Quote:
Originally Posted by freebeard
At 2500mph the inside of the tube better be built to optical-level tolerances.
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It can't be and does not need to be.
The ground may not be 100% stable; then the tube will move. But even if it gets bored through solid rock then variances in tectonic stress and heat will cause slight deviations that would shake the capsule to bits at Mach 2.
All the tube needs is an automatically adjustable girder system to compensate for the deviations and some extra space to allow for those adjustments.
I think the hyperloop system is viable; not in the West or China, but on the moon, if we ever get a large human presence there.
Moon bases need to be built in tunnels: away from cosmic radiation, extremes in heat and cold and super abrasive moon dust.
A hyperloop at over mach 2 could even be used as a launch system on the moon, throwing materials from the moon into space at very low cost.
if we want to explore the wider solar system and beyond we should seriously consider a moon base with factories and hyperloop launcher as a stepping stone.
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