Magnetic-Levitation |
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| Superconducting Maglev Trains : | ||||
| While it is not practical to lay
down superconducting rails, it is possible to construct a
superconducting system onboard a train to repel
conventional rails below it. The train would have to be
moving to create the repulsion, but once moving would be
supported with very little friction. There would be
resistive loss of energy in the currents in the rails.
Ohanian reports an engineering assessment that such
superconducting trains would be much safer than
conventional rail systems at 200 km/h. A Japanese magnetically levitated train set a speed record of 321 mi/h in 1979 using superconducting magnets on board the train. The magnets induce currents in the rails below them, causing a repulsion which suspends the train above the track. |
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http://hyperphysics.phy-astr.gsu.edu/hbase/solids/scapp.html |
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