Quote from: Rocket Science on 12/06/2012 06:28 pmGS gets a FAIL on mass communications for something so EPIC... .Well, it's out on yahoo news. Oh, and check out the first reader reactions, so encouraging... NOT.
GS gets a FAIL on mass communications for something so EPIC... .
http://goldenspikecompany.com/wp-content/uploads/2012/02/French-et-al.-Architecture-Paper-in-AIAA-Journal-of-Spacecraft-and-Rockets.pdf
Quote from: simonbp on 12/06/2012 06:57 pmhttp://goldenspikecompany.com/wp-content/uploads/2012/02/French-et-al.-Architecture-Paper-in-AIAA-Journal-of-Spacecraft-and-Rockets.pdfThe unpressurized lander seems like a really bad idea and I'm unsure how they will deal with radiation.
It is natural to examine why PSLR can be conducted so inexpensively compared to the Constellation Program’s former $150B lunar‐return price tag. Some reasons for this include:<4 bullets removed>- Efficient operations, focusing on the job itself, rather than on the number of jobs created.
So Centaur refuels itself from a drop tank? Is that really simpler/cheaper than just developing a stretched Centaur?
Unpressurized lander... I like it. Makes sense to separately land a semi-permanent habitat instead of lugging it around with you. This could reduce costs by a huge amount all by itself. Even more minimalistic than the LK lander...I'd bet they could get this down to fewer launches with just a little more development (Two Falcon Heavy launches, a hypergolic service module for Dragon), but to keep it only to currently used launch vehicles is smart.(Are we really sure the lander is unpressurized? Could be pressurized, just without an airlock.)