5 mars 2024 | International, C4ISR
Elbit Systems subsidiary to supply shot-spotting sensors in Africa
A combination of electro-optical and acoustic sensors helps pinpoint the origin of weapons fire and explosions as far as 6 miles away.
11 septembre 2018 | International, Aérospatial
How B-52 Bombers Will Fly Until the 2050s
The Air Force's fleet of Cold War bombers will fly longer than most people will live, allowing B-52 crews to work on planes their great-grandfathers flew.
A series of upgrades to the B-52 Stratofortress bomber could keep the remaining fleet of Cold War bombers going until 2050. The planes, built during the Kennedy Administration, are expected to receive new engines, electronics, and bomb bay upgrades to keep them viable in nuclear and conventional roles.
The B-52 strategic heavy bomber is a true survivor. It was designed to fly high over the Soviet Union carrying atomic bombs if necessary. But the B-52 is the do-it-all tool of strike warfare, taking on whatever mission is popular at the time.
B-52s were modified to drop conventional bombs during the Vietnam War, where they proved they could fly low to penetrate enemy defenses, gained the ability to drop precision-guided bombs, and swapped their nuclear bomb loads for nuclear-tipped cruise missiles. The B-52s also can carry Harpoon anti-ship missiles, lay minefields at sea, and provide close air support to troops on the ground. B-52s have even flirted with air-to-air warfare, with their tail gunners reportedly shooting down two MiG-21 fighters over Vietnam.
Of the original 102 B-52Hs built between 1961 and 1962, 76 are still flying with the Air Force's Global Strike Command and Air Force reserve. B-52s regularly fly to Europe and Asia, and in early June, two B-52s stationed on the island of Guam flew to the South China Sea in protest of Chinese territorial claims.
Now the U.S. Air Force is embarking on a series of major upgrades that could give the B-52 another 30 years of service. According to National Defense, a key improvement will be re-engining the big bomber. Each B-52 still operates eight original TF-33-103 engines. Not only are those engines generations behind the state of the art, but their age, and the difficulty to source spare parts, puts their future use in jeopardy—a problem Popular Mechanics covered last year. Rolls-Royce, Pratt & Whitney, and GE Aviation have all expressed interest in the new B-52 engine, but only Pratt and Whitney has actually chosen a potential replacement: the PW815 engine used in the Gulfstream G500 passenger jet.
The Air Force would like to replace the bomber's APQ-166 terrain following and mapping radars, which are essential for low-level flight. A bomb bay upgrade will allow the B-52 to carry JDAM satellite-guided bombs and Joint Air-to-Surface Standoff Missiles (JASSM) in its internal bay. Storing weapons internally reduces drag, increasing range. Alternately a B-52 could carry both internal and external stores. A single B-52 can carry eight JASSMs internally and twelve externally, for a total of 20 of the precision attack missiles.
Full article: https://www.popularmechanics.com/military/aviation/a23066191/b-52-bombers-fly-until-the-2050s
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1 août 2018 | International, Aérospatial
India to spend $1 billion on advanced air defense system from US
By: Vivek Raghuvanshi NEW DELHI — India has quietly approved a plan to the National Advanced Surface-to-Air Missile System-II through a government-to government deal with United States. The moves comes before September 6 “2+2 dialogue” between defense and foreign ministers of India and United States here to bolster bilateral defense and strategic partnership. The apex defense procurement body, Defense Acquisition Council, headed by Defense Minister Nirmarla Sitaraman, has approved the buy of hte NASAMS-II, manufactured by Kongsberg and Raytheon, at more than $1 billion, a Ministry of Defense official confirmed. The new system will replace India's aging Russian Pechora air defense systems that protect strategic assets and locations, said an Indian air force official. If this program is approved by the U.S., the deal will be expedited through foreign military sales. India is expected to issue the letter of request by end of this year. IAF official noted that NASAMS-II will have to be modified to India specific requirements and will integrated with the service's integrated command & control system. https://www.defensenews.com/global/asia-pacific/2018/07/31/india-to-spend-1-billion-on-advanced-air-defense-system-from-us/
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7 août 2020 | International, Aérospatial
UK facilities for American F-35 jets are delayed and over budget
