搭载反高超弹头，美军选择使用AIM-174空射反导

Core Viewpoint - The U.S. Missile Defense Agency (MDA) has selected the AIM-174B "Fast Gun" long-range air-to-air missile equipped with a newly developed "wide-area effect" warhead as a key vehicle for hypersonic missile defense [1][3]. Group 1: Selection and Development - The MDA has chosen the air-launched version of the RIM-174 "Standard" SM-6, referred to as AIM-174B, for the development, testing, and deployment of a new warhead designed to defend against hypersonic missiles [3]. - The "Prototype Payload" solicitation document requires the development of a warhead capable of defending against high-speed maneuvering threats at sea, intended to complement existing interceptors like RIM-161 "Standard" SM-3 and RIM-174 "Standard" SM-6 [3][5]. - The solicitation targets small businesses to create a warhead adaptable to various launch platforms, with a particular emphasis on air-launch capabilities [3]. Group 2: Performance and Capabilities - The AIM-174, as a direct derivative of the ship/land-launched "Standard 6," has demonstrated effectiveness against maneuvering threats, high-speed targets, and medium-range ballistic missiles [5]. - The upgraded version of "Standard 6," Block IAU, has completed simulated tests against hypersonic targets and has been selected as a potential warhead carrier [5]. - The air-launched AIM-174, despite lacking the MK72 booster found in the ship-launched version, benefits from the initial speed and altitude provided by aircraft, making it a viable option for hypersonic missile defense [7]. Group 3: Strategic Importance - The air launch capability offers greater flexibility and defensive range, allowing for deployment on highly maneuverable platforms to execute expeditionary and homeland defense missions [7].