re orbital repairstation in article c mtyj q well sf ca us collins well sf ca us steve collins writes the difficulties of a high isp otv include if you go solar you have to replace the arrays every trip with current technology you re assuming that go solar photovoltaic solar dynamic power turbo alternators doesn t have this problem it also has rather less air drag due to its higher efficiency which is a non trivial win for big solar plants at low altitude now you might have to replace the rest of the electronics fairly often unless you invest substantial amounts of mass in shielding nuclear power sources are strongly restricted by international treaty references such treaties have been proposed but as far as i know none of them has ever been negotiated or signed all work is one man s work henry spencer u of toronto zoology kipling henry zoo toronto edu utzoo henry
