7 septembre 2023 | International, Naval

Marines draw inspiration from drug runners for unmanned resupply boat

The Marine Corps is looking at a low-profile unmanned boat to move missiles and weapons around contested areas to resupply forces ashore.

https://www.defensenews.com/naval/2023/09/07/marines-draw-inspiration-from-drug-runners-for-unmanned-resupply-boat/

Sur le même sujet

  • Le missile Air-Air très longue portée russe R37M entrera bientôt en service

    1 octobre 2018 | International, Aérospatial

    Le missile Air-Air très longue portée russe R37M entrera bientôt en service

    FABRICE WOLF Avec plus de 4000 avions de combat modernes de tout type, l'OTAN dispose de la plus formidable force aérienne au monde, très supérieure aux forces russes (1300 appareils) et chinoises (1500 appareils). Consciente qu'elle ne pourra jamais rivaliser numériquement avec cette force, la Russie a développé une stratégie de défense aérienne multi-couches reposant sur des systèmes de défense anti-aérienne à longue, moyenne et courte portée, intégrée dans un réseau global et coordonnant ses actions avec l'importante flotte de chasseurs russes de plus de 800 appareils Su27-30-35 et MIG-29, et les 130 intercepteurs MIG-31. Ainsi organisée, la défense anti-aérienne russe représente un challenge important pour les forces aériennes occidentales, qui doivent utiliser des avions de brouillage ou des appareils furtifs pour espérer garder la supériorité aérienne. Pour articuler cette puissance aérienne, qui représente aujourd'hui 80% de la puissance de feu de l'Alliance selon le British Defense Comittee, l'OTAN déploie un nombre important d'appareils de veille aérienne AWACS, de surveillance électronique, et une flotte massive d'avions ravitailleurs. Le missile à longue portée hypersonique R37M a été développé pour engager et abattre ces appareils, avec une portée supérieure à 300 km et une vitesse supérieure à Mach6. Destiné à équiper les intercepteurs rapides MIG-31 et les chasseurs lourds furtifs Su-57, le R37M permettra de repousser les appareils de soutien de l'OTAN très loin de la zone d'engagement, limitant de fait très sensiblement leurs performances. Un appareil qui, comme le F-35 américain, n'a qu'un rayon d'action de 1000 km, sera ainsi largement contraint s'il doit se ravitailler à 500 km de ses objectifs. En outre, les forces russes auront la possibilité de mener des « raids tactiques », des incursions rapides destinées à porter le danger au plus profond du dispositif adverse, suivi d'un retour rapide dans la zone de supériorité alliée. Au delà des AWACS et ravitailleurs, le nouveau missile menacera donc l'ensemble des appareils lourds de l'alliance atlantique, incluant les avions de transport en charge du train logistique transatlantique indispensable, ainsi que les appareils de patrouille maritime, surtout ceux évoluant à moyenne altitude comme le P8 Poséidon, très exposés dès qu'ils évolueront à moins de 2000 km d'une base aérienne russe. Les mêmes causes ayant les même conséquences, la Chine a elle-aussi développé un missile à très longue portée, estimée à 400 km, et destiné à abattre les appareils de soutien occidentaux. Le nouveau missile, dont la nomenclature est encore floue, a déjà été aperçu sous les ailes des J-11 et des J-16 de l'Armée Populaire de Libération. Ce type de missile n'a pas d'équivalent en Occident. En effet, les forces aériennes chinoises et russes dépendent beaucoup moins des appareils de soutien que leurs homologues occidentaux. En revanche, les états-majors de l'OTAN ont privilégié des missiles d'une portée inferieure, de l'ordre de 150 km, mais très efficaces contre les agiles chasseurs adverses, comme le missile européen Meteor. L'entrée en service du R37M devra donc engendrer une rapide évolution des doctrines aériennes de l'OTAN, comme dans la conception des appareils lourds, qui devront nécessairement être équipés de systèmes d'autodéfense performants capables de détecter, brouiller et leurrer de tels missiles. https://analysedefense.fr/blogs/articles/le-missile-air-air-tres-longue-portee-russe-r37m-entrera-bientot-en-service

