F-35 stress tests raise possibility of longer service life

Sur le même sujet

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  1 juin 2023 | International, Aérospatial

  Auditors: Future F-35 cooling needs unknown as DoD eyes engine upgrade

  “Without defined [cooling and engine] requirements, the F-35 program is at greater risk of repeating prior missteps,” GAO said.

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  17 janvier 2019 | International, C4ISR

  US considers new ways to detect and track enemy missiles

  By: Robert Burns, The Associated Press WASHINGTON — The Trump administration is considering ways to expand U.S. homeland and overseas defenses against a potential missile attack, possibly adding a layer of satellites in space to detect and track hostile targets. Details on how far the administration intends to press this in a largely supportive Congress are expected to be revealed when the Pentagon releases results of a missile defense review as early as Thursday. The release was postponed last year for unexplained reasons, though it came as President Donald Trump was trying to persuade North Korea to give up its nuclear weapons. A review might have complicated the talks. The Trump approach is expected to include emphasis on stopping missiles either before they are launched or in the first few minutes of flight when their booster engines are still burning. Congress already has directed the Pentagon to push harder on this "boost-phase" approach, which might include the use of drones armed with lasers. Any expansion of the scope and cost of missile defenses would compete with other defense priorities, including the billions of extra dollars the Trump administration has committed to spending on a new generation of nuclear weapons. An expansion also would have important implications for American diplomacy, given longstanding Russian hostility to even the most rudimentary U.S. missile defenses and China's worry that longer-range U.S. missile defenses in Asia could undermine Chinese national security. Senior administration officials have signaled their interest in developing and deploying more effective means of detecting and tracking missiles with a constellation of satellites in space that can, for example, use advanced sensors to follow the full path of a hostile missile so that an anti-missile weapon can be directed into its flight path. Space-based sensor networks would allow the U.S. to deal with more sophisticated threats such as hypersonic missiles. "I think that makes a lot of sense," said Frank Rose, a former Pentagon and State Department official and now a senior fellow for security and strategy at the Brookings Institution. "This could make a real improvement in our missile defense capabilities." Current U.S. missile defense weapons are based on land and aboard ships. Republican presidents starting with Ronald Reagan, who proposed a "Star Wars" system of anti-missile weapons in space, have been more enthusiastic about missile defense than Democrats. In recent years, however, both parties have argued that better defenses are needed, if only against emerging nuclear powers such as North Korea. Trump's detailed views on this are not well-known. The national security strategy he unveiled in December 2017 called "enhanced" missile defense a priority, but it also said it was not intended to disrupt strategic relationships with Russia or China, whose missile arsenals the U.S. sees as the greatest potential threat. John Rood, the undersecretary of defense for policy, said last year that a space-based layer of missile-tracking sensors would not mark a big shift in American policy or as a security threat to others like Russia or China. "It watches, it detects what others are doing. I don't regard it as a provocative act to observe the missile flights of missiles that are potentially threatening to the United States," Rood said in September. "I don't think having a sensor capability is a sea change for the United States," he added, without stating directly that the Trump administration will pursue this. Such a system is different than the more provocative idea of putting missile interceptors aboard satellites in space, which is not expected to be part of the Trump strategy. Congress has ordered the Pentagon to study it and some senior Pentagon officials have said recently that space-based interceptors are feasible and affordable. However, Rood in September strongly suggested that that Pentagon is not ready to move ahead with that. "Those are bridges yet to be crossed, some time away," he said. Daryl Kimball, executive director of the Arms Control Association, said he expects the missile defense review to endorse an expanded role for missile defenses to counter certain Russian and Chinese missiles, especially those that could threaten U.S. allies in Asia and Europe. “This is likely to stimulate them to accelerate offensive missile programs, like hypersonic vehicles, that can evade our missile defense,” Kimball said. https://www.militarytimes.com/news/pentagon-congress/2019/01/16/us-considers-new-ways-to-detect-and-track-enemy-missiles

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  26 septembre 2018 | International, Terrestre

  LOCKHEED MARTIN RECEIVES $289 MILLION CONTRACT FOR HIGH MOBILITY ARTILLERY ROCKET SYSTEM LAUNCHERS

  DALLAS, Sept. 25, 2018 /PRNewswire/ -- The U.S. Army awarded Lockheed Martin (NYSE: LMT) a $289 million contract to produce High Mobility Artillery Rocket System (HIMARS) launchers and associated hardware. The contract calls for the production of 24 HIMARS launchers and associated equipment by July 2022. Lockheed Martin has delivered nearly 500 launchers for the U.S. Army and international customers. The HIMARS vehicles will be produced from the ground up at Lockheed Martin's award-winning Camden, Ark., Precision Fires Center of Excellence. HIMARS is a lightweight mobile launcher, transportable via C-130 and larger aircraft for rapid deployment, that fires Guided Multiple Launch Rocket System (GMLRS) rockets and Army Tactical Missile System (ATACMS) missiles. HIMARS consists of a launcher loader module and fire control system mounted on a five-ton truck chassis. A specialized armored cab provides additional protection to the three crew members that operate the system. Lockheed Martin's effectiveness and reliability combined with performance, interoperability, joint coalition operations and the added value of joint munitions procurement make HIMARS a sound option for nations seeking effective precision fires option for missions. For more than 40 years, Lockheed Martin has been the leading designer and manufacturer of long-range, surface-to-surface precision strike solutions, providing highly reliable, combat-proven systems like MLRS, HIMARS, ATACMS and GMLRS to domestic and international customers. For additional information, visit our website: www.lockheedmartin.com. About Lockheed Martin Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 100,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. This year the company received three Edison Awards for ground-breaking innovations in autonomy, satellite technology and directed energy. https://news.lockheedmartin.com/2018-09-25-Lockheed-Martin-Receives-289-Million-Contract-for-High-Mobility-Artillery-Rocket-System-Launchers