Magnetically levitated vehicles are called maglev vehicles. Theprinciple of the repulsion of magnetic flux (Meissner effect) can beused in magnetic levitation applications. When a magnet is broughtnear a superconductor, there will be a repulsion and thesuperconductor tries to move away from the magnet. A cross sectional
view of maglev vehicle is shown in the figure. The coaches of the train do not slide over steel rails, but float ona four inch air cushion above the track, using superconductingmagnets. This eliminates loss due to friction and heat, allowing thetrain to reach high speeds of the order of 500 km/hr. The vehicle isalso provided with retractable wheels-similar to that of an airplane.With the wheels, the vehicle runs on the guideway the way the airplanedoes during its take off. Once it is levitated in air, the wheels areretracted into the body. While stopping, the wheels are drawn out andthe vehicle slowly settles on the guideway by running over a distance,as an airplane does while landing.
view of maglev vehicle is shown in the figure. The coaches of the train do not slide over steel rails, but float ona four inch air cushion above the track, using superconductingmagnets. This eliminates loss due to friction and heat, allowing thetrain to reach high speeds of the order of 500 km/hr. The vehicle isalso provided with retractable wheels-similar to that of an airplane.With the wheels, the vehicle runs on the guideway the way the airplanedoes during its take off. Once it is levitated in air, the wheels areretracted into the body. While stopping, the wheels are drawn out andthe vehicle slowly settles on the guideway by running over a distance,as an airplane does while landing.
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