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The Shanghai airport maglev used to go around that speed too (~430km/h) over twenty years ago. But these new trains are regular trains running on regular (but
by comrade1234 8mo ago
The Shanghai airport maglev used to go around that speed too (~430km/h) over twenty years ago. But these new trains are regular trains running on regular (but specialized and high quality) tracks. There's probably no more need for maglev now that you can run on regular (well not exactly) tracks.
- alexpotato 8mo agoAt these speeds, how are they guaranteeing that the tracks are in PERFECT working order? e.g. even a small earthquake that shifts the tracks a few inches would probably cause, at minimum, a degradation in service.
- thenthenthen 8mo agoThere are high fps cameras that monitor the overhead lines on every carriage, maybe also pointing at the rails? It is a engineering marvel though, the rides are so smooth, in my home country the trains have issues with leafs on the tracks … lol
- pixl97 8mo agoThis sounds like a Plainly Difficult moment.
- arethuza 8mo agoI suspect ~200 years ago in England people were saying pretty similar things!
- piva00 8mo agoJapan has solved that 60+ years ago in a much more seismically active zone, it's not a major issue.
- K0balt 8mo agoThat’s fascinating, what do they do?
- SapporoChris 8mo agoseismometers installed along the coast and near the tracks. Senses the earthquake and trains respond if necessary. I believe if the epicenter of the quake occurred directly under a moving train this system would fail(or too close react). However, that appears never to have happened and is probably extremely unlikely.
- api 8mo agoSensors all over the tracks? There’s probably many different sensor strategies you could use to detect imperfections. I know that modern roller coasters are outfitted with a bunch of stress, vibration, conductivity, etc sensors. There’s a theme park near me where huge fast roller coasters run all day every day all season. The speeds aren’t as high but I bet given the twists and turns the stresses and tolerances are worse.
- Animats 8mo agoIt does require really good maintenance-of-way work. Having all trains inspect the track is feasible. The latest round of Shinkansen trains does that. They're moving away from running a Dr. Yellow track inspection train every 10 days.[1] [1] https://www.railway.supply/n700s-trains-to-be-equipped-with-infrastructure-diagnostics-equipment/ https://www.railway.supply/n700s-trains-to-be-equipped-with-...
- expedition32 8mo agoIn my country there are special trains equiped with sensors that drive around at night to measure the tracks. Would have prevented that disaster in Spain.
- usrnm 8mo agoDid it? I took a ride on the Shanghai airport maglev around a month ago, and it never went above 300 km/h, which was a real bummer, to be honest.
- CorrectHorseBat 8mo agoI remember there were different speeds at different times last time I went, but it seems they reduced it in 2021 permanently. https://en.wikipedia.org/wiki/Shanghai_maglev_train https://en.wikipedia.org/wiki/Shanghai_maglev_train
- Cyuonut 8mo agoYes it did, at least earlier. I rode it in 2010.
- xenospn 8mo agoI was there 20 years ago and it was ~500km/h, if I remember correctly.