Maglevs
Magnetically levitated trains (maglevs) may be the transportation of the future because of their many advantages on modern transportation we use today. Maglevs are trains that run on magnets in a certain way so that they are equally levitated. They are a lot better than the trains we use today and run almost as fast as an airplane: 320 mph. Their maintenance is about 10 times less expensive than the trains today. Since a maglev has no wheels to run on a track, the tracks can't get worn out and have to be repaired. Also, these trains run on magnets, and therefore do not produce pollution, making them much more environmentally safe. There are two types of maglevs; a superconducting maglev and an electromagnetic maglev. Electromagnetic ones will most likely be used more than the superconducting ones. (How Things Work) Electromagnetic maglevs are faster and have easier formulas than superconducting maglevs.(World Book) An electromagnet is a direct magnetic field produced b
Therefore, a superconducting maglev is better for the environment than an electromagnetic one, although both of them are still very preservative of pollution and are better than the trains used today. Although this is a great invention and good for the environment, the cost to build these vehicles is quite expensive. Scientists in Germany and Japan are working on maglevs trains to be commercially used in about 2005. But the downside to a superconducting maglev is that it only runs a centimeter above the track and at a slower speed of 280 mph. Before the train can levitate it has to reach a speed of 60 mph, so it has pairs of rubber wheels to let it run on the rail until it takes off. The electromagnets can be turned on and off by switching the electricity running through it on and off. The bottom of the train wraps itself around the bottom side of the rail. y an electric current where it can be turned on and off because of the close relationship between electricity and magnetism. Therefore, the train runs along a guide rail supplied with electromagnets all along it. In order for the train to move forward, the magnets have to create a magnetic field to push it forward. The train rails are approximately $10,000,000 per mile, but it is predicted that the cost of this will go down by 2005 because the materials to build this will be more suppliant. (How Things Work) The electromagnetic maglev rides along on a guide rail with electromagnets of the opposite pole that is on the train itself. In order to know when to turn on and off certain magnets, there has to be feedback. From this, one can conclude how the train works. Feedback is what shows the current status off the train's stability, and from that the controller of the magnets can adjust them so that the trains stay on a stable equilibrium.
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Acceptance Essays
