Re: Inferno
Date: Tue, 14 Dec 2004 04:39:41 -0600
To: sci-space-tech@moderators.isc.org
Cray74@gmail.com wrote:
> Your point is only applicable to an extreme situation and trivializes
> the effort involved. It's kind of like saying, "If the US needed to put
> 10,000 tons in orbit in a couple of years, the challenges are not
> insurmountable."
No, it's nothing like that. Adding thousands of tons of titanium
manufacturing capacity is not an effort on the same scale as the
straw man you have just constructed. In fact, it would be a small
investment compared to what was invested in the shuttle program overall.
What we can conclude from the fact that they didn't do this is
not that making titanium is impossibly hard, but that the benefits
of that metal, if any, for the shuttle wouldn't have justified
the cost.
Paul
Relevant Pages
- Re: Establish demand
... mission delivered 30 tons to orbit, the cost per pound would be over ... falcon 9 series or a delta IV, that made deliveries for $4000/Kg, but ... Since demonstrably we do not yet have RLV technology, the rational approach indicated that we should first attempt less ambitious variations of existing ELV techniques, for instance, recovery of the first stages, demonstration of cryogenic expendable single stage to orbit, etc. ... For instance, when man rated EELVs dock with the space station, they already include the upper stage as payload, particularly with high energy cryogenic upper stages. ...
(sci.space.policy) - Re: Establish demand
... the total number of launches, almost 120, and pretending that each ... mission delivered 30 tons to orbit, the cost per pound would be over ... falcon 9 series or a delta IV, that made deliveries for $4000/Kg, but ... Since demonstrably we do not yet have RLV technology, the rational approach indicated that we should first attempt less ambitious variations of existing ELV techniques, for instance, recovery of the first stages, demonstration of cryogenic expendable single stage to orbit, etc. ...
(sci.space.policy) - Re: Establish demand
... the total number of launches, almost 120, and pretending that each ... mission delivered 30 tons to orbit, the cost per pound would be over ... falcon 9 series or a delta IV, that made deliveries for $4000/Kg, but ... Since demonstrably we do not yet have RLV technology, the rational approach indicated that we should first attempt less ambitious variations of existing ELV techniques, for instance, recovery of the first stages, demonstration of cryogenic expendable single stage to orbit, etc. ...
(sci.space.policy) - Re: A new space business
... watts anywhere its needed in the solar system. ... trillions of watts to vaporize controlle amounts of asteroids to which ... unassisted - diverting billions of tons of raw materials from the ... asteroid belt to Earth orbit. ...
(sci.space.policy) - Re: Burt Rutans plans for a manned mission to Mars
... so you presumably now have to lift hundreds of tons up ... into orbit and keep it there. ... :Rotovator modules made on earth. ... costs to get the thing in place amount to something like $2 billion. ...
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