posted on Oct, 11 2010 @ 09:26 AM
reply to post by Majestic RNA
I think the difference in efficiency between building the assembled craft on Earth as opposed to building it in orbit all depends on the size of the
craft.
For example, a small craft that is only going to the Moon and only needs to support 2 or 3 crew members for only a week or so would probably be best
assemble on Earth and launched directly to the Moon. However, larger craft with larger crews that are meant to support those crews for several weeks
or even months (such as an extended Moon mission or a Mars mission) would be built in space.
The tentative plans NASA has for a manned mission to Mars (as part of the nearly-defunct Constellation Program) includes assembling the Mars
"Cruise" spacecraft from multiple pieces that were sent into orbit using multiple launches of the Ares V heavy-lift cargo vehicle.