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How to calculat fronatl area of scale car

  1. Sep 27, 2014 #1
    Hello guys, I am doing a wind tunnel and I want to calculate the aerodynamic coefficient of some cars. To calculate this I need the frontal area of the car and I don't know how to calculate it manual. Is there any pc program to do it or any formula? Thank you very much.
     
  2. jcsd
  3. Sep 27, 2014 #2

    SteamKing

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    If you don't have a drawing or a photograph of the front end of the test car, it's going to be a pretty difficult calculation.

    You can always measure the height and width of of the test car, calculate the area of the box, and apply a factor to account for the shape
    of the car, the open bits underneath, etc.
     
  4. Sep 28, 2014 #3

    FactChecker

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    I will assume that everyone has a digital camera these days, You could put the model car in front of a wall with dimensions marked and take a picture. Print the picture and cut out the car outline. Compare the weight of the car cut out with the weight of a known area cut out.
     
  5. Sep 28, 2014 #4

    boneh3ad

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    As long as your dimensions marked on the wall were suitably adjusted to account for perspective that would work.
     
  6. Sep 28, 2014 #5

    FactChecker

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    I think if the model car is against the wall and the camera is back a little. the effect of perspective will be minimal.
     
  7. Oct 5, 2014 #6

    jack action

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