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Sep 5, 2017 at 8:55 comment added Nahshon paz +1 for glowing from friction! Gives the whole thing a weapon-of-the-future look. "What's that glowing thing coming our way from the sky? Is it a bird? Is it a plane? Does it come in peace?"
Sep 3, 2017 at 13:23 comment added o.m. @Nahshonpaz, in order to reduce the impact time that much, the muzzle velocity might have to be roughly on the same order as the orbital velocity. Superguns tried to launch comparatively small saboted projectiles, which might be comparable in size to a railgun slug. Re tracking, I wonder if the slug would glow from air friction ...
Sep 3, 2017 at 10:28 comment added Nahshon paz "use a railgun on a sat to quickly "de-orbit" a KE projectile, but the bang isn't from the railgun." - The gun could cut the time of impact by minutes. "run into all the problems of a "supergun" project." - Those project were aimed at launching larger sized objects into orbit. Won't a small slug be easier to shoot? But never mind all that - will there be a way to detect and evade on time? I'm thinking that railgun small slugs can be effective against satellites because it's hard to determine that they're headed towards a specific satellite.
Sep 3, 2017 at 9:41 history answered o.m. CC BY-SA 3.0