{"id":37148,"date":"2024-05-15T12:45:20","date_gmt":"2024-05-15T12:45:20","guid":{"rendered":"https:\/\/one.sightlinemg.com\/c4isrnet\/uncategorized\/2024\/05\/15\/us-and-japan-sign-agreement-to-co-develop-hypersonic-interceptor\/"},"modified":"2026-08-08T01:05:59","modified_gmt":"2026-08-08T01:05:59","slug":"us-and-japan-sign-agreement-to-co-develop-hypersonic-interceptor","status":"publish","type":"post","link":"https:\/\/one.sightlinemg.com\/c4isrnet\/battlefield-tech\/hypersonics\/2024\/05\/15\/us-and-japan-sign-agreement-to-co-develop-hypersonic-interceptor\/","title":{"rendered":"US and Japan sign agreement to co-develop hypersonic interceptor"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">HONOLULU \u2014 The United States and Japan signed a cooperative agreement Wednesday to<a href=\"https:\/\/www.defensenews.com\/pentagon\/2023\/03\/20\/us-japan-exploring-partnership-on-hypersonic-missile-interceptor\/\" target=\"_blank\"> co-develop a hypersonic missile defense capability <\/a>designed to neutralize hypersonic threats in the glide phase of flight, according to May 15 statements from both the Missile Defense Agency and Japan\u2019s Defense Ministry.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The two countries have been in talks regarding the possibility for well over a year. The MDA is still early in the development process for the <a href=\"https:\/\/www.defensenews.com\/digital-show-dailies\/smd\/2022\/08\/12\/missile-defense-agency-priorities-include-hypersonics-guam-hill-says\/\" target=\"_blank\">Glide Phase Interceptor<\/a>, and the agency\u2019s budget plan envisions a <a href=\"https:\/\/www.defensenews.com\/naval\/2022\/02\/02\/budget-uncertainty-throttles-mdas-development-of-a-hypersonic-missile-interceptor\/\" target=\"_blank\">first fielding in the mid-2030s.<\/a> Two companies are competing to design GPI \u2013 <a href=\"https:\/\/www.defensenews.com\/pentagon\/2022\/06\/24\/raytheon-northrop-advance-in-competition-to-develop-hypersonic-weapons-interceptor\/\" target=\"_blank\">Raytheon Technologies and Northrop Grumman<\/a>. Each contractor won contracts in June 2022.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">During the Japan-U.S. summit meeting in August 2023, the governments announced they had begun working through a cooperative development agreement of GPI.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The interceptors will be designed to fit into the U.S. Navy\u2019s Aegis ballistic missile defense-equipped destroyers. The weapon will fire from the standard vertical launching system and be integrated with the modified Baseline 9 Aegis Weapon System that detects, tracks, controls and engages hypersonic threats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Defeating a hypersonic weapon in its glide-phase of flight is a challenging technical problem, as the missiles can travel more than five times the speed of sound and can maneuver in flight, making it hard to predict a missile\u2019s trajectory.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The GPI Cooperative Development Project Arrangement falls under the U.S.-Japan bilateral Memorandum of Understanding for Research, Development, Test and Evaluation projects, the U.S. government\u2019s statement notes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cBy pursuing an agreement on GPI development, the U.S. and Japan will strengthen regional deterrence while enhancing longstanding missile defense cooperation between the two countries,\u201d it states.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">MDA will continue to lead the development of GPI for the Defense Department. As part of the agreement, Japan will \u201clead the development of rocket motors and propulsion components of GPI,\u201d the U.S. statement says.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u201cIn recent years, missile-related technologies such as hypersonic weapons have been dramatically improved and significantly enhanced in terms of both quality and quantity in the vicinity of Japan,\u201d the Japanese MOD states in its own release. \u201cStrengthening interception capabilities against these missiles is an urgent issue.\u201d<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The U.S. and Japan have previously co-developed, through a similar arrangement, the Raytheon Technologies-manufactured SM-3 Block IIA missile.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">While the new cooperative agreement would deliver a GPI capability in the 2030s, Congress last year said, in the fiscal 2024 National Defense Authorization Act, that it <a href=\"https:\/\/www.defensenews.com\/pentagon\/2023\/12\/18\/congress-demands-quicker-fielding-of-hypersonic-weapons-interceptor\/\" target=\"_blank\">wanted to see MDA deliver an initial operational capability by the end of 2029 <\/a>with a full operational capability by 2032, with at least 24 GPIs delivered by 2040.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Japanese government has flagged hypersonic missile defense as an urgent capability, citing recent developments in the region.<\/p>\n","protected":false},"author":7,"featured_media":29272,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_canonical":"","_acf":"","_yoast_wpseo_primary_category":118,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_smg_distribution_targets":[]},"categories":[7,29,118],"tags":[],"coauthors":[3286],"class_list":["post-37148","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battlefield-tech","category-home","category-hypersonics"],"acf":{"subheadline":"","legacy_arc_id":"JDUBRNDNWVEIRJRJGX37CI4NC4","arc_canonical_url":"\/global\/asia-pacific\/2024\/05\/15\/us-and-japan-sign-agreement-to-co-develop-hypersonic-interceptor\/","remove_feature_photo":false,"is_sponsored":false,"subtype":"","redirect_url":"","disable_inline_ads":false,"native_logo_pretext":"Presented 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