Train as Fast as Planes?

It’s a train as fast as airplanes. This is maglev, or magnetic levitation, a system of transportation that suspends and propels vehicles, typically train, at high speed. To achieve this, it applied two well-known maglev technologies—electromagenetic suspension and electrodynamic suspension, both of which utilize a large number of magnets for lift and propulsion. As a general rule, when two large magnets have relative movement, the magnetic induction lines are cut, generating electricity that propels the train at high speed without friction between train and track. This method has the potential to be faster and quieter than conventional transit systems.

The maglev has many advantages as well as disadvantages over the conventional train systems and airplanes. Because there is no friction between train and track, the maglev experience only air resistance and electromagnetic drag, which improves power efficiency. Besides, when maglev train is running, fewer noise is produced compared to traditional train systems since the only source of noise comes from the displacement of air. Moreover, electric trains release little carbon dioxide compared to airplanes which is environmentally friendly. The most exhilarating advantage is that the maglev is always punctual due to high speed.

Despite the advantages, the maglev has some shortcomings. The maglev train isn’t compatible with the conventional train track. Large expenditure has to be spent on building the track specifically designed for maglev. For most of the countries, city planner would rather use the TGV (French for “high speed train”).

The most notable commercial implementation of maglev train is probably the Transrapid train in Shanghai built by German, which achieves a top speed of 431 km/h (268 mph), averaging 250 km/h (160 mph). Sitting on the stable train and watching the prosperity outside the train, I expect one day this technology will benefit human beings all over the world.