19-02-2013, 10:50 AM
MAGLEV TRAIN Guideway To The New Journey
MAGLEV TRAIN.pptx (Size: 97.71 KB / Downloads: 36)
ABSTRACT
Maglev concept was based on using lightweight, very high current superconducting loops suitably positioned on a streamlined vehicle.
As the vehicle moves along a guideway containing loops of ordinary aluminium wire at ambient temperature, the superconducting loops induce small electric currents in the guideway loops that are directly underneath them.
The magnetic interaction of the permanent currents in the superconducting loops with the induced currents in the guideway loops automatically levitates the vehicle.
If an external force (e.g. a wind gust, curve, or change in grade) acts on the vehicle, a magnetic force automatically and immediately develops to oppose the external force.
INTRODUCTION
Maglev = magnetic + levitation.
First described by Robert Goddard, American Rocket Scientist, 1909 Scientific American.
Next, 1912, French engineer, modeled it, Emile Bachelet, eddy-current repulsive levititation, amount of power needed too high to run… lack of funding.
PRESENT TRENDS
General Atomics has received US$90 million in research funding from the federal government. They are also looking to apply their technology to high-speed passenger services
Transrapid, a German maglev company, has a test track in Emsland with a total length of 31.5 km (19.6 mi).
Japan has a demonstration line in Yamanashi prefecture where test trains JR-Maglev MLX01 have reached 581 km/h (361 mph), slightly faster than any wheeled trains.
PROGRESS PLAN
The news last week that the U.S. government would distribute $90 million in grants for maglev planning studies excited those who see the technology as the future of transportation.
Germany advanced a proposal for a Berlin-Hamburg line, and then a project from Munich to its airport, but both corridors were canceled after the government refused to commit the necessary funds.
Executives at the Central Japan Railway Company have a huge ambition: to connect Tokyo and Osaka in one hour with a new 300 mph maglev system.
The first phase of the project could open by 2025 between Tokyo and Nagoya, but this segment alone would cost more than $50 billion to build.
CONCLUSION
They consume less energy.
Time consuming.
Move faster than normal trains because they are not affected by ground friction; their rights-of-way, meanwhile, cost about the same to build.
Incompatible with existing rail lines, unlike traditional high-speed rail.
Initial cost is very high.