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Nov 4, 2016 at 1:23 comment added MolbOrg Efficiency for one stage rocket grows up 1/5 (payload/initial mass) and then it begins to drop.
Nov 3, 2016 at 17:38 comment added Ville Niemi @MolbOrg Not really (the efficiency still goes down, effectiveness is separate), but you do have a good point.The way kinetic energy scales with velocity could very well lead to situations where you need some specific terminal velocity for sure kill. But that would probably be solved with a separate terminal stage making a very fast sprint. Or the classic nuclear pumped x-ray laser.
Nov 3, 2016 at 1:25 comment added MolbOrg So more delta-v your rocket has the less efficient it is. - if under "actual payload" we mean destruction force in form of kinetic energy, then that sentence is incorrect.
Nov 2, 2016 at 23:32 history answered Ville Niemi CC BY-SA 3.0