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Aerodynamics and aerofoils homework

  1. Jul 25, 2004 #1
    I'm doing a looong assignment on aerodynamics, and have just about completed it. There are four points, however, which I cannot explain which refer to aerofoils. They are:
    1. There is an upflow in air before contact is made with the aerofoil.
    2. There is a downflow after contact with the aerofoil.
    3. The air does not directly strike the airfoil, but divides just below the under surface.
    4. Above the aerofoil where the pressure is decreased, the streamlines are closer together.

    It would be very helpful if someone would be able to explain them for me.
    NB You must consider a diagram of an aerofoil. Try http://www.usd.edu/biol/faculty/swanson/ornith/