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March 3, 2020 | International, Aerospace, Naval

Des Rafale de la Marine nationale s’équipent de pièces imprimées en 3D

Un Rafale de la Marine nationale vient d'effectuer son premier vol avec une pièce imprimée en 3D avec succès : dessinée et prototypée sur le porte-avions Charles de Gaulle, la pièce est un boîtier de commande de vidanges des réservoirs de carburant. C'est une première pour la marine qui peut ainsi compter sur la fabrication additive pour concevoir des pièces détachées rapidement et proposer diverses itérations à moindre coût. Le composant final a été imprimé en 3D par Dassault Systèmes et pourrait bien être le premier d'une longue série.

En février 2019, le porte-avions Charles de Gaulle s'équipait d'une imprimante 3D, probablement d'une machine de bureau à dépôt de matière fondue, afin de concevoir toutes sortes d'objets pour dépanner l'équipage parti en mission. Un ravitaillement ou une réparation en pleine mer est très coûteux et long, un temps que les techniciens de la Marine nationale ne peuvent parfois pas s'offrir. La fabrication additive pourrait être une première solution : en ayant une imprimante 3D à bord du porte-avions, son équipage produirait ce dont il a besoin sur place, s'affranchissant de nombreuses contraintes.

La Marine nationale possède aujourd'hui 40 Rafale, dont 28 en ligne. C'est aujourd'hui l'avion de combat le plus moderne en service sur le territoire français. L'Etat-major des armées (EMA) explique qu'une équipe de techniciens de la Marine nationale a proposé d'utiliser l'imprimante 3D à bord du porte-avions Charles de Gaulle pour imaginer différentes pièces détachées intégrées à leur Rafale. Ils ont donc dessiné une maquette de renfort qui a ensuite été imprimée en 3D sur le bateau directement. L'EMA ajoute : “Le projet est immédiatement retransmis à la Direction de la maintenance aéronautique pour analyse au sein du plateau technique central mis en place dans le cadre du premier marché verticalisé de la flotte et rassemblant les spécialistes étatiques et industriels du domaine.” Le marché évoqué concerne le contrat RAVEL obtenu en mai 2019 par Dassault Aviation et ce pour une durée de 10 ans. Celui-ci a notamment pour objectif d'assurer l'entretien des Rafale, une assistance technique et une meilleure gestion des stocks.

Après quelques jours d'études, le modèle imprimé sur le porte-avions a été adapté afin que le groupe Dassault puisse imprimer en 3D un produit fini. On ne sait pas quels matériaux et technologie ont été utilisés mais les pièces auraient été montées sur l'ensemble des Rafale embarqués dans le cadre de la mission Foch qui a débuté le 22 janvier dernier. La direction de la maintenance aéronautique (DMAé) conclut : « L'endommagement d'un aéronef en mer étant plus sévère qu'à terre, il revient à la DMAé de calculer et d'anticiper les besoins des différents aéronefs embarqués pour soutenir au mieux les équipes du porte-avions dans leur travail quotidien. »

La fabrication additive pourrait donc répondre à ces objectifs et aider les équipes à concevoir des pièces détachées plus rapidement et efficacement. On espère que d'autres Rafale pourront être équipés de pièces imprimées en 3D ! En attendant, vous pouvez retrouver davantage d'informations ICI.

