16 septembre 2019 | International, Aérospatial

USAF Identifies Critical New KC-46 Design Flaw

By

The U.S. Air Force has identified a potential new design flaw with the KC-46A tanker and banned the fleet from carrying cargo or passengers until a solution is found and delivered.

Multiple cargo locks embedded in the floor of the aircraft released inadvertently during a recent operational test and evaluation flight, according to a statement by Air Mobility Command (AMC).

Air Force and Boeing officials are working to identify a solution to the problem, AMC says.

An uncommanded release of the cargo locks could allow pallets of cargo or passenger seats to shift position during flight, potentially changing the center of gravity of the aircraft.

In response, the Air Force generated the third unresolved Category 1 deficiency report charged to the KC-46 program, AMC says. A Category 1 deficiency reflects an identified risk that jeopardizes lives or critical assets.

The Air Force agreed to accept the first KC-46 last January despite two Category 1 deficiencies still pending.

Boeing is implementing an Air Force-funded design change to the actuator on the refueling boom to make it more sensitive to smaller receiver aircraft, such as A-10s and F-16s.

Meanwhile, Boeing has submitted a proposed redesign of the remote vision system (RVS) to correct what the Air Force calls a “rubber sheeting” affect that distorts the image on the visual display used by the boom operator during refueling operations. Boeing has agreed to pay for an RVS design that received approval by the Air Force.

https://aviationweek.com/defense/usaf-identifies-critical-new-kc-46-design-flaw

Sur le même sujet

  • La Bulgarie va voler américain, elle achète 8 F-16 Block 70 à Lockheed Martin

    6 avril 2020 | International, Aérospatial

    La Bulgarie va voler américain, elle achète 8 F-16 Block 70 à Lockheed Martin

    Par Michel Cabirol Lockheed Martin a signé avec Sofia un contrat évalué à 512 millions de dollars pour la vente de huit F-16 Block 70. Et la Bulgarie volera américain... comme beaucoup de pays européens. Le ministère de la Défense américain (DoD) a annoncé jeudi que Lockheed Martin avait signé avec Sofia un contrat FMS (Foreign military sales) évalué à 512 millions de dollars pour la vente de huit F-16 Block 70. Fabriqués dans la nouvelle ligne de production de F-16 à Greenville (Caroline du Sud), les avions de combat américains, qui devraient être livrés en 2027, vont remplacer une flotte de 15 MiG-29 bulgares (sur 19) encore en service jusqu'en 2029. Membre de l'OTAN, la Bulgarie compte également dans sa flotte huit Sukhoi, dont deux d'entrainement. La Bulgarie assurera la défense de son espace aérien Sofia avait opté en décembre 2018 pour les F-16 parmi trois autres appareils en compétition : le F/A-18 Super Hornet de Boeing, l'Eurofighter Tranche 1 d'occasion (Italie) et le JAS-39 Gripen C/D (Suède). Puis, le Département d'État américain avait approuvé cette vente en juin 2019. Il avait évalué la vente ainsi que le soutien des appareils à 1,67 milliard de dollars. Cette vente avait alors estimé le DoD contribuera à améliorer la sécurité d'un allié de l'OTAN et d'un partenaire clé des États-Unis pour assurer la paix et la stabilité dans cette région. Elle permettra également à la Bulgarie d'assurer la défense de son espace aérien et d'être interopérable avec les États-Unis et l'OTAN. Selon le DoD, la Bulgarie s'appuie actuellement sur les États-Unis et le Royaume-Uni pour opérer des missions de police aérienne bulgares. "En acquérant ces F-16, la Bulgarie sera en mesure d'assurer la défense de son propre espace aérien et de ses frontières", avait expliqué le DoD. https://www.latribune.fr/entreprises-finance/industrie/aeronautique-defense/la-bulgarie-va-voler-americain-et-achete-8-f-16-block-70-a-lockheed-martin-844265.html

  • Boeing Makes Third Move Into Metal Additive Manufacturing This Year

    13 août 2018 | International, Aérospatial

    Boeing Makes Third Move Into Metal Additive Manufacturing This Year

    Lee Ann Shay Boeing made another investment in additive manufacturing, this time with the intent of producing higher volume of multi-metal parts faster. Boeing HorizonX Ventures invested an undisclosed amount in Digital Alloys, which created Joule Printing, a metal additive manufacturing technology that uses metal in wire form and high deposition rates to produce the parts. The investment was part of a $12.9 million Series B financing led by G20 Ventures and included other companies. Boeing and Digital Alloys did not disclose the exact investment but Boeing said it “was a minority investor in this round.” Lee Ann Shay | Aug 10, 2018 Boeing made another investment in additive manufacturing, this time with the intent of producing higher volume of multi-metal parts faster. Boeing HorizonX Ventures invested an undisclosed amount in Digital Alloys, which created Joule Printing, a metal additive manufacturing technology that uses metal in wire form and high deposition rates to produce the parts. The investment was part of a $12.9 million Series B financing led by G20 Ventures and included other companies. Boeing and Digital Alloys did not disclose the exact investment but Boeing said it “was a minority investor in this round.” Get Key Developments Delivered to Your Inbox Get Your Sample Edition Digital Alloys holds two patents for Joule Printing, which can use multiple metals into a single part. This could enable new parts designs and improved thermal, electric and mechanical properties. This printing process is “similar to resistive welding and does not result in fully melting the material through external energy sources like lasers, e-beams, or electric arcs. As such, it has the potential to print alloys that have been a challenge with existing printing techniques, but with less energy and a lower machine complexity,” says Boeing. Joule Printing solves “three big problems that are gating the use of metal printing and production:” production costs, printing speeds and complexity, says Duncan McCallum, Digital Alloy's CEO. Full Article: https://www.mro-network.com/technology/boeing-makes-third-move-metal-additive-manufacturing-year

