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Magnetic Levitation

By,

Gouthami

Soujanya

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ABSTRACT

It deploys electricity in electromagnets in an extraordinarily

efficient manner, rather than using as a fuel source coal, gas oroil-- can be one-half that of conventional rail.

By employing no wheels, maglev eliminates the friction, andconcomitant heat, associated with conventional wheel-on-railtrain configurations.

Driving without wheels, Flying without wings dealswith the present scenario of magnetic levitation(maglev) with Linear induction motor (LIM)

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1750 John Mitchell conducted the

first experiments measuring the

magnetic forces between the poles of amagnet . The principle of magnetic

force is critical to Maglev train

operation. 1900 Robert Goddard and Emile

Bachelet conceive the concept of

frictionless trains.

history

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history

1970 German and Japanese engineers start

research and development towards their

versions of Maglev technology.

1969 American scientist James R. Powell

and Gordan T. Danby patented the first design

for Maglev trains.

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INTRODUCTION

Development of magnetic levitatedtransport systems is under progress indeveloped countries and it is just a matter

of time they make inroads to India aswell.

Therefore, it will be interesting to knowabout the science and technology behind

mass ground transport system known as"magnetic flight".

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DRIVING WITHOUT

WHEELS,

FLYING WITHOUTWINGS

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MAGNETIC LEVITATION

Launching systemswould use magnetic

fields to levitate andaccelerate a vehiclealong a track .

Reaching the end of

the track, thevehicle could switchto more conventionalrocket engines.

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MAGNETIC LEVITATION

Diamagnetism is a very weak form ofmagnetism that is only exhibited in thepresence of an external magnetic field.

The induced magnetic moment is very

small and in a direction opposite to thatof the applied field.

When placed between the poles of a

strong electromagnet, diamagneticmaterials are attracted towards regionswhere the magnetic field is weak.

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oDiamagnetism can be used to levitate light piecesof pyrolytic graphite or bismuth above a moderatelystrong permanent magnet.

oSuperconductors are perfect diamagnets.

oThe magnet is held at a fixed distance from thesuperconductor or vice versa.

oThis is the principle in place behind EDS maglevtrains.

MAGNETIC LEVITATION

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ELCTROMAGNETIC LEVITATIONThe principle two systems: EMS- attractive

and EDS-repulsive, respectively.

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CHOICE OF LINEAR ELECTRIC MOTOR

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Applications

Being is pursuing research in Maglev toprovide a Hypersonic Ground Test Facilityfor the Air Force.NASA plans to use magnetic levitationfor launching of space vehicles into low

earth orbit.The mining industry will also benefitfrom Maglev.

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N FITS

30% less energy than a high-speed train

operating costs are approximately half that of

conventional long-distance railroads. no fuel to increase fire hazard

The materials used are non-combustible,

poor transmitters of heat, and able to

withstand fire penetration.

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BENEFITS

20 times safer than airplanes

250 times safer than conventional

railroads

700 times safer than automobile travel

A collision between two maglev trains is

nearly impossible

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CONCLUSION Research on this dream

train has been going onfor the last 30 odd yearsin various parts of the

world.

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Thank You