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Why are maglev trains still rare?
(lemmy.ml)
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this post was submitted on 08 Sep 2023
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Oh man yeah welded joints are just falling apart every week, it takes a fortune to upkeep some stationary metal.
I dont think you understand air's role in aerodynamics. At half atmosphere...you've plainly removed half the friction, there is half the air molecules to collide with the train. To give some perspective, all of the fastest manmade vehicles, by crazy high magnitudes of difference, are space vehicles. The ISS is whizzing around at nearly 5 miles a second in low earth orbit. Air is the limiting factor in speed. Its the only reason any additional fuel needs burning to maintain speed.
Finally...youre not gonna have a fire in a vacuum tube