In article ,
ess says...

On 28/12/2015 1:10 PM, bob haller wrote:

elon musk has said he not only wants to go to mars, but start a settlement there.

given his big plans, i believe they will try to drive the price down, and whats his current price cut? its a lot

I ant to see what space x does to develop a fast transit to mars system.

cutting travel time from 6 or 7 months, tom 6 weeks will make mars so much more doable

Getting there in 6 weeks requires a huge delta-V - twice, and twice more
to get back in the same time. I don't see this coming about through
incremental improvements in existing rocket designs.

Do remember this is Bob. He has nothing to back up the above assertions
and hand waving. He just thinks Musk can do better than NASA and
guesses at numbers.

Jeff
--
"the perennial claim that hypersonic airbreathing propulsion would
magically make space launch cheaper is nonsense -- LOX is much cheaper
than advanced airbreathing engines, and so are the tanks to put it in
and the extra thrust to carry it." - Henry Spencer