https://www.3dnatives.com/rafale-marine-nationale-impression-3d-03032020/

On the same subject

  • Pentagon Pumps $3B Into Industry As COVID-19 Delays Loom

    April 21, 2020 | International, Aerospace, Naval, Land, C4ISR, Security

    Pentagon Pumps $3B Into Industry As COVID-19 Delays Loom

    PENTAGON: The Pentagon's acquisition chief today said she expects major defense programs to be delayed by around three months due to COVID-19 closures and disruptions, while DoD rushes to pump $3 billion into the defense industry to bolster programs at greatest risk. Speaking to reporters here this morning, Lord said she expects to have to ask the White House and Congress for “billions” more to reimburse contractors affected by work delays and broken supply chains. “We believe it will cost us something,” she said, declining to get any more specific than “billions” of dollars. The months-long delays to programs will likely be spread throughout the defense industry as small parts suppliers shut down operations for days or weeks at a time. “We're looking at schedule delays and inefficiencies and so forth: this isn't about a particular program.” Lord singled out “a slowdown in the shipyards, to an extent. Aviation is actually the most highly impacted sector we have right now.” It's unclear what programs are at highest risk, but the Navy has been bullish on speeding up its new frigate program to award contracts some time this summer. If work slowdowns continue, that could be pushed further down the road. The Army and Navy have also been moving ahead on their nascent hypersonic weapons program, with a series of critical tests planned this year. Lord pointedly suggested that large defense companies need to start pushing more money into their supplier base to ensure small parts suppliers don't go out of business, further impacting new programs and ongoing maintenance efforts. She did praise Lockheed and Boeing for increasing cash flow to lower-tier suppliers, then not-so-subtly says, she is “hoping for similar public announcements from other major primes.” Last month, Lockheed said it would advance more than $100 million to suppliers hurt by the slowdown, and this week Boeing said it was reopening the Philadelphia-area facility where it makes the Chinook, the V-22 Osprey and other helicopters. The Pentagon is starting to award higher progress payment rates this week, pumping $3 billion dollars in increased cash flow to industry. “We try to anticipate the problems and work with the companies to keep going to the greatest degree possible,” Lord said. As part of that effort, DoD's first priority is the modernization process of the nuclear triad, she said: “we look at the Missile Defense Agency, we look at the critical capabilities. We're looking where the greatest pain points are.” While she singled out Lockheed and Boeing, shipbuilder Huntington Ingalls is making a push to speed up contracts and get money into the hands of sub-tier suppliers early, in order to ensure companies way down the supply base food chain can continue chugging along. In a recent interview, company representatives told me they've reached out to over 2,000 suppliers in 48 of the 50 US states. “We need their products today, but we also need them in 90 days, so we want to help them brave the storm,” said Lucas Hicks, vice president of new construction aircraft carrier programs. “We've actually changed some payment terms on some of our supplier contracts to try to make sure that we can front them what they need to stay afloat. We're doing some creative stuff to try and help them be able to weather the storm.” The Department's efforts to backstop the defense industrial base while taking steps to protect its workforce and purchase critical protective clothing like facemasks is still in its relative stages, despite the COVID-19 pandemic having been with us for months. “We are just really beginning to pick up momentum,” Lord said. https://breakingdefense.com/2020/04/pentagon-pumps-3b-into-industry-as-covid-19-delays-loom

  • Navy Exploring Options for Multi-Engine Training Aircraft to Replace T-44

    May 29, 2020 | International, Aerospace, Naval

    Navy Exploring Options for Multi-Engine Training Aircraft to Replace T-44

    Posted on May 28, 2020 by Richard R. Burgess, Senior Editor ARLINTON, Va. — Naval Air Systems Command is looking at options for an aircraft to replace the T-44C Pegasus multi-engine training aircraft, but the ultimate choice may not be “new.” The Navy is exploring options for adapting an existing aircraft design to the service's Multi-Engine Training System (METS). According to a draft request for information (RFI) posted May 26, the Navy is looking at existing twin-engine aircraft to replace the service's fleet of 54 T-44Cs used to train Navy, Marine Corps, and Coast Guard pilots to fly aircraft such as the V-22 Osprey, E-2C/D Hawkeye, P-8 Poseidon, P-3 and EP-3 Orion, C-130/KC-130/HC-130 Hercules, E-6 Mercury, C-40 Clipper, HC-27 Spartan and HC-144 Ocean Sentry. The T-44A, a variant of the Beech King Air 90 business aircraft, first entered service in 1980. The existing T-44As all have been modified to the T-44C configuration. The Navy said the METS should have an FAA type certification for single- and dual-pilot operations under day and night visual flight rules and under instrument flight rules. It shall cruise at speeds greater or equal to 195 knots and shall be able to operate at a minimum of 20,000 feet above sea level. The aircraft also should have an endurance of 3.5 or more flight hours. The pressurized aircraft cockpit will have side-by-side seating, as well as a jump seat for an instruct. The cockpit will be equipped with multifunction displays with digital moving map; redundant VHF and UHF radios; an integrated GPS/inertial navigation system; Automatic Dependent Surveillance-Broadcast; flight management system; weather radar, radar altimeter, and a cockpit data recorder. The METS aircraft also shall have tricycle landing gear and a reconfigurable cargo bay in the cabin. https://seapowermagazine.org/navy-exploring-options-for-multi-engine-training-aircraft-to-replace-t-44/