  • European Hypersonic Cruise Passenger Study Set For New Tests

    2 août 2019 | International, Aérospatial

    European Hypersonic Cruise Passenger Study Set For New Tests

    By Guy Norris A team of European hypersonic researchers are preparing for wind tunnel tests of a Mach 8 concept that is designed to prove technologies for the development of future ultra-long-range, high-speed commercial vehicles and air-breathing space launch systems. Funded under Europe's Horizon 2020 research and innovation program, Stratofly (Stratospheric Flying Opportunities for High-speed Propulsion Concepts) is targeted at fostering hypersonic capabilities for a 300-seat passenger vehicle cruising above 30 km (19 mi.) to TRL (technology readiness level) 6 by 2035. The project builds on the Lapcat waverider concept developed under earlier programs by the European Space Agency/European Space Research and Technology Center. Using the 310-ft.-long Lapcat II MR2.4 version as a reference vehicle, the 30-month Stratofly effort is focused on classic hypersonic technology challenges such as propulsion integration, hot structures and thermal management. In addition, with environmental concerns at the forefront in Europe, the project also includes sustainability considerations such as fuel-burn efficiency, noise and emissions reductions, as well as operational issues such as life-cycle costs, safety and certification. Coordinated by The Polytechnic University of Turin, Italy, the project team believes that sustainable hypersonic travel is feasible through the use of liquid hydrogen fuel and new trajectories that would enable flights from Europe to Australia in 3 hr. Specific targets include 75-100% CO2 reductions per passenger kilometer and 90% reductions in nitrous oxide (NOx) compared to current long-range transport aircraft. A version of the vehicle could also be adapted into the first stage of a two-stage-to-orbit space launch system, says the group. Other members of the 10-strong consortium include the von Karman Institute for Fluid Dynamics in Belgium, which is focused on propulsion and noise; the Netherlands Aerospace Center, NLR, which is also part of the noise study; and CIRA, the Italian aerospace research center, which is conducting high-speed flow analysis. Propulsion systems and climate impact input is provided by Germany's DLR research organization, while ONERA, the French aerospace research center, is focused on emissions as well as plasma-assisted combustion in the vehicle's combined-cycle propulsion system. Sweden's FOI defense research agency is also part of the plasma combustion study. The French National Center for Scientific Research is also evaluating the vehicle's potential climate impact, particularly in areas such as the effects of water droplets from the exhaust in the upper atmosphere. Studies of the overall business plan, human factors and hypersonic traffic management are being conducted by the Hamburg University of Technology, while the Spain-based Civil Engineering Foundation of Galicia is focused on structural analysis and optimization. Like the original Lapcat design, the Stratofly MR3 waverider configuration is dominated by a large elliptical inlet and an integrated nozzle aft located between two canted tail fins. For takeoff and acceleration up to Mach 4.5, the vehicle is powered by six air turbo ramjets (ATR, also known as air turbo rockets) in two bays of three, each fed by secondary inlets in the primary intake. Above this speed, sliding ramps cover the ATR inlets as the vehicle accelerates and transitions to a dual-mode ramjet/scramjet (DMR) for the next phase of the flight. The DMR is housed in the dorsal section, nested between the ATR ramjets, and is designed to operate in ramjet mode to above Mach 5 and scramjet mode up to Mach 8. The scramjet will incorporate a plasma-assisted combustion system to maintain the stability of the flame front and prevent the potential for flameouts. Tests of the plasma system in a combustor will take place later this year at ONERA, where supersonic combustion testing also took place for Lapcat. The tests will be conducted in November-December at ONERA's ATD5 facility and will focus on inlet conditions at Mach 3.7. Also planned for later this year is a test of the full vehicle in the high-enthalpy wind tunnel at DLR's Gottingen research facility. Testing at DLR will run through September 2020 and is expected to target similar free-stream conditions as those tested on Lapcat II—around Mach 7.8. The work will assess aerothermodynamic characteristics and be used to validate the results of earlier computational fluid dynamics analysis of the MR3 design, which incorporates external and internal differences against the reference vehicle. “We elevated the canard [a retractable feature for lower-speed flight] and redesigned the vertical tails,” says Davide Ferretto, a research assistant on the Stratofly team from The Polytechnic University of Turin. “We also redesigned the leading-edge radius of the inlet for increased efficiency as it feeds both propulsion systems.” As part of the redesign, the enclosed passenger compartment, which was divided into two sections running along each side of the vehicle, has been combined into a single cabin in the lower lobe of the fuselage. https://aviationweek.com/propulsion/european-hypersonic-cruise-passenger-study-set-new-tests

