New in 2019: Air Force looks for new bomb designs to fight Russia and China

Sur le même sujet

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  22 juin 2020 | International, Aérospatial

  Keep modernization of the Ground Based Strategic Deterrent program on track

  By: Former U.S. Air Force secretaries and chiefs of staff In 1959, the U.S. Air Force deployed its first intercontinental ballistic missile at Vandenberg Air Force Base in California. A year later, the Navy deployed its first submarine-launched ballistic missile aboard the submarine George Washington. These systems, together with the Air Force's nuclear-capable bomber force, formed the United States' nuclear deterrence capability, which came to be known as the “triad.” The triad has been the foundation of U.S. national security policy for over 60 years, providing stability to America's global military operations and diplomacy efforts. The triad — and the security umbrella it extends to our allies and partners — has fostered decades of peace and prosperity. Nuclear deterrence has successfully prevented crises from escalating to conflicts and promoted cooperation and diplomacy in resolving disputes. Today, nuclear deterrence is more important than ever, which is why we must prioritize efforts to modernize the triad. Throughout the Cold War and into the 21st century, military and political leaders have worked together to maintain a credible, safe and reliable nuclear deterrence capability. As technologies and threats evolve, so has the triad. Over the years, each leg has been modernized several times. Currently, the Air Force is developing the B-21 long-range strike bomber, which will enter service later this decade, and the Navy is replacing its fleet of ballistic missile submarines with the Columbia class, scheduled to begin patrols in 2031. A replacement is also needed for the Minuteman ICBM system, which first entered service in 1962 and has been upgraded and extended 40 years beyond its original service life. In 2010, after affirming the importance of maintaining a land-based leg, the Obama administration initiated the Ground Based Strategic Deterrent program, a modern ICBM system that will improve reliability, lower operational costs, and respond to current and future threats. The Air Force will soon begin work on GBSD, which will enter service in 2029. Over 10 years of planning have led to this goal, with the program's necessity validated by two presidential administrations, six congresses and six secretaries of defense. ICBMs are an integral part of the triad, providing complementary capabilities to the sea-based and bomber legs that enhance our overall deterrence posture. For example, land-based missiles are the most robust and stabilizing leg of the triad. Consisting of 400 active, hardened missile launch facilities on sovereign U.S. soil and dispersed over 30,000 square miles, ICBMs pose a nearly insurmountable obstacle to those who wish us harm. They prevent any rational adversary from credibly threatening or confidently planning a strike. Failing to adequately maintain the land-based leg of the triad by fully funding the GBSD would threaten strategic stability and make remaining U.S. nuclear forces more vulnerable. America's ICBM force is both affordable and cost-effective — it features the lowest annual sustainment and recapitalization costs compared to the other two legs. It is vital the nation maintain its nuclear force posture, which has acted as a stabilizing element of global security for decades. Modernizing the triad is no small undertaking, and our current modernization efforts are the result of decades of careful planning and bipartisan support. Stewardship is handed down from one set of leaders to the next, and in this critical moment of transition it is imperative our current leaders keep these modernization programs on track. We strongly recommend that members of Congress support moving ahead with the GBSD program so it can join the other legs in providing effective deterrence for decades to come. The contributors to this commentary are: Former U.S. Air Force Secretaries Sheila Widnall, Whitten Peters, James Roche, Michael Wynne, Michael Donley and Deborah Lee James, as well as former U.S. Air Force Chiefs of Staff Gen. Larry Welch, Gen. Merrill McPeak, Gen. Ronald Fogleman, Gen. Michael Ryan, Gen. John Jumper and Gen. T. Michael Moseley. https://www.defensenews.com/opinion/commentary/2020/06/19/keep-modernization-of-the-ground-based-strategic-deterrent-program-on-track/

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  23 juin 2021 | International, Aérospatial, Naval, Terrestre, C4ISR, Sécurité

  Contracts for June 21, 2021

  Today

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  15 janvier 2021 | International, Aérospatial

  L3Harris to build prototype satellite capable of tracking hypersonic weapons

  Nathan Strout WASHINGTON — The Missile Defense Agency awarded L3Harris Technologies a $121 million contract to build a prototype satellite capable of tracking hypersonic weapons, the agency announced Jan. 14. Under the contract, L3Harris is tasked with building an on-orbit prototype demonstration for the agency's Hypersonic and Ballistic Tracking Space Sensor, a proliferated constellation in low Earth orbit that is capable of detecting and tracking hypersonic weapons. The constellation is designed to fill the gap in the country's missile defense architecture created by hypersonic weapons, which are dimmer than traditional ballistic missiles, making them harder to see with the nation's infrared sensors based in geosynchronous orbit. In addition, they are able to maneuver around terrestrial sensors. With China and Russia developing these weapons, the Department of Defense is eager to develop a new constellation that can detect and track the threats anywhere in the world. And so is Congress — in December lawmakers set aside $130 million to fund the project. The HBTSS design solves the hypersonic weapon problem by placing the sensor much closer to the Earth's surface in the lower orbit, making it easier to see the threat. But because the sensors are closer to the Earth, they have a far more limited field of view than the sensors in geosynchronous orbit. In order to achieve global coverage, the Missile Defense Agency wants a proliferated constellation made up of dozens of satellites on orbit. L3Harris was one of four companies awarded $20 million contracts in 2019 to develop a prototype payload design and risk reduction demonstration for HBTSS, along with Northrop Grumman, Leidos and Raytheon Technologies. According to the initial contract announcements, work on those designs was due Oct. 31, 2020. With this most recent award, L3Harris has won the subsequent competition between the four companies to build the actual prototype. The company has also been selected to build satellites for the Space Development Agency that will track hypersonic threats and feed data to HBTSS. In October, L3Harris won a $193 million contract to build four of the agency's eight wide field of view (WFOV) satellites, with SpaceX building four more. According to Space Development Agency leaders, their satellites will work in conjunction with HBTSS satellites to track hypersonic threats. The WFOV satellites will provide initial detection and tracing of the weapons, passing custody from satellite to satellite as the threats traverse the globe. Then, the WFOV satellites will pass custody to the medium field of view HBTSS satellites, which can provide targeting solutions with their more accurate sensors. The WFOV satellites are scheduled for launch as early as September 2022. Work on the HBTSS prototype contract will be complete in July 2023. https://www.c4isrnet.com/battlefield-tech/space/2021/01/14/l3harris-to-build-prototype-satellite-capable-of-tracking-hypersonic-weapons