Hacker News new | ask | show | jobs
by blibble 143 days ago
presumably the UK could figure out how to remove the top of a trident missile and replace it with a load of ball bearings
1 comments

Tridents can reach mach 19. Orbital velocity is more like mach 100.

Not that the UK manufactures trident missiles anyway.

27720km/h orbital velocity is Mach 22.4 at a sea level speed of sound
You don't need orbital velocity to blow satellites away. Just do a well-timed suborbital launch against the satellite's orbit, and the satellite will provide most of the kinetic energy.
Orbital velocity is nowhere near mach 100.
if only you could put some sort of explosive charge on the top