[AR] Re: SSTO fuels (was Re: SSTO)

  • From: Henry Vanderbilt <hvanderbilt@xxxxxxxxxxxxxx>
  • To: arocket@xxxxxxxxxxxxx
  • Date: Thu, 15 Feb 2018 11:54:08 -0700

On 2/13/2018 7:14 PM, William Claybaugh wrote:

I have seen that paper.  For something as technically (much less economically) difficult as SSTO it seems a little light: even much more detailed analysis doesn’t often lead to much confidence that I ought to recommend dropping $20 or $40 billion on one solution over another.

My two cents worth: If fielding a useful SSTO space transport is costing you $20 to $40 billion, you're doing something very wrong.

That's the sort of price tag you get by farming it out to the existing cost-plus government aerospace houses, supervised by an existing high-overhead government R&D bureaucracy.

At the end of that process you may or may not get a useful space transport, but lots of people will have had decades of low-stress white-collar job security. Fine if that's your objective - typically if you're a Congressman and they're your constituents - if you actually care about building useful space transportation, not so much.

Done as previously described, build your own private team up doing methodical risk-reduction then development (as with SpaceX and Blue) it should be perhaps a tenth of that.

Henry V

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