Figure out the initial mass in LEO required for a human mission to Mars.
(assuming its manned).
Quote from: ciscosdad on 02/20/2013 10:43 pm(assuming its manned).They are sufficiently vague about that aren't they?Maybe it's something else...
Landing and ascent is out of the picture for 2018, manned or unmanned.
Quote from: Robotbeat on 02/21/2013 05:37 amLanding and ascent is out of the picture for 2018, manned or unmanned.Why?
* Bigelow hab module;* Hydrolox kick stage (maybe a dual-engine Centaur as per Golden Spike's idea);* SEP sustainer;* Remote assembly at EML-2;* CST-100 or Dragon CRV, launched to EML-2 by Falcon Heavy.... it's their lives and money to risk.