  • Contract Awards by US Department of Defense - November 04, 2019

    5 novembre 2019 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité

    Contract Awards by US Department of Defense - November 04, 2019

    DEFENSE LOGISTICS AGENCY Brothers Produce Inc.,* Friendswood, Texas, has been awarded a maximum $202,500,000 firm-fixed-price with economic-price-adjustment, indefinite-delivery/indefinite-quantity contract for fresh fruits and vegetables. This was a competitive acquisition with one response received. This is a 60-month contract with no option periods. Location of performance is Texas, with a Nov. 3, 2024, performance completion date. Using customers are Department of Agriculture schools. Type of appropriation is fiscal 2020 through 2024 defense working capital funds. The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania (SPE300-20-D-S736). Hesco Bastion Inc., North Charleston, South Carolina, has been awarded a maximum $24,000,000 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for the Expeditionary Barrier System. This is a 10-month, 300-day bridge contract. Locations of performance are South Carolina and the United Kingdom with a Sept. 1, 2020, performance completion date. Using military services are Army, Navy, Air Force and Marine Corps. Type of appropriation is fiscal 2020 defense working capital funds. The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania (SPE8E6-20-D-0001). Frank Gargiulo & Son Inc.,* Hillside, New Jersey, has been awarded a maximum $16,483,500 firm-fixed-price with economic-price-adjustment, indefinite-delivery/indefinite-quantity contract for fresh fruits and vegetables. This was a competitive acquisition with one response received. This is a 54-month contract with no option periods. Locations of performance are New Jersey and New York, with a May 3, 2024, performance completion date. Using customers are Department of Agriculture schools. Type of appropriation is fiscal 2020 through 2024 defense working capital funds. The contracting activity is the Defense Logistics Agency Troop Support, Philadelphia, Pennsylvania (SPE300-20-D-S737). NAVY Bell-Boeing Joint Project Office, Amarillo, Texas, is awarded a $146,039,547 modification (P00025) to a previously awarded cost-plus-fixed-fee, fixed-price-incentive-firm-target and firm-fixed-price contract (N00019-17-C-0015). This modification exercises the option to upgrade nine MV-22 aircraft from the Block B to the Block C configuration, as well as planned maintenance intervals for eight MV-22 aircraft, in support of the Common Configuration-Readiness and Modernization (CC-RAM) program. Work will be performed in Ridley Park, Pennsylvania (91%); and Fort Worth, Texas (9%), and is expected to be completed in March 2022. Fiscal 2018 and 2020 aircraft procurement (Navy - AP, N); and fiscal 2020 operation and maintenance (Navy – OM, N) funds in the amount of $146,039,547 will be obligated at time of award, $6,049,632 of which will expire at the end of the current fiscal year (Funding: fiscal 2018 AP, N $5,654,683; fiscal 2020 AP, N $139,989,915; and fiscal 2020 OM, N $394,949). The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity. Lockheed Martin Space, Titusville, Florida, is awarded a $40,304,886 cost-plus-incentive-fee and cost-plus-fixed-fee modification (P00002) to exercise options under a previously awarded contract (N00030-19-C-0100) for TRIDENT II (D5) missile production and deployed systems support. Work will be performed in Denver, Colorado (28%); Sunnyvale, California (25.2%); Biddeford, Maine (14.7%); Cape Canaveral, Florida (12.5%); Clearwater, Florida (9.8%); Oak Ridge, Tennessee (4.4%); Scottsdale, Arizona (2.2%); and other various locations (less than 1% each, 3.2% total). Work is expected to be completed Sept. 30, 2024. Fiscal 