How to Reduce Air Drag for Vehicles?

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SUMMARY

This discussion focuses on methods to reduce air drag for vehicles to improve fuel efficiency. A proposed solution involves using an on-board high-voltage (HV) generator to charge metal plates on the vehicle, which would theoretically push away air molecules and reduce drag. However, participants challenge this idea, arguing that the energy required to power the HV generator may negate any potential fuel savings. A simpler alternative suggested is to drive at lower speeds to reduce air resistance.

PREREQUISITES
  • Understanding of aerodynamics and vehicle dynamics
  • Familiarity with high-voltage systems and their applications
  • Basic knowledge of energy conservation principles
  • Awareness of factors affecting fuel efficiency in vehicles
NEXT STEPS
  • Research the principles of vehicle aerodynamics and drag reduction techniques
  • Explore the efficiency of high-voltage systems in automotive applications
  • Investigate alternative methods for improving fuel efficiency, such as vehicle design modifications
  • Learn about the impact of speed on fuel consumption and drag
USEFUL FOR

Automotive engineers, vehicle designers, and anyone interested in improving vehicle fuel efficiency through aerodynamic enhancements.

4beowulf7
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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?

Greetings
 
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4beowulf7 said:
Now the plates push the air molecules away so they can never hit the metal plates.
Both generates a force on the plates.
 
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.
 
4beowulf7 said:
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?

Drive slower.

Zz.
 
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