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Defense Primer: Hypersonic Boost-Glide Weapons (CRS Report for Congress)

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Release Date Revised Nov. 1, 2024
Report Number IF11459
Report Type In Focus
Authors Kelley M. Sayler, Amy F. Woolf
Source Agency Congressional Research Service
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  • Premium   Revised Aug. 20, 2024 (3 pages, $24.95) add
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Summary:

The U.S. Department of Defense (DOD) is pursuing two types of hypersonic weapons technologies: boost-glide systems that place a maneuverable glide vehicle atop a ballistic missile or rocket booster, and cruise missiles that would use high-speed, air-breathing engines known as scramjets to travel to hypersonic speeds. This In Focus addresses only the first of these technologies. The Pentagon’s FY2025 budget request for hypersonic weapons was $6.9 billion (of a total $9.8 billion request for long-range fires), up from $4.7 billion in FY2023. The Pentagon declined to provide a breakout of funding for hypersonic weapons in FY2024, but it requested a total of $11 billion for long-range fires. Pentagon officials have stated that hypersonic weapons could attack priority targets promptly and with improved accuracy without facing defeat by an adversary’s air or missile defense systems. Pentagon officials have also expressed concerns about advances in hypersonic weapons technologies in Russia and China, as well as about the potential threats to U.S. forces, allies, and territory.