Author Topic: Maglev train, anyone?  (Read 5576 times)

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Offline Vegard Stornes Farstad

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Maglev train, anyone?
« on: Wed 2011-06-22 16:43 »
A well used maglev train is looking for a nice owner who can put it to good use:

http://www.bbc.co.uk/news/uk-england-birmingham-13872105

Sounds like a science centre or museum exhibit to me, and it could be the starting point for a good discussion among students on why Birmingham Airport decided to replace it with cable cars and what technological advances have been made and would be necessary to make maglevs more popular for smaller applications than the large high-speed trains we have already heard about. Do you know of any other small-scale maglev trains, either out of commission or in active operation?
Vegard Stornes Farstad, M.Sc.
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Offline Frederic Bouquet

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Re: Maglev train, anyone?
« Reply #1 on: Thu 2011-06-23 10:20 »

Not exactly a maglev (no magnetic field), but levitating nonetheless :

http://www.libeorleans.fr/libe/2010/01/dernier-a%C3%A9rotrain.html

(the video is close captionned in english)

This "train" was in direct competition with the French TGV (rapid train on rails); the latter won, the former disappeared...

Cheers,

Fred

Offline Vegard Stornes Farstad

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Re: Maglev train, anyone?
« Reply #2 on: Thu 2011-06-23 11:00 »

This "train" was in direct competition with the French TGV (rapid train on rails); the latter won, the former disappeared...


The Japanese have their own version that they claim have advantages over maglev trains:

http://www.news.com.au/travel/news/plane-crazy-levitating-train-takes-off/story-e6frfq80-1226055230419

What I don't understand is why maglevs cannot be designed to take advantage of the same effect. No reason why propellers must be used in combination with the ground-effect principle, is there?
Vegard Stornes Farstad, M.Sc.
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Offline Frederic Bouquet

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Re: Maglev train, anyone?
« Reply #3 on: Mon 2011-06-27 14:07 »
[...]
What I don't understand is why maglevs cannot be designed to take advantage of the same effect. No reason why propellers must be used in combination with the ground-effect principle, is there?

Well, Maglev means magnetic levitating (train) ; there is no use of magnetic levitation if you use the ground effect principle I guess. Now you could use propellers as a way to provide thrust to a maglev, that is a question of engineering the optimal solution.

Fred (a bit out of my expertise though)


Offline Vegard Stornes Farstad

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Re: Maglev train, anyone?
« Reply #4 on: Mon 2011-06-27 22:02 »

Well, Maglev means magnetic levitating (train) ; there is no use of magnetic levitation if you use the ground effect principle I guess. Now you could use propellers as a way to provide thrust to a maglev, that is a question of engineering the optimal solution.


I meant that a maglev train which also was designed to use the ground effect would use less power for the maglev part to stay afloat, it would simply be a more efficient maglev. And yes, maglev and "magprop" (magnetic propulsion) are separate systems as far as I have understood, but I also believe that you can find some designs that combine the repulsion upwards with repulsion/attraction forwards (using AC). I am even more out of my depth here, but in any case I think it would make sense to use aerodynamics optimally for a maglev as for any other train. And in the case of a floating train (maglev), the ground effect would be useful - unlike for regular trains and F1 cars, where they have to be careful NOT to lift off...
Vegard Stornes Farstad, M.Sc.
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