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Magnetic levitation can be stabilised using different techniques; here rotation (spin) is used. Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces. [2]
The National Maglev Initiative (NMI) was a research program undertaken in the early 1990s by the United States Department of Transportation, U.S. Army Corps of Engineers, Department of Energy, and other agencies which studied magnetically levitated, or "maglev", train technology, operating at speeds around 300 miles per hour (480 km/h).
The Bavarian government signed a contract with Deutsche Bahn and Transrapid with Siemens and ThyssenKrupp for the 1.85 billion-euro ($2.6 billion) project. [10] However, the project was strongly opposed by Christian Ude, the mayor of Munich. On 27 March 2008, the German government scrapped the project because of a massive cost overrun. [11]
Transrapid 09 at the Emsland test facility in Lower Saxony, Germany A full trip on the Shanghai Transrapid maglev train Example of low-speed urban maglev system, Linimo. Maglev (derived from magnetic levitation) is a system of rail transport whose rolling stock is levitated by electromagnets rather than rolled on wheels, eliminating rolling resistance.
Electromagnetic suspension (EMS) is the magnetic levitation of an object achieved by constantly altering the strength of a magnetic field produced by electromagnets using a feedback loop. In most cases the levitation effect is mostly due to permanent magnets as they have no power dissipation, with electromagnets only used to stabilise the effect.
Magnetic field lines, represented as arrows, are excluded from a superconductor when it is below its critical temperature. In condensed-matter physics , the Meissner effect (or Meißner–Ochsenfeld effect ) is the expulsion of a magnetic field from a superconductor during its transition to the superconducting state when it is cooled below the ...
An electrodynamic wheel is a type of wheel proposed for use in electrodynamic levitation of the maglev train transport system. [1] [2] [3]Unlike a conventional wheel, an electrodynamic wheel has a rim studded with magnets of alternating poles.
It is a maglev (magnetic levitation) line using partly evacuated tubes or tunnels. Reduced air resistance could permit vactrains to travel at very high speeds with relatively little power—up to 6,400–8,000 km/h (4,000–5,000 mph). This is 5–6 times the speed of sound in Earth's atmosphere at sea level. [1]