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B How to Reduce Air Drag for Vehicles?

  1. Jul 27, 2015 #1
    Hello everyone!

    I was thinking about how to reduce air drag for a vehicle so that one gets better mileage.

    Here is the definition of the problem:
    A moving car faces air drag especially at high speed. The resistance of the air layers would try to slow down the car. In order to maintain the same speed, the driver has to press the gas pedal continuously. So, if the air drag can be reduced, the mileage would improve.

    So how can we reduce air drag?

    What if an on-board high-voltage (HV) generator is used?

    The HV generator charges the strategically located metal plates over the vehicle of interest. When the plates are positively charged, the air molecules in the vicinity of the plates are also positively charged (electrons pass to the plates leaving positively charged air molecules behind). Now the plates push the air molecules away so they can never hit the metal plates. Therefore, it is possible to reduce the air drag for a vehicle by using this technique.

    What do you think?

  2. jcsd
  3. Jul 27, 2015 #2


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    Both generates a force on the plates.
  4. Jul 27, 2015 #3


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    Gold Member

    I don't see how that would reduce drag. Even if it did, you are now using probably all of your power savings from the drag to supply power for your electrodes.
  5. Jul 27, 2015 #4


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    Drive slower.

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