He's trying to develop the 747 of Mars transports - when nobody has even done a DC-3 for Mars yet.
Personally I think that the span between what SpaceX is actually flying now on one end and ITS on the other end is so big that nobody really is convinced enough to give them the money to go there. And without money SpaceX will never get around to actually build ITS.
... and if you can go aluminum instead of composites things get much faster and easier...
Quote from: redliox on 02/16/2017 11:03 PMsmaller prototypeDepends on what you mean by this. It seems most people read this as a mature subscale system that is ready to take human to Mars, which is strange since in my mind a smaller prototype is something like DC-X or X-33, a test vehicle that is never meant for real missions.I think it's entirely possible they'll do small prototype vehicle which is used for pathfinding and testing, after all the Raptor being tested is already subscale, so in a sense they're already doing it. It is also possible they'll have to abandon the original ITS size and scale it back to say 1/3 of the original size, due to some constraints (funding, launch site availability, etc). What they will not do, in my opinion, is to develop a subscale fully mature ITS then goes on to develop a full scale ITS, it just serves no purpose and waste a lot of time and resources.
Quote from: uhuznaa on 02/17/2017 12:27 PM... and if you can go aluminum instead of composites things get much faster and easier...Is there any research or studies out there that support the idea that building the LH2 tank for SLS was any faster or substantially less expensive than building the LOX test article out of carbon composite?