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A comment on China laying tracks for 1,000km/h maglev trains. Parent comment

Re:China laying tracks for 1,000km/h maglev trains by usrusr on Thursday October 03, 2019 @04:34PM (#21151864)
> only to stop 4-5 times along the way

That's the big one. What HSR needs is not even higher top speed but some control breakthrough that allows much higher train frequencies in order to cut down on stops via more trains that can serve more specialized connections (e.g. the local/through etc). No idea what that breakthrough might be, perhaps something as crazy as rocket-assisted emergency braking.

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Re:China laying tracks for 1,000km/h maglev trains by benibela on Thursday October 03, 2019 @05:21PM (#21152357)
this for example https://www.youtube.com/watch?v=p9Ig19gYP9o
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Re:China laying tracks for 1,000km/h maglev trains by adinobro on Friday October 04, 2019 @01:20AM (#21154994)
It really depends where you want to go.

If you go from Shanghai to Suzhou via HSR a train goes roughly every 15 minutes. Most trains going east go through Suzhou (since it is a major hub) and it is roughly 30 minutes away which is a decent distance so worth stopping for. The train only gets to maximum speed for about 15 minutes in the middle.

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Re:China laying tracks for 1,000km/h maglev trains by bob1029 on Thursday October 03, 2019 @06:16PM (#21152843)
Why not aero braking? You could install little flaps actuated with hydraulics along the train. This could probably be part of the normal braking system. The amount of drag produced by something like this at 1000kmh would likely be very substantial.
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Re:China laying tracks for 1,000km/h maglev trains by carstenhag on Thursday October 03, 2019 @11:52PM (#21154633)
You can't just add things to the outside of a train, as you have a certain "gauge" (Not sure if that's the word for it) on a track/tunnel/etc.
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Re:China laying tracks for 1,000km/h maglev trains by adrianN on Friday October 04, 2019 @01:40AM (#21155097)
You can when you build new lines for your maglev trains.
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Re:China laying tracks for 1,000km/h maglev trains by breakerbox on Thursday October 03, 2019 @07:42PM (#21153435)
To be honest, I think wind resistance would play a lot bigger factor than people give it credit for since its force scales nonlinearly with velocity.

At 1000 or even just 600 km/h, wind resistance would do some damage just by letting off the accelerator.

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