Protostome 4 hours ago

What am i missing here? physics hackers, please explain.

does their claim of reaching 8 km/s in earth's atomsphere make sense? how is it possible without an insane amount of energy?

Besides, how are you going to deliver this energy in such a short time without frying the entire system, we're talking probably 1000A+ currents flowing in insane voltages.

You'd rather use TNT or some high explosive, that's what is usually done with artillery, and even then you don't get close to 8 km/s as far as i know.