By: Valerie Insinna WASHINGTON — The U.S. Air Force is on track to begin permanently basing its F-35 jets abroad next year, with RAF Lakenheath in England set to become the service's first international F-35 base. But construction on new hangars and facilities necessary for supporting the high-tech stealth jet have gone over budget and over schedule, and many buildings won't be ready when the first planes arrive in November 2021. On average, construction projects associated with the F-35 beddown at Lakenheath are about 25 percent over the initial $480 million budget estimated in 2015, said Lt. Col. Clinton Warner, who leads the 48th Fighter Wing's F-35 program integration office. “The overall trend has been projects are late and also over budget,” he told Defense News during a July interview. “A lot of the assumptions that were made back in 2015 weren't necessarily valid. There's been cost growth that was outside of the planning assumptions that were made back in 2015.” The cost increase is not the only problem. As RAF Lakenheath's first F-35 squadron stands up, neither the hangars planned to house the jets nor the headquarters building used for planning operations and maintenance will be ready, Warner said. A training simulator building will also be late. Despite the delays, the Air Force still plans to move forward with the beddown of the jet. Warner said the service is exploring options to keep operations on track, such having the new F-35 squadron share space with existing units — which include three American F-15 squadrons — or potentially leasing additional facilities on base from the United Kingdom. “In terms of getting here and flying the aircraft, we will still do that. [There is] really no difference in terms of the capability is going to be delivered, but it'll just look different in how we do it,” Warner said. “It will be some strain on the units here at the base, as there's more crowding and with waiting for those facilities to come online.” The arrival of U.S. Air Force F-35s in Europe has been a long-awaited milestone for the service, which announced in 2015 that RAF Lakenheath would become the first international location to get the jets. Since then, F-35s temporarily deployed to the base in 2017. “Having a fighter with the capability of the F-35s one hop closer to a part of the world that's seemingly less stable certainly will have a deterrent effect,” said Frank Gorenc, a retired four-star general who commanded U.S. Air Forces in Europe from 2013 to 2016. “Being able to daily train with the partners that have F-35s will have a deterrent effect,” Gorenc told Defense News. “It will cause interoperability to soar both on the maintenance side and on the operations side. I think the benefits of having that equipment — the demonstration of having a fifth-generation [fighter jet] in theater combined with F-15Es and F-16s — I think is the right signal.” Under the current plans, F-35 pilots and maintainers will begin to arrive at RAF Lakenheath in June 2021, with the first aircraft to follow in November. The base will eventually be home to two F-35 squadrons, each with a total of 24 jets. That beddown will follow more than five years of planning and development on the part of the Air Force, which stood up a team in 2015 to get the base ready for the incoming jets. In 2018, the U.S. Air Force chose Kier-Volker Fitzpatrick, a joint venture of U.K.-based design and construction firms Kier Group and VolkerFitzpatrick, to build and renovate all installations associated with the F-35 presence at RAF Lakenheath. Construction began in July 2019, with seven of 14 new facilities — which will include new hangars, a building for flight simulation, a maintenance unit and storage facilities — currently either being built or already complete. As unforeseen costs have mounted, the base's program integration office has had to request $90 million in additional funding from Congress, as well as permission from the Pentagon to revise the scope of the projects, Warner said. But there's no overarching answer for why costs have ballooned. “Each individual project had a different set of assumptions, a different set of risk profiles, and some were correct and some are not correct,” Warner said. With only a few years between the decision to base F-35s at Lakenheath in 2015 and the original planned start of operations in 2020, the U.S. government wanted to put a construction firm under contract sooner rather than later, said Stephen King of the Defence Infrastructure Organisation, a U.K. government agency charged with overseeing the building and maintenance of military facilities. But workforce costs grew as the project was discovered to be more complex than originally anticipated. “When the workers are tendered, the prices that are coming back in are found to be different from those originally estimated, and it seems to be the price of doing business on a military establishment. There seems to be an ‘add-on' to the outside market,” King said. Because the F-35 is a stealth jet that processes large amounts of classified information, many of the installations linked with its operations must meet certain security specifications. Building those structures to both U.S. and U.K. standards while using a foreign workforce of U.K. citizens posed challenges that the U.S. Air Force did not foresee during the design process, Warner said. “Luckily most of these problems are behind us, but they did cause delays in terms of when we were programming out in the schedule and looking at what we thought it would look like,” he said. “Some of the challenges associated with building those secure facilities were not fully understood.” Air Force officials have said keeping the projects on track was always going to be a challenge. In 2016, Col. Robert Novotny, who was then the commander of the base's 48th Fighter Wing, predicted construction projects could face troubles getting funding or finding a skilled workforce to build the new facilities, and that F-35s likely wouldn't begin to arrive on base until at least 2021 or 2022. “For me, the concern I have when I look at Lakenheath is not the F-35,” he told Defense News in July 2016. “For me, the concern I have is: Are we going to be able to build enough stuff fast enough?” https://www.defensenews.com/smr/nato-air-power/2020/08/06/uk-facilities-for-american-f-35-jets-are-delayed-and-over-budget/