28 septembre 2018 | International, Aérospatial

ADS Show : Thales avance sur la maintenance prédictive

Par Emmanuel Huberdeau

Thales présente au salon ADS Show un outil expérimental pour la maintenance prédictive.

Depuis plusieurs mois, les équipes de Thales développent un outils expérimental de maintenance prédictive destiné à anticiper les pannes et les réparations sur les systèmes électroniques.

Ce système de maintenance prédictive se nourrit de données récoltées par les utilisateurs, les responsable des réparations et les industriels. Un algorithme calcul ensuite les probabilités de panne de chaque équipement. L'outil peut ainsi identifier la probabilité qu'un matériel tombe en panne sur une période donnée et anticiper les pannes. L'utilisateur peut ainsi gérer sa flotte en opération en fonction de ces chiffres mais aussi optimiser sa logistique.

Plus le volume de données est important plus les résultats de l'outil sont précis. C'est pourquoi Thales cherche a obtenir plus d'informations encore via l'intégration de capteurs dit HUMS capables d'enregistrer les paramètres liés à chaque équipements. Thales annonce être le premier industriel a développer des outils de maintenance prédictive pour des systèmes électroniques.

Pour mener ses expérimentations, Thales s'est basé sur des équipements embarqués sur le Rafale. Les essais ont démontré une capacité du système à prévoir huit pannes sur dix.

Les expérimentations ayant porté leurs fruits, Thales prévoit désormais de présenter mi 2019 un système industrialisé. Celui-ci pourra alors servir de base pour développer une interface homme-machine adaptée aux besoins des militaires français. Outre le Rafale, Thales pense pouvoir appliquer son outils de maintenance prédictive dans un premier temps à l'ATL2 et à l'hélicoptère Tigre.

http://www.air-cosmos.com/ads-show-thales-avance-sur-la-maintenance-predictive-115353

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    22 juin 2023 | International, Aérospatial

    Leonardo up-guns its M-346 fighter, teams with Airbus on trainer sales

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  • Japan Accelerates Its Defense Buildup