2020 weapons procurement (Navy) funds in the amount of $32,016,540; and fiscal 2020 other procurement (Navy) funds for $8,288,346 are being obligated on this award, none of which will expire at the end of the current fiscal year. This contract was awarded to the contractor on a sole source basis under 10 U.S. Code 2304(c)(1) and was previously synopsized on the Federal Business Opportunities website. Strategic Systems Programs, Washington, District of Columbia, is the contracting activity. The Boeing Co., St. Louis, Missouri, is awarded a $34,230,269 firm-fixed-price delivery order (N00019-20-F-0331) against a previously issued basic ordering agreement (N00019-16-G-0001). This order provides for the non-recurring engineering, logistics product data, 28 Group A-1 retrofit kits, 28 Group A-2 retrofit kits, and 28 Group B retrofit kits for incorporation of the Distributed Targeting Processor-Network into the F/A-18 aircraft for the Navy and the Government of Australia. Work will be performed in St. Louis, Missouri (99%); China Lake, California (0.5%); and Whidbey Island, Washington (0.5%), and is expected to be completed in June 2022. Fiscal 2019 aircraft procurement (Navy) funds in the amount of $33,816,097; and Foreign Military Sales funds in the amount of $414,172 will be obligated at time of award, none of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity. Lockheed Martin Corp., Orlando, Florida, is awarded a $20,700,000 firm-fixed price contract for the design, fabrication, procurement, delivery, installation, integration, configuration, technical documentation, test, modernization and concurrency of the Littoral Combat Ship Freedom Variant Integrated Tactical Trainer devices installed at Naval Station Mayport, Florida; and Naval Station San Diego, California. Work will be performed in Orlando, Florida (51%); Moorestown, New Jersey (35%); Baltimore, Maryland (8%); Clearwater, Florida (3%); and Marion, Massachusetts (3%), and is expected to be completed in March 2022. Fiscal 2019 other procurement (Navy) funds in the amount of $20,700,000 will be obligated at time of award, none of which will expire at the end of the current fiscal year. This contract was not competitively procured pursuant to U.S. Code 2304(c)(1). The Naval Air Warfare Center Training Systems Division, Orlando, Florida, is the contracting activity (N61340-20-C-0003). Sikorsky Aircraft Corp., Stratford, Connecticut, is awarded a $20,324,973 modification (P00272) to a previously awarded cost-plus-incentive-fee contract (N00019-06-C-0081) to provide System Demonstration Test Article Aircraft (SDTA) to support various test requirements under the System Development and Demonstration (SDD) program. The purpose of this contract modification is to definitize the costs associated with the instrumentation and transition of the aircraft between SDD and SDTA. Work will be performed in Stratford, Connecticut, and is expected to be completed in February 2021. No funding is included in this contract modification; this requirement will be incrementally funded. The Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity. ARMY High Desert Support Services, Alexandria, Virginia, was awarded a $30,000,000 modification (P00019) to contract W9124B-18-C-0004 for installation support services. Work will be performed in Fort Irwin, California, with an estimated completion date of Oct. 31, 2020. Fiscal 2020 operation and maintenance, Army funds in the amount of $2,968,096 were obligated at the time of the award. U.S. Army Mission Installation Contracting Command, Fort Irwin, California, is the contracting activity. (Awarded Oct. 31, 2019) *Small Business https://www.defense.gov/Newsroom/Contracts/Contract/Article/2008047/source/GovDelivery/

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