29 juillet 2021 | International, Terrestre

Lawmakers want answers on US Army plans to protect vehicles from drones

Will the Army's combat vehicles be able to actively defend against drones? A House subpanel wants to know.

https://www.defensenews.com/land/2021/07/28/lawmakers-want-answers-on-us-army-plans-to-outfit-vehicles-with-drone-protection/

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  • Maintainers Maintain Mission Readiness

    15 août 2019 | International, Aérospatial

    Maintainers Maintain Mission Readiness

    By Airman 1st Class Adriana Barrientos Fighter jets and heavies can rule the skies, but they need to get there first. It takes strict attention to detail from aircraft maintainers to service aircraft in order to launch them to the battlefield. Airmen from the 703rd Aircraft Maintenance Squadron identified and fixed a misplaced spoiler control rod on the E-3 Sentry during a Home Station Check at Joint Base Elmendorf-Richardson, June 3, 2019. Aircraft maintainers play a huge role when it comes to mission readiness. After all, they are responsible for the upkeep of aircraft that fly through the skies. It's imperative for these Airmen to be meticulous, confident and disciplined in order to carry out their mission— inspect aircraft and troubleshoot problems. The 703rd AMXS supports JBER's worldwide contingency and maintenance operations for the 3rd Wing, 11th Air Force, and the North American Aerospace Defense Command. They are responsible for the C-17 Globemaster III, E-3 Sentry, and C-130 Hercules. Crew chiefs assigned to the 703rd AMXS are assigned to either the 962nd or the 517th Aircraft Maintenance Units. One type of aircraft maintained by the 962nd AMU is the E-3 Sentry. As an airborne warning and control system or AWACS aircraft, it performs an essential mission, distinguishing between friendly and enemy activity. It also provides airborne command and control in addition to conducting all-altitude, all-weather surveillance. “I come to work and figure out what the flying and maintenance schedule is for the day,” said U.S. Air Force Staff Sgt. John Hays, 962nd AMU crew chief lead for two E-3B/C aircraft. “On a typical day, we launch one of the jets for a four to six-hour sortie and recover the jet towards the end of the shift. Once the jet lands, the other crew chiefs and I will perform a post-flight inspection and fix anything we find.” As a crew chief, Hays performs visual inspections of the entire structure of the aircraft. These include calendar inspections, which serve to provide constant observation of all components of the aircraft to ensure reliability. It was June 3rd when an issue with the jet's spoiler rod was identified during an in-depth calendar inspection, known as a Home Station Checks. “Calendar inspections vary, but a really important one is the Home Station Check that is completed every 180 days,” said U.S. Air Force Staff Sgt. Brandon Solomons, 962nd AMU crew chief. “One of the biggest things we look for during these inspections is irregular rubbing of moving components. During our mid-shift, Senior Airman Eric Goodholm noticed one of the rods was pushed up against another component in the wing called the flap track gearbox.” In this case, it was the spoiler control rod, which was not damaged but could have potentially caused a major problem during the flight. “A spoiler control rod basically helps lift the spoiler— a vital flight control surface that allows the jet to turn in flight, as well as a brake or slow down the jet during approach and landing,” said Solomon. “The pushrod is not supposed to rub on the gearbox, so myself and our production superintendent performed further investigations,” said Hays. “I identified that the two outboard spoilers follow up pushrods were connected incorrectly to the idler arm, therefore causing the pushrod to rub on the gearbox.” The total time to fix the issue was a combined eight hours, to include an operation check. “I led the fix of the malfunction along with Staff Sgt. Solomons,” said Hays. “We disconnected and reconnected the pushrods to the idler arm correctly, which provided the proper clearance from the gearbox.” These kinds of calendar inspections allow maintainers to identify defects before malfunctions cause serious danger or harm to the aircraft or personnel. In any case, a setback with the aircraft is a setback to the mission. “After ensuring the rod wasn't damaged, we got in touch with Tinker Air Force Base, and they found the same problem on three of their jets,” said Solomons. “This discovery drove a Time Change Technical Order, implemented to prevent flight binding across the fleet.” Time Change Technical Orders, or periodic updates to aircraft that authorize the modification of a system, were pushed to keep the operational tempo on track. As an air defense system, E-3s can detect, identify and track airborne enemy forces far from the boundaries of the United States or NATO countries. It can direct fighter-interceptor aircraft to these enemy targets. Thus being a vital component to the mission in day to day operations. “Something like this could have been easily overlooked, but Senior Airman Goodholm is very thorough and paid great attention to detail,” said Solomons. After the team made modifications and the pushrods were properly connected, a rig check was performed to verify if the spoilers were in the proper configuration. “I can say Senior Airman Goodholm, Staff Sgt. Hays and I contributed by identifying and planning a course of action to fix this issue, but it was an effort as an AMU that fixed the discrepancy,” said Solomons. “With the unit's team effort and strong leadership the problem was identified, fixed and the jet was able to go and perform the mission again.” General maintenance actions and inspections by not only the 703rd AMXS, but all maintainers require attention to detail day in and day out. The lives of the crew and mission success depend on it. https://www.jber.jb.mil/News/News-Articles/Article/1933112/maintainers-maintain-mission-readiness/source/GovD/

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

    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/

  • Air Force to get a head start on GPS, target tracking efforts

    16 avril 2024 | International, Aérospatial

    Air Force to get a head start on GPS, target tracking efforts

    The service's first two Quick Start efforts involve boosting GPS resilience and advancing moving target indication capabilities.

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