SAI SUJAN PIRIYA 3RD YEAR CIVIL ENGINEERING GRIET-HYDERABAD BULLET TRAINS IN INDIA SAI SUJAN PIRIYA 3RD YEAR CIVIL ENGINEERING GRIET-HYDERABAD

ABSTRACT Indian railway network is one of the biggest transportation network in India and  is the third largest railway network in the world. Mail/Express trains are Regular Express rail service of India. Express trains make small number of stops, unlike passenger trains. The Duronto Express trains introduced in 2009 (which run between major cities without any intermediate halts) are projected to be the fastest train in India introduced with a higher speed limit of 120-130 km/h. Bullet trains in India will become an engine of economic transformation in India . Track design for bullet trains is the biggest challenge .The scope of this presentation to present bullet track design and mechanism of it.

INTRODUCTION   Bullet train is a system of transportation that uses magnetic levitation to suspend, guide and propel vehicles from magnets rather than using mechanical methods, such as friction-reliant wheels, axles and bearings. Bullet train is a means of flying a vehicle or object along a guide way by using magnets to create both lift and thrust, albeit only a few inches above the guide way surface

TYPE OF MAGNET USED IN BULLET TRACK This train uses superconducting electric magnets in the vehicle to levitate and propel the train. These magnets are cooled by liquid helium or liquid nitrogen. This means that once electrified these magnets do not require additional energy.

MECHANISM The magnetized coil running along the track, called a guide way, allowing the train to levitate between 0.39 and 3.93 inches above the guide way. Once the train is levitated, power is supplied to the coils within the guide way walls to create a unique system of magnetic fields that pull and push the train along the guide way. The electric current supplied to the coils in the guide way walls is constantly alternating to change the polarity of the magnetized coils. This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust

SUPPORT SYSTEM The electromagnets on the underside of the train pull it up to the ferromagnetic stators on the track and levitate the train. The magnets on the side keep the train from moving from side to side. A computer changes the amount of current to keep the train 1 cm from the track.

BULLET TRAIN TECHNOLOGIES Electromagnetic suspension (EMS) Electro dynamic suspension (EDS)

ELECTROMAGNETIC SUSPENSION (EMS) In current electromagnetic suspension (EMS) systems, the train levitates above a steel rail while electromagnets, attached to the train, are oriented toward the rail from below. The system is typically arranged on a series of C-shaped arms, with the upper portion of the arm attached to the vehicle, and the lower inside edge containing the magnets. The rail is situated between the upper and lower edges.

ELECTRODYNAMIC SUSPENSION (EDS) In electrodynamics suspension (EDS), both the rail and the train exert a magnetic field, and the train is levitated by the repulsive force between these magnetic fields. The magnetic field in the train is produced by either superconducting magnets or by an array of permanent magnets . The repulsive force in the track is created by an induced magnetic field in wires or other conducting strips in the track.

PROPULSION An alternating current is ran through electromagnet coils on the guide walls of the guide way. This creates a magnetic field that attracts and repels the superconducting magnets on the train and propels the train forward. Braking is accomplished by sending an alternating current in the reverse direction so that it is slowed by attractive and repulsive forces.  

Bullet vs. Conventional Trains Bullet Trains Conventional Trains No Friction = Less Maintenance Routine Maintenance Needed No Engine = No fuel required Engine requires fossil fuels Speeds in excess of 300 mph Speeds up to 130 mph

BETTER FOR THE ENVIRONMENT Less energy consumption because no rail-track friction Requires no fossil fuel which can harm the environment. Less noise pollution since the train never hits the track MagLev guide ways and trains take up less space than conventional trains

VISION OF MAKE IN INDIA

PROPOSAL The proposed 534km Mumbai- Ahmedabad high-speed link, which is in early stage of development, will be India's maiden high- speed rail project. The decision to carry out its feasibility study was taken in September 2013. During the Indian prime minister's visit to Japan in My 2013, the prime ministers of both countries decided to co-finance a detailed joint feasibility study for the Mumbai- Ahmedabad HSR. The Japan Internal Cooperation Agency (JICA) was given the go-ahead for the study in September 2013.

SWOT ANALYSIS Fast growth in transportation industry economy Can provide word class amenities and experience to our Indian customers at a price of A/C first class and but reducing travel time by more than half. Lack of awareness about bullet trains in India Government Tax on project Track design of bullet trains should be given priority by Indian institutes

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