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Someone should tell China they are doing it all wrong. (hexbear.net)

submitted 10 months ago by [email protected] to c/[email protected]

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[–] [email protected] 37 points 10 months ago (1 children)

If anyone can prove me wrong and build a viable vacuum train, it'll be CRCC.

[+] [email protected] 28 points 10 months ago* (last edited 5 months ago) (3 children)

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[–] [email protected] 40 points 10 months ago (1 children)

They did it at CERN, but the maximum passenger size is a few dozen femtometers, and collisions are common

[–] [email protected] 4 points 10 months ago

and collisions are common

aren't collisions kind of the point? thonk

[–] [email protected] 13 points 10 months ago

I am deeply skeptical as well. But again, if anyone can do it, it'll be CRCC.

[–] [email protected] 13 points 10 months ago

I also think it will be incredibly difficult and maintenance intensive to keep any structure that size at near vacuum.

I think there may be a break even point between cost and effect where removing enough air to reduce (but not even close to eliminate) drag is worth the trouble though. Very large clean zone manufacturing facilities are routinely kept slightly above outside ambient pressure to prevent dust/moisture/insects from getting in.