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#26 2018-07-29 19:25:32

louis
Member
From: UK
Registered: 2008-03-24
Posts: 3,590

Re: Key Debates

Very much a chicken and egg situation I think, GW.  Because Space X are sending a big BFR to Mars, they need to put in place propellant production - they can't just drop 1000 tonnes of propellant to the surface! So that will certainly dominate what is done on Mission One if Space X succeed in taking their project forward...but on the other hand the fact that they can deliver so much tonnage to the surface from the get-go means they have a lot of flexibility about what they might attempt on Mission One - a whole range of scientific experiments, some initial hydroponic agriculture, some rover exploration, use of rocket hoppers etc. 

GW Johnson wrote:

To answer Spacenut in post 22:  it depends upon what resources you think you need while you are there.  Could be ice,  could be a lot more.

To answer RobertDyck in #23 and Spacenut in #24:  What I pointed out was that your mission architecture and vehicle designs are utterly driven by what you intend to accomplish while you are there.  This is further constrained by the expense and difficulty of even making just one trip. 

What that really means is that "what you intend to do while there" REALLY IS a fundamental debate item!  It's probably the prerequisite for all the others!

GW


Let's Go to Mars...Google on: Fast Track to Mars blogspot.com

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#27 2018-07-29 20:17:09

kbd512
Member
Registered: 2015-01-02
Posts: 1,813

Re: Key Debates

Louis,

You have to hand wave a lot of fundamental problems with the BFR / BFS to believe that this idea will work without extensive testing and development, and likely modification to deal with reality.  Apart from supersonic retro-propulsion and reuse of rocket boosters, there's been very little of that to date.  Is it possible that all of that will work without any snags?  Sure.  From all past space exploration and aerospace technology development endeavors, how likely is that to happen?  Name off a significant multi-disciplinary technology development program where everything went according to plan.

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#28 2018-07-29 20:22:39

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 12,211

Re: Key Debates

Lious your post for BFR really is the post 1 indicated 1, 5, 7, 10, 11 for hopes and dreams but we agree on that we should be going to mars.

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#29 2018-07-30 19:11:17

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 12,211

Re: Key Debates

I do believe that scale of size is an issue as we are still no closer to being able to land 1 person and returning versus  any number in between that of a cool 100 that a projected BFR would be plausible to do.

Solve the equations for 1 or 2 crewmen and lets go to mars to continue to push us outward to other places and not just mars.

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