A few weeks ago, before starting the study on the durability of aircraft carriers in the US Navy, Mark Esper, the Secretary of Defense of the United States, had publicly questioned the relevance of replacing, at the same budget, an aircraft carrier by a fleet of 100 or 200 hypersonic missiles to ensure the initial Defense of Japan or from South Korea. Obviously, the idea gained ground, since on the occasion of a Webcast with the association of the Air Force Mitchell Institute, Mark Lewis, the director of modernization of the deputy director of innovation Mark Griffin , announced the creation of a "war room" devoted solely to the rapid and massive entry into service of hypersonic weapons in the US armed forces.
The Pentagon is currently funding 3 families of programs to design, test and commission hypersonic weapons, depending on whether they are launched from the surface or from an aircraft, and whether they employ a rocket engine and a hypersonic glider, or an aerobic motor of the Scramjet type. For the time being, the aerobic family with surface launcher is not the subject of any development, at least in the public sphere. The work is divided between the US Air Force (ARRW program), the US Navy (CPS program), the US Army (LRHW program) and Darpa (HAWC and HSW-ab programs), which is currently the only one to develop aerobic programs.
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