Right, AA cruisers and destroyers seem to be useless against hypersonics for the time being. Maybe at some future date they can be retrofitted with updated systems.
In what way? a hypersonic missile cant sea skimming as low or be as stealthy (becuse of the massive air friction at low attitude) as a subsonic missile. The hypersonic missile can cover the distant faster, but it will alos be detectedfurther out.
The missile is described as being like a meteor as it moves through the atmosphere, meaning that it is surrounded in a plasma turbulence that presumably absorbs radar and laser energy. IR tracking, as you suggest, can be from thousands of miles but the warhead is agile, so difficult to target with current missiles. The counter to these presumably may be to move more towards submersible fleet units (hypersonics are useless against subs) and smaller/unmanned cargo ships. Retire most of the carriers and rely on land based air power and precision standoff missiles.
Edited by glenn239, 14 January 2020 - 1054 AM.