Yeah, gotta call BS on this one. The speed cited would cause the platform to disintegrate or melt. The shock wave would cause catastrophic damage.
How controllable would it be flying at 4600 mph through dense atmosphere ? I am guessing it would have to fly a predetermined path with no room for error if it’s to hit a tiny speck (aircraft carrier) in the middle of a vast ocean. Now couple that with ‘Soviet technology’ and it’s more likely to end up straight in the drink.
No, hypersonic missiles have been around for a long time. From 88 to 92 I worked with the National Aerospace Plane X-30. We had materials that would sustain well over Mach 10 that were SUPER lightweight.
Our problem was the scramjet that we couldn’t get above Mach 8 at the time. Since then, they’ve had a lot more success.
(Our goal was Mach 25!!)