On Wednesday, December 30, 2015 at 8:54:05 AM UTC-5, Jeff Findley wrote:
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
--

well space X has cut the cost of cargo to orbit substantilly. and elon wants to go to mars in his lifetime

and the proposed vasmir engine can cut the cost and flying time to mars.

it would accelerate 12 half way to mars, then turn around and decelerate the other half of the flight.

now lets compare space x with SLS orion, at one3 billion per flight, not including payload....