  • Turkish suppliers to be eliminated from F-35 program in 2020

    10 juin 2019 | International, Aérospatial

    Turkish suppliers to be eliminated from F-35 program in 2020

    By: Valerie Insinna WASHINGTON — The Pentagon is preparing to transfer Turkey's industrial participation in the F-35 to other countries unless Ankara reverses course on its plans to buy the Russian S-400 air defense system. The move — which in early 2020 would end contracts with major Turkish defense contractors such as Turkish Aerospace Industries, Roketsan and Tusas Engine Industries, among many others — is just one of many steps the U.S. Defense Department intends to take to strip Turkey from the F-35 program, according to a June 6 letter from acting Defense Secretary Patrick Shanahan. The training of Turkish F-35 pilots at Luke Air Force Base in Arizona and of Turkish maintainers at Eglin Air Force Base, Florida, will also end, Shanahan wrote, and U.S. military exercises in Turkey are in jeopardy. “If Turkey procures the S-400, as we discussed during our call on May 28, 2019, our two countries must develop a plan to discontinue Turkey's participation in the F-35 program,” Shanahan wrote in the letter, which was addressed to his counterpart, Turkish Defense Minister Hulusi Akar. “While we seek to maintain our valued relationship, Turkey will not receive the F-35 if Turkey takes delivery of the S-400.” However, Ellen Lord, undersecretary of defense for acquisition and sustainment, noted that Turkish participation in the program would be allowed to continue if it drops its plan to buy the Russian air defense system. The delivery of the S-400 could occur as early as this month. “Turkey still has the option to change course. If Turkey does not accept delivery of the S-400, we will enable Turkey to return to normal F-35 program activities,” she told reporters Friday. “Turkey is a close NATO ally and our military-to-military relationship is strong.” Turkey, a partner in the F-35 program that helped fund the development of the jet, plans to buy 100 F-35As. Its first jet was rolled out in June 2018 in a festive “delivery ceremony,” but although Turkey formally owns its jets, the United States has the power to keep the planes from moving to Turkish soil and intends to keep all four existing Turkish jets from leaving the United States. Lord told reporters that the Pentagon is still deciding what it will do with Turkey's jets. One option would be to buy the aircraft and repurpose them for the U.S. Air Force, but no official decision has been made. Turkish companies are responsible for 937 parts used to build the F-35, with 400 of those sole-sourced from Turkish firms, Lord said. Existing contracts would go through a “disciplined and graceful wind down” period in “early 2020,” Lord said. “If we can work to our timelines with the Turks, we would have no major disruptions and very few delays,” she said. Vice Adm. Mat Winter, the F-35's program executive, said in April that 50-75 aircraft could be delayed over a two-year period if Turkey is removed from the program, according to Breaking Defense. But Lord said those disruptions would occur only if the Pentagon terminated its supply chain agreements this summer. Ultimately, prime contractors Lockheed Martin and Pratt & Whitney will make the decisions on which subcontractors replace the Turkish vendors, but the Pentagon has identified new suppliers that could step up and make the parts currently sole-sourced by Turkey. “They are predominantly U.S. sources. That's not to say that we won't continue to do what we always do with program management and look for other sources, because we would like to have second, third sources for most of the items,” she said. The Defense Department has already stopped material deliveries to Turkey, halting the buildup of an engine overhaul facility that was planned to be built in and operated by Turkey. “There are two other European MRO&Us [maintenance, repair, overhaul and upgrade facilities] that can absorb the volume with no issue whatsoever,” Lord said. Despite Turkey's industrial role in the program, Lord said she was confident that all important technical information would stay secure. "We control what is downloaded from our computers. We have shared what's appropriate. The Turks have no critical documentation that we're concerned about,” she said. What's the impact on Turkish F-35 training? The most immediate impact to Turkey, according to the letter from Shanahan, is that no new Turkish students will begin F-35 training at Luke Air Force Base. This defers the training of 20 students scheduled to begin training in June, as well as 14 students between July and November 2019. “This training will not occur because we are suspending Turkey from the F-35 program; there are no longer requirements to gain proficiencies on the systems,” according to a document attached to the letter that spelled out the schedule for Turkey's removal from the program. In addition, the country will not be allowed to attend the annual F-35 Chief Executive Officer roundtable on June 12 — depriving Turkey of the opportunity to give input on any changes to the program's governing documents. Full article: https://www.defensenews.com/air/2019/06/07/turkish-suppliers-to-be-eliminated-from-f-35-program-in-2020/

Toutes les nouvelles