30-08-2017, 01:33 PM
Maglev (derived from magnetic levitation) is a public transport technology that uses magnetic levitation to move vehicles without making contact with the ground or an electric pickup. Maglev competes with high-speed rail and airlines.
In itself, maglev technology eliminates moving parts, allowing vehicles to move more smoothly and more quietly than wheeled transport. A vehicle travels along a guide provided with magnets to control flight stability and to create propulsion and elevation, eliminating the mechanical limitations of dry friction. In the case of conventional high-speed trains, wear of the wheels on the rails and in the electric pickup limit the higher speeds.
Maglev vehicles have the speed record for trains. In practice, as with all high-speed transport, the acceleration and deceleration time allows fewer stops if superior upper speeds are to be effectively used. In the case of maglev, acceleration and deceleration are essentially limited by the well-being and safety of passengers.
The energy required for levitation is usually not a large percentage of the total energy consumption of a high-speed maglev system that is going to exceed the resistance, which makes all terrestrial transport exponentially more energy intensive at higher speeds high Vactrain technology has been proposed as a means to overcome this limitation.
Maglev systems have been much more expensive to build than conventional train systems, although the simpler construction of maglev vehicles makes them cheaper to manufacture and maintain. Despite more than a century of research and development, maglev transport systems are operating in only three countries (Japan, South Korea and China). The incremental benefits of maglev technology have often been difficult to justify against cost and risk, especially when there is an existing or proposed high-speed conventional train line with spare passenger carrying capacity, such as continental Europe, United Kingdom United Kingdom and Japan.
In itself, maglev technology eliminates moving parts, allowing vehicles to move more smoothly and more quietly than wheeled transport. A vehicle travels along a guide provided with magnets to control flight stability and to create propulsion and elevation, eliminating the mechanical limitations of dry friction. In the case of conventional high-speed trains, wear of the wheels on the rails and in the electric pickup limit the higher speeds.
Maglev vehicles have the speed record for trains. In practice, as with all high-speed transport, the acceleration and deceleration time allows fewer stops if superior upper speeds are to be effectively used. In the case of maglev, acceleration and deceleration are essentially limited by the well-being and safety of passengers.
The energy required for levitation is usually not a large percentage of the total energy consumption of a high-speed maglev system that is going to exceed the resistance, which makes all terrestrial transport exponentially more energy intensive at higher speeds high Vactrain technology has been proposed as a means to overcome this limitation.
Maglev systems have been much more expensive to build than conventional train systems, although the simpler construction of maglev vehicles makes them cheaper to manufacture and maintain. Despite more than a century of research and development, maglev transport systems are operating in only three countries (Japan, South Korea and China). The incremental benefits of maglev technology have often been difficult to justify against cost and risk, especially when there is an existing or proposed high-speed conventional train line with spare passenger carrying capacity, such as continental Europe, United Kingdom United Kingdom and Japan.