    14 janvier 2019 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité

    Japan Accelerates Its Defense Buildup

    by Milton Ezrati Tokyo will begin to alter the security equation in the Western Pacific in the not-too-distant future. Long pacifist, Japan has decided to accelerate its military spending and effectively begin to gear up. It should hardly come as a surprise. Though Prime Minister Shinzo Abe has long sought to shift Japan from pacifism to what he calls a “normal country,” North Korea's missiles and China's aggressiveness in the Pacific would have left Tokyo little choice anyway. Spending has stepped up dramatically, as has planning. The nature of the buildup responds to other pressures from its great ally, the United States, which wants Japan to buy more U.S. equipment, as well as from the demographic and technological imperatives facing that nation. Even now, some seventy-two years after Douglas MacArthur directed the writing of the then defeated Japan's constitution, the document still limits the country's room to maneuver. Spending cannot exceed 1.0 percent of gross domestic product (GDP). Though clever accounting allows wiggle room, this rule nonetheless imposes a severe constraint especially next to China and the United States, each of which spend more than 3.0 percent of their much larger GDPs on defense. Because the constitution stresses defense exclusively, it naturally questions any preparation to project power, not the least the Ministry of Defense's (MoD) intention to construct two aircraft carriers and possibly base Japanese ground forces outside the country. The constitution also forbids Japan entering any mutual defense pact. Despite Japan's long-term alliance with the United States, it cannot go to America's aid if, for instance, a U.S. base in Asia was attacked. Prime Minister Abe has strived to change the constitution and has won concessions, but it remains a constraint. The MoD budget requests for 2019 nonetheless make clear the new military emphasis. According to documents published in September, the MoD is asking for ¥5.3 trillion ($48 billion) in overall defense outlays, which is 7.2 percent above the 2018 budgeted amount. A jump like that would be noteworthy in any country, but especially so in Japan, where heretofore defense spending grows by fractions of a percent per year. Five-year plans would sustain this heightened level of spending. Still more interesting is the proposed allocation of these funds. Here, each point reflects the various pressures on Japan. North Korea's presence is probably most evident. The budget document emphasizes on “deterrence,” which no doubt lies behind the decision to upgrade the electronic warfare capability of Japan's existing F-15 fighter jets and purchase six F-35A fighters from Lockheed Martin. New plans call for purchases of 147 of these new fighters over the next few years, well above the original plan to buy forty-two of them. U.S. pressure is also clearly evident in this decision, as it will preclude purchase of the domestically developed F-2 fighter. In the words of one Japanese security analyst, Masahiro Matsumura, Japan's “defense industry is being sacrificed for the political goal of maintaining good Japan-U.S. relations.” Less controversial but also clearly aimed at the North Korean threat, the budget calls for Japan to upgrade its airborne early warning capability and spend nearly ¥300 billion ($2.7 billion) to deploy two land-based Aegis missile defense systems (“Aegis Ashore”) and other U.S. manufactured missile interceptors. Measures to counter China, at sea mostly, make a longer list. Of course, the F-15 upgrades and the new F-35s constitute something of an answer to China. More pointed are MoD plans to procure RQ-40 Global Hawk long distance drones, fund research to develop a long-distance undersea unmanned surveillance device, and otherwise enhance naval heft by procuring more anti-air missile and anti-torpedo ammunition as well as more standoff missiles. Plans also call for the construction of a new submarine, aimed, in the words of MoD budget documents, at “detections, etc.” (The etcetera no doubt refers to offensive capabilities that might raise constitutional questions.) Japan also has plans to construct two new multipurpose, compact destroyers that can also sweep mines. They will bring the fleet escort force to a total of fifty-four vessels—a considerable upgrade from the past. More controversial from a constitutional standpoint are other efforts that would: 1) enable the military to project power and 2) obligate Japan to its allies. The MoD seeks to procure a tanker to support the navy at sea, a clear statement that Japanese naval power has gone beyond coastal defense. The ministry also seeks two new C-2 transport aircraft and six more UH-X helicopters specifically aimed at rapid deployments. Also, it seeks a training budget to ready Japanese ground forces for more distant deployments. The ministry also seeks to refit an existing helicopter carrier over the next few years to carry some of the new F-35 fighters and then build a second carrier. In some interpretations, this clearly violates the self-defense strictures in Japan's constitution, though the prime minister and the MoD have couched the requests in defensive terms. In what also might constitute a further violation of the constitution, the ministry has asked for concessions to allow greater integration of Japanese command, control, and planning with allies, the United States, obviously, but also India, Australia, and ASEAN, in other words those nations trying to check Chinese expansion. Beyond these obvious countermeasures to North Korea and China, the MoD has also emphasized the need for modernization. It has set aside funds to establish what in the United States might describe as a cyber-defense command and to investigate the military use of artificial intelligence (AI). In a similar vein, the ministry has dedicated development funds to eventually install protections for Japan's satellites, including an optical telescope with which to identify objects flying nearby. It has further dedicated a not insignificant ¥2.7 billion ($24 million) to work with the United States on what it calls “deep space international awareness.” Not only do these efforts capture further needs, but the budget document emphasizes that the military will help Japan cope with its long-prevailing low birth rate and the resulting shortfall in people who meet the military's age requirements. One other aspect of this effort is the ministry's remarkably un-Japanese push to put more women into uniform. Even if not every yen makes it to its designated place, it is apparent that Japan will begin to alter the security equation in the Western Pacific in the not-too-distant future. If Abe manages to alter the constitution as planned, then the change will no doubt occur at an accelerated pace. It will alter Washington's calculations. Beijing surely will also take note. Milton Ezrati is a contributing editor at the National Interest , an affiliate of the Center for the Study of Human Capital at the University at Buffalo (SUNY), and chief economist for Vested, the New York based communications firm. His latest book is Thirty Tomorrows: The Next Three Decades of Globalization, Demographics, and How We Will Live . https://nationalinterest.org/feature/japan-accelerates-its-defense-buildup-41277

