Mag Lev Demonstration


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Mag Lev Demonstration

  1. 1. Northport Middle School Technology Mr. Presti
  2. 2. <ul><li>MagLev stands for Magnetic Levitation. </li></ul><ul><li>Magnetic forces lift, propel and guide a vehicle over a guideway. </li></ul><ul><li>Utilizing special electrical power and control systems. </li></ul><ul><li>Uses electromagnets to push/pull train along guideway. </li></ul>
  3. 3. <ul><li>Reduce need for additional highways in major urban areas. </li></ul><ul><li>Needed for rail capacity and airport expansion. </li></ul><ul><li>Very little maintenance. </li></ul><ul><li>Very little friction </li></ul><ul><li>Uses 30% less energy than conventional rail systems. </li></ul>
  4. 4. <ul><li>High cost for initial start up. </li></ul><ul><li>Noise caused by air disturbance can be quite loud. </li></ul><ul><li>Exposure to higher gravitational forces. </li></ul><ul><li>Superconductor magnets need to be cooled due to the large amount of resistance. </li></ul>
  5. 5. <ul><li>Opposite attract, like poles repel. </li></ul><ul><li>North repels north, south attracts north. </li></ul><ul><li>Super fast electro-magnets switching poles thousands of time per minute. </li></ul><ul><li>Propel the train as well as levitate it off the track. </li></ul>
  6. 6. <ul><li>Current runs through a wire creates an electric field. </li></ul><ul><li>Guideway constantly changes magnetic fields. </li></ul><ul><li>North vs. South Polarity </li></ul>
  7. 8. German MagLev The bottom of the train wraps around steel guide ways.
  8. 9. Japanese MagLev The train levitates above railways nearly 4 inches from the ground.
  9. 10. <ul><li>Invented on Long Island in 1968 at Brookhaven National Laboratory. </li></ul><ul><li>Used mostly in Europe and Asia. (Germany,China and Japan) </li></ul><ul><li>Can reach speeds up to 350mph (1999) </li></ul><ul><li>Cities in U.S are researching methods to utilize MagLev. </li></ul>
  10. 11. What are Propellers? <ul><li>A device which provides thrust for propulsion of a vehicle such as an airplane, ship, or submarine though a fluid such as water or air, by rotating two or more twisted blades about a central shaft. </li></ul>
  11. 12. Propeller Pitch <ul><li>The theoretical travel of a propeller through one revolution. </li></ul><ul><li>Example: a 21&quot; pitch propeller moves approximately 21&quot; per revolution. </li></ul>
  12. 13. Propeller Rake <ul><li>Rake in a propeller is the angle of the blade forward or aft of the conventional position of 90 degrees or square with the propeller shaft. </li></ul>Forward Rake 0 Rake Aft Rake
  13. 14. Electricity <ul><li>Electricity is the flow or movement of electrons. Electricity is the most common form of energy that is used. All atoms have electrons. </li></ul><ul><li>In order to produce electricity, a generator must be used in order to get electrons moving. </li></ul>
  14. 15. AC and DC Currents <ul><li>DC Current- Batteries, fuel cells, and solar cells all use “Direct Current”. Current always flows in the same direction between those two terminals. </li></ul><ul><li>AC Current- The power that comes from a power plant is called “Alternating Current”. The direction of the current reverses, or alternates, 60 times per second. The power that is available at a wall socket in the United States is 120-volt, 60-cycle AC power. </li></ul>
  15. 16. Electricity Terminology <ul><li>A great way to understand electricity is to relate electricity to water. </li></ul><ul><li>Volts - The volume of electrons that are moving. “Volts is equivalent to the water pressure” </li></ul><ul><li>Amp - The amount of electrons that are moving. “Amps is equal to the flow rate of water” </li></ul><ul><li>Resistance - The amount of electrons that pass through. “Resistance is equal to the pipe size” </li></ul>
  16. 17. Electricity Equation <ul><li>There is a basic equation in electrical engineering that states how the three terms relate. </li></ul><ul><li>V=IR or I=V/R or R=V/I </li></ul><ul><li>V= Voltage (Volts) </li></ul><ul><li>I = Current (Amps) </li></ul><ul><li>R= Resistance (Ohms) </li></ul><ul><li>Question- A small circuit has a Current of 3 amps and a Resistance of 20 ohms. What is the Voltage ? </li></ul>
  17. 18. <ul><li>You will build and design a scale Maglev model. </li></ul><ul><li>Your vehicle may be between 4 and 8 inches in length </li></ul><ul><li>You MagLev car must be propelled by an electric motor connected to a propeller. </li></ul><ul><li>. You may use only 4 magnets. </li></ul><ul><li>Your vehicle will be graded on speed and the completion of the portfolio. </li></ul><ul><li>Must be 100% levitating (No Sliding). </li></ul>
  18. 19. <ul><li>Project Grade #1 </li></ul><ul><li>Graphs – 20 Points </li></ul><ul><li>Sketches - 20 Points </li></ul><ul><li>Design Portfolio - 60 Points </li></ul><ul><li>Project Grade #2 </li></ul><ul><li>Construction/Innovation - 30 Points </li></ul><ul><li>Efficiency Score - 70 Points </li></ul>