Japanese firms sign $225 million deals to maintain Ospreys for Navy, Marine Corps

Sur le même sujet

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  29 septembre 2021 | International, Aérospatial, Terrestre

  Army bomb techs field test new aerial drone

  The drone will help soldiers check terrain and identify hazards.

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  22 juin 2018 | International, Naval

  Upgrading US Navy ships is difficult and expensive. Change is coming

  By: David B. Larter WASHINGTON ― The U.S. Navy is looking at extending the life of its surface ships by as much as 13 years, meaning some ships might be 53 years old when they leave the fleet. Here's the main problem: keeping their combat systems relevant. The Navy's front-line combatants ― cruisers and destroyers ― are incredibly expensive to upgrade, in part because one must cut open the ship and remove fixtures that were intended to be permanent when they were installed. When the Navy put Baseline 9 on the cruiser Normandy a few years ago, which included all new consoles, displays and computer servers in addition to the software, it ran the service $188 million. Now, the capability and function of the new Baseline 9 suite on Normandy is staggering. The cost of doing that to all the legacy cruisers and destroyers in the fleet would be equally staggering: it would cost billions. So why is that? Why are the most advanced ships on the planet so difficult to keep relevant? And if the pace of change is picking up, how can the Navy stay relevant in the future without breaking the national piggy bank? Capt. Mark Vandroff, the current commanding officer of the Carderock Division of the Naval Surface Warfare Center and former Arleigh Burke-class destroyer program manager, understands this issue better than most. At this week's American Society of Naval Engineers symposium, Vandroff described why its so darn hard to upgrade the old ships and how future designs will do better. Here's what Vandroff had to say: “Flexibility is a requirement that historically we haven't valued, and we haven't valued it for very good reasons: It wasn't important. “When you think of a ship that was designed in the ‘70s and built in the ‘80s, we didn't realize how fast and how much technology was going to change. We could have said: ‘You know what? I'm going to have everything bolted.' Bolt down the consoles in [the combat information center], bolt in the [vertical launch system] launchers ― all of it bolted so that we could more easily pop out and remove and switch out. “The problem was we didn't value that back then. We were told to value survivability and density because we were trying to pack maximum capability into the space that we have. That's why you have what you have with the DDG-51 today. And they are hard to modernize because we valued survivability and packing the maximum capability into the minimum space. And we achieved that because that was the requirement at the time. “I would argue that now as we look at requirements for future ships, flexibility is a priority. You are going to have to balance it. What if I have to bolt stuff down? Well, either we are going to give up some of my survivability standards or I'm going to take up more space to have the equivalent standards with an different kind of mounting system, for example. And that is going to generate a new set of requirements ― it's going to drive design in different directions than it went before. “I suppose you could accuse the ship designers in the 1980s of failure to foresee the future, but that's all of us. And the point is they did what they were told to do. Flexibility is what we want now, and I think you will see it drive design from this point forward because it is now something we are forced to value.” https://www.defensenews.com/naval/2018/06/21/upgrading-us-navy-ships-is-difficult-and-expensive-change-is-coming/

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  21 mai 2020 | International, Aérospatial

  US Air Force launches contest to replace the B-52 bomber’s engine

  By: Valerie Insinna   15 hours ago WASHINGTON — General Electric, Rolls-Royce, and Pratt & Whitney will compete for the chance to outfit the U.S. Air Force's B-52 bomber fleet with new engines, with a contract award projected for June 2021. The Air Force released a request for proposals for the B-52 Commercial Engine Replacement Program to the three companies on May 19. The engine makers are already under contract to create digital prototypes, and they have until July 22 to submit final proposals, the solicitation stated. The Air Force operates 76 B-52s, each outfitted with eight TF33 engines. The service plans to order 608 new engines, plus spares and support, from the winner of the competition. The public version of the RFP obscures the estimated value of the program, which is projected to extend from 2021 to 2035. Pratt & Whitney, which manufactured the TF33 currently onboard the B-52, has stated it will propose the PW800. “Its industry-leading reliability, robust sustainment infrastructure, and significant fuel efficiency savings will greatly improve the legendary bomber and keep it flying for decades to come,” said Chris Johnson, Pratt & Whitney's executive director for mobility and diverse engine programs. "Our unique experience with the B-52, coupled with our expertise integrating commercial engines onto military applications, will deliver a low-risk, high-performance engine to power the Stratofortress fleet through 2050.” GE Aviation will put forward the CF34-10 and Passport engines, spokesman David Wilson said. “GE is the only company to have been involved in re-engining U.S. Air Force aircraft three times over,” he said. “Add in our deep experience powering six strategic bombers, entrenched support of air combat and the reverence we have for the role we play in protecting this country, and GE is the clear partner to ensure the B-52 is ready at all times for mission critical.” Rolls-Royce intends to offer its F130 engine, the company confirmed. “Rolls-Royce is excited to move to the proposal stage of the campaign and ready to demonstrate that the Rolls-Royce F130 engine is the perfect fit for the B-52,” Craig McVay, senior vice president for Rolls-Royce Defense, said in a statement. “The F130 is a highly reliable and proven engine which is already in commercial production. Our team is focused and energized, and eager to compete for the B-52 Commercial Engine Replacement Program and provide the best possible solution for the U.S. Air Force and the key missions of the B-52 weapon system.” The Air Force plans to operate the B-52 into the 2050s and sees new commercial engines as a way to reduce fuel burn and the time it takes to maintain the bomber. Last year, B-52 maintainers at Barksdale Air Force Base, Louisiana, told Defense News that modern engines would make it easier for crews to diagnose problems and make needed repairs. “I would like to know if I need to take that aircraft down out of the schedule and give it a new engine ahead of time,” said Lt. Col. Tiffany Arnold, 2nd Maintenance Squadron commander. “We could prioritize, we could understand the patterns of the engines in a way that we could maintain them better. And hopefully the new motor, whoever designs it, will have a shorter mean time between failure, and we can fly them longer.” https://www.defensenews.com/air/2020/05/20/the-air-force-launches-a-contest-to-replace-the-b-52s-engine/