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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.
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.
On Earth, a mass-driver design could possibly use well-tested maglev components. To launch a space vehicle with humans on board, a mass driver's track would need to be almost 1000 kilometres long if providing almost all the velocity to Low Earth Orbit , though a lesser length could still provide major launch assist.
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]
Eric Roberts Laithwaite (14 June 1921 – 27 November 1997) was an English electrical engineer, known as the "Father of Maglev" [1] for his development of the linear induction motor and maglev rail system after Hermann Kemper's theories and after Charles Wheatstone's pioneering.
The maglev train was boarded according to usual routine. It left the station at 09:43 and firstly went for a brake test, then had to wait for clearance from the line dispatcher. The line dispatchers energized the tracks at 09:52 and one line dispatcher radioed the maglev train to proceed. No communication with the maintenance vehicle is recorded.
The institute maintains a website filled with data, charts, maps, photos and videos of several types of maglev technology being developed around the world. [6] NAMTI resources are used by transportation planners , engineering firms, and governments around the world considering new maglev transport projects.
It has an important bearing on construction costs and operating costs and, in combination with superelevation (difference in elevation of the two rails) in the case of train tracks, determines the maximum safe speed of a curve.