  • Boeing’s future attack recon helicopter has no name but 3 rotor systems

    4 mars 2020 | International, Aérospatial

    Boeing’s future attack recon helicopter has no name but 3 rotor systems

    By: Jen Judson WASHINGTON — After dropping a brief teaser trailer several weeks ago on social media with split-second glimpses of shadowy outlines of its offering to the U.S. Army' Future Attack Reconnaissance Aircraft competition, Boeing prompted plenty of speculation on its design. The company has kept its FARA design close to its vest since receiving a small design contract from the Army. The company even held a 30-minute press briefing at the Association of the U.S. Army's annual conference in October 2019 where it told reporters they wouldn't be unveiling anything just yet. Boeing finally went public on March 3 just ahead of the Army choosing two competitors from a pool of five to move forward to build a flying prototype with the intent of picking a winner at the end. The service is expected to make its selection some time this month. Boeing is the last of those competitors to reveal its hand. That helicopter is simply being called “Boeing FARA,” and its clean-sheet design features a hingeless, six-bladed, high-solidity main rotor; a four-bladed conventional tail rotor; and a propeller on the back, Shane Openshaw, Boeing's FARA program manager, told a small group of reporters ahead of the company's March 3 unveiling. “That main rotor is purpose-built for this particular aircraft,” Openshaw said. “Think of it as the means to provide the agility and maneuverability that this aircraft requires.” The tail rotor will give the aircraft the maneuverability characteristics at lower speeds of a more typical helicopter, Openshaw said, and the propeller “will give it the the speed and maneuverability that is needed to support the FARA requirements.” Some of the “nuances that occur with an articulated rotor system” will not be experienced with the Boeing FARA design, he added. For instance, the design eliminates high rotor blade flapping. The Army is requiring that FARA reach a cruise speed of at least 180 knots at 4,000 feet in 95 degree temperatures. Openshaw added that the helicopter also features a Modular Open Systems Architecture, or MOSA, required for the FARA program and takes sustainment into account through a maintenance-friendly design using common Army equipment and components. The Army wants all designs to be able to accept its Improved Turbine Engine Program's engine, which is currently under development and built by General Electric. The service also wants to incorporate an integrated munitions launcher it has internally developed. Every design must incorporate the Army's MOSA backbone to be able to upgrade the aircraft into the future, which means the aircraft has to be able to accept capabilities with very little tweaking in order to combat threats not yet on the horizon. The Boeing FARA design also features a single-engine aircraft with tandem cockpit seating. “We did not go into this effort with our mind made up on what our approach was going to be,” Openshaw said. “We went through an array of trades and prioritization efforts to define our solution, and it is purpose-built for the Army. It will have the right kind of capabilities to make it a key element of their vision of the ecosystem, and it will be capable, simple and effective.” Competition Boeing is using its experience in model-based systems engineering, specifically what was used for its winning advanced trainer jet design for the Air Force — the T-7 Red Hawk — and also the MQ-25 Stingray aerial-refueling unmanned aircraft system for the Navy, according to Mark Cherry, general manager and vice president of Boeing Phantom Works. FARA was specifically designed in the Phantom Works division of the company. “It's a legacy that gives us an assurance that we're going to be able to meet prototyping requirements at the schedule that the Army is looking for,” Cherry said. Along with that, he noted, Boeing is paying close attention to life cycle costs and is using its “extensive background in design testing to ensure that we have the data that supports our analysis to ensure that the Army understands what we're providing, and more importantly, all of the parameters, so they can make their evaluations on the right capability for their needs.” FARA is intended to fill a critical capability gap currently filled by AH-64E Apache attack helicopters teamed with Shadow unmanned aircraft following the retirement of the Bell-manufactured OH-58D Kiowa Warrior helicopters. Boeing is competing with AVX Aircraft Co. partnered with AVX Aircraft partnered with L3 Technologies; Bell Helicopter; a Karem Aircraft, Northrop Grumman and Raytheon team; and Lockheed Martin-owned Sikorsky. The Army awarded each a design contract in April 2019. The AVX and L3 team unveiled its design for FARA at the Army Aviation Association of America's annual summit in Nashville, Tennessee, in April 2019. The single-engine design uses AVX's compound coaxial and ducted fans technology. Bell revealed its design — the Bell 360 Invictus — based off its 525 technology shortly before the AUSA annual conference last year. It features a single main rotor in a four-blade configuration and a low-drag tandem cockpit fuselage. Karem announced it would team with Northrop and Raytheon and came out with its design at AUSA — its AR-40 — with a single main rotor, tilting compound wings and a rotating tail rotor. Sikorsky's offering — Raider X — is based on both its X2 coaxial technology seen in its S-97 Raider and the Sikorsky-Boeing-developed SB-1 Defiant, which are now both flying. Raider X is already under construction. The Army continues to look for ways to accelerate FARA fielding and is on an ambitious schedule to get prototypes flying by 2023. A production decision could happen in 2028. Much is riding on the competition. The service has tried and failed three times to fill the armed reconnaissance gap with an aircraft. The Boeing-Sikorsky RAH-66 Comanche program was one of those attempts. The program was canceled in 2004 after the Army had already spent roughly $7 billion when the aircraft became unaffordable. Boeing had offered a version of its AH-6 Little Bird for the most recent Armed Scout Helicopter competition attempted in 2012. This time the Army didn't want to get locked into keeping inflexible requirements, but did request that aircraft have a maximum 40-foot-rotor diameter. The Army will consider speed, range and payload possibilities, but wants to encourage innovation by industry for designs that push the envelope and make FARA a true next-generation aircraft that can contribute to the fleet for the good part of a century. https://www.defensenews.com/land/2020/03/03/boeings-future-attack-recon-helicopter-has-no-name-but-3-rotor-systems

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