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China's hyperloop maglev train has achieved the fastest speed ever for a train at 623 km/h, as it prepares to test at up to 1,000 km/h in a 60km long hyperloop test tunnel. (robbreport.com)

submitted 9 months ago by Lugh to c/futurology

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[–] LostXOR@kbin.social 6 points 9 months ago* (last edited 9 months ago) (2 children)

I got an acceleration of 1.5G for the test, did you forget a factor of 2 or something? Still certainly not an enjoyable experience for passengers, but I assume it would accelerate over a much longer distance if a full track was built.

[–] threelonmusketeers@sh.itjust.works 4 points 9 months ago (1 children)

I think I'd probably be fine with 1.5Gs as long as the jerk and snap were low.

[–] LostXOR@kbin.social 2 points 9 months ago

Adding in Earth's gravity it's about 1.8G total, applied at a weird angle, which might be too much for some people.

[–] GbyBE@discuss.tchncs.de 2 points 9 months ago (1 children)

Did you also factor in that the train needs to come to a full stop in that 2km as well?

[–] LostXOR@kbin.social 2 points 9 months ago* (last edited 9 months ago)

Yes, I calculated the acceleration required to accelerate to 387MPH (173m/s) in 1km.
v^2 = 2ax
(173m/s)^2 = 2a(1000m)
a = 14.96m/s^2 = 1.53g