11 février 2021 | International, Naval
Posted on February 9, 2021 by Richard R. Burgess, Senior Editor
ARLINGTON, Va. — Boeing has begun work to return the Harpoon cruise missile to operational status in the U.S. Navy's submarine force after a more than 20-year absence.
Boeing received an $10.9 million Naval Sea Systems Command contract late last month to refurbish 16 Harpoon missile capsules and four all-up rounds of encapsulated Block 1C Harpoon missiles for the Navy's submarines. Work is scheduled for completion by December 2022.
The UGM-84A Harpoon Block 1C missiles will be integrated on the Navy's Los Angeles-class submarines. The UGM-84A is encapsulated to be fired from a torpedo tube and has a rocket booster to propel it above the surface of the water and into flight.
“I am happy to report that we will have the first refurbished [Harpoon] missiles delivered to the fleet in [fiscal] ‘21,” said Rear Adm. Thomas Ishee, director of undersea warfare in the Office of the Chief of Naval Operations, speaking Nov. 7 at the Naval Submarine League's annual symposium in Arlington.
In a demonstration in the 2018 Rim of the Pacific exercise, a Harpoon was fired from the Los Angeles-class attack submarine USS Olympia at a target ship, the first time one was fired from a U.S. Navy submarine since the UGM-84A Harpoons were withdrawn from the force in 1997.
The UGM-84A is encapsulated to be fired from a torpedo tube and has a rocket booster to propel it above the surface of the water and into flight.
“The Navy has a deep inventory of Harpoon Block IC missiles,” said Sally Seibert, director, Cruise Missile Systems at Boeing, in a statement. “These missiles can be refurbished and reintegrated into the fleet in a shorter timeframe, and at a fraction of the cost, compared to purchasing new missiles — and that is exactly what our team is doing.”
The Harpoon cruise missile is a combat-proven, all-domain anti-ship missile used by the Navy and more than 30 international customers, a statement from Boeing said. “Evolving over the years to keep pace with emerging threats, the Harpoon Block II includes a GPS-aided guidance system that allows for autonomous, all-weather capability — and can execute both anti-ship and land-strike missions. The more advanced Harpoon Block II+ adds a data link that allows for in-flight targeting updates.”
“The shelf life of the Harpoon missile allows us to maximize existing capability by bringing this weapon back to the submarine fleet,” Seibert said. “Customers who currently have Harpoon missiles in their inventory are prime candidates for refurbishments, or even upgrades, to add this extremely viable and cost-effective weapon to their arsenal.”
Currently, more than 600 ships, 180 submarines, 12 different types of aircraft and several land-based launch vehicles across the world are integrated with Harpoon missiles, Boeing said.
https://seapowermagazine.org/boeing-is-refurbishing-harpoon-missiles-for-u-s-navy-submarines/
10 février 2024 | International, Terrestre
We have been warned — over and over again lately — that Russia’s invasion of Ukraine is an inflection point in history. And while the soaring political rhetoric may have sounded good over the last few years, it's very likely that this week, we truly arrived at that turning point.
31 mars 2020 | International, Aérospatial
Lee Hudson The U.S. Air Force has upgraded an existing deficiency for the KC-46A Pegasus fuel system to Category 1. The service's program office first identified “excessive fuel leaks” in July after an air refueling test. The Air Force and Boeing are working together to determine the root cause and implement corrective actions. A Category 1 deficiency means the government has identified a risk that jeopardizes lives or critical assets. “The KC-46 Program Office continues to monitor the entire KC-46 fleet and is enhancing acceptance testing of the fuel system to identify potential leaks at the factory where they can be repaired prior to delivery,” according to an Air Force statement. Boeing is contractually obligated to rectify this deficiency at no additional cost to the Air Force. “We are disappointed to learn of this development and are already implementing assembly and installation improvements to correct the issue,” Boeing spokesman Larry Chambers said in a statement to Aerospace DAILY. “We have repaired several of the airplanes and will continue to implement repairs as needed. Boeing is working with urgency to address this issue.” The Air Force discovered several required fuel-system repairs, Chambers said. The fuel system is equipped with redundant protection for fuel containment. “In some cases with this issue, aircraft maintenance crews are finding fuel between the primary and secondary fuel barriers within the system,” Chambers said. The KC-46A program still faces other unresolved Category 1 deficiencies that involve the Remote Vision System (RVS) and the boom telescope actuator. The problem with the RVS is what the Air Force calls a “rubber sheet” effect that distorts the image on the visual display used by the boom operator during refueling operations. The actuator on the boom needs to be more sensitive to smaller receiver aircraft, such as A-10s and F-16s. Boeing has agreed to pay for the RVS design fix, while the Air Force will finance the design change to the actuator. “There's profound problems with the system,” Air Force Chief of Staff Gen. David Goldfein said March 3 during a Senate Armed Services Committee hearing. The service is certifying the aircraft to conduct airlift and medical evacuation missions. The plan is for the Air Force to employ the KC-46 in those roles while a long-term fix is being developed, Goldfein said. Goldfein told new Boeing CEO Dave Calhoun to focus on the KC-46 program, even as it is fixing the 737 MAX. Calhoun said the KC-46 is his top military priority. “I have seen a change in the behavior of that company since he took over, and so that's why we're more confident sitting here today that we have a serious fix on the table,” Goldfein said. “We're in final negotiations, so we can't go into any more detail than that. But I will say that it's looking better today than it was even six months ago.” https://aviationweek.com/defense-space/aircraft-propulsion/usaf-announces-new-major-deficiency-kc-46
3 mars 2020 | International, Aérospatial, Naval
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/