[ExI] How will air travel work in a green solar economy?
Robert G Kennedy III, PE
robot at ultimax.com
Tue Jul 15 19:22:42 UTC 2014
Keith Henson replied to John Clark:
> I don't know about getting power from L1, might be possible, might
> cost too much, but in any case, sunshades are a good idea even
> energy from them. The best part is that they can be reconfigured to
> warm the earth as well as cool it.
Yes, one of our selling points is that the scheme is reversible.
> The only problem I see with Dyson Dots is the amount of material
> needed, in the hundreds of millions of tons. That large even in the
> context of a power satellite project big enough to completely
> coal an oil. However, if we build the last half of the power
> satellites with material from the asteroids, then we can keep the
> mines going a few more decades and have all we need.
Yes, hundreds of Mt. Other than a first prototype article, we're not
thinking of boosting any of it off Earth. Too dang expensive. For a
project of this scale, it's off-world materials or nothing.
Now, I will concede that 2/3 of that mass in space is driven by the
power generation function we're piggybacking on the sunshade function.
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