  • State, DoD Letter Warns European Union to Open Defense Contracts, Or Else

    May 22, 2019 | International, Aerospace, Naval, Land, C4ISR, Security, Other Defence

    State, DoD Letter Warns European Union to Open Defense Contracts, Or Else

    By PAUL MCLEARY Europe has bristled at a letter sent to the EU from the Pentagon and State Department, which says proposed EU defense programs are unfair to the US defense industry. WASHINGTON: Pentagon and State Department officials have told the European Union they're “deeply concerned” over plans to potentially exclude US defense firms from competing for billions worth of new arms deals, suggesting the US could slap restrictions on buying European defense equipment in retaliation. At issue is the proposed $14 billion European Defence Fund, and a host of procurement programs under the the Permanent Structured Cooperation, or PESCO, the European economic alliance is undertaking. While the May 1 letter from Ellen Lord, Pentagon procurement chief, and Andrea Thompson, State's undersecretary for arms control and international security, expressed general support for the EU initiatives, it made clear the US would like to see significant changes in the draft language before the 28-country bloc votes on them as early as next month. The language in both documents, the US argues, feature intellectual property and export control restrictions that would act as “poison pills” to “effectively preclude participation by any company that uses U.S.-origin technology.” Overall, Lord and Thompson write, the conditions outlined in the EDF and PESCO documents “represent a dramatic reversal of the last three decades of increased integration of the transatlantic defense sector.” If the restrictions are kept in place, the US officials warn, “it is clear that similar reciprocally imposed U.S. restrictions would not be welcomed by our European partners and Allies, and we would not relish having to consider them in the future.” But EU officials defended their efforts this week. Asked about the US letter, an EU spokesperson replied in an email that the EDF and PESCO will “complement and strengthen NATO,” at a time in which the Trump administration has made that a key policy goal, and “enable Europe to shoulder its fair share of the burden and responsibility for global security.” But it's clear the letter has rankled the Europeans. “The EU has an open and competitive defense procurement framework, in fact more so than the US procurement market,” the spokesperson wrote. “In the EU, there is no ‘Buy European Act.' 81 percent of the total value of international defense contracts in Europe go to US firms. The US defense market is three to four times larger than that of the EU, and yet imports from the EU are marginal for the US, while EU imports from the US are significant.” The official said that American companies with subsidiaries in the EU will remain eligible for funding under the EDF subject to security conditions “which are similar – in fact less restrictive – to the ones that EU companies face in the US.” The EU's High Representative Federica Mogherini told reporters Tuesday that PESCO projects aren't meant to be a vehicle to increase transAtlantic ties, and the EU will gladly continue doing business with non-EU defense companies. The program “is not defined to be an instrument for partnership,” she said. “It does not substitute other partnerships, including in the defense industry and research that we have already in place and that are essential for us,” she added. For years, non-NATO countries like Sweden and Finland have drawn closer to NATO and have increased ties with US defense firms while also building their own domestic defense capabilities, though the relationship hasn't always been smooth. While the US government is concerned over US companies being excluded, the PESCO effort has been developed explicitly to bolster the ability of European countries to produce their own weapons systems, cyber capabilities, and surveillance technologies. So-called “third states” — non EU members — may ask to participate in PESCO projects, but all of the member states must vote to allow them in. Lord and Thompson argue that walling-off EU projects from NATO efforts would lead to duplication and waste, while decreasing interoperability between the EU and NATO. It could also “potentially tum the clock back to the sometimes divisive discussions about EU defense initiatives that dominated our exchanges 15 years ago.” In the end, the US letter is just the latest turn in what has been a complex, up and down relationship between the US and Europe under the Trump administration. The president has loudly condemned Washington's closest allies in Europe for not spending enough on their own defense, while threatening to pull out of NATO. At the same time, the US has increased troop levels in Europe and pumped over $11 billion into the European Deterrence Initiative over the past two years, in an effort to upgrade US and allied basing, increase joint exercises, and modernize equipment on the continent to counter the Russian threat. https://breakingdefense.com/2019/05/state-dod-letter-warns-european-union-to-open-defense-contracts-or-else/

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