Quote from: sevenperforce on 03/29/2016 11:56 pmHaven't worked out all the numbers yet but I'm not sure that EML-2 is optimum...why do you say that?Lowest delta-v to get to cis-Lunar rendezvous point and maximal access to surface, launch and return profile flexibility, future jump-off point for newly-refueled, inter-planetary spacecraft (heading for Europa, for instance)...Here I am assuming that the Moon is not the final destination (I.e., not flags and footprints), but a step in the direction(s) beyond.
Haven't worked out all the numbers yet but I'm not sure that EML-2 is optimum...why do you say that?
That 4.2 tonnes is probably just the mass of the capsule,