www.c4isrnet.com/artificial-intelligence/2020/09/08/turkey-develops-ai-based-simulator-for-light-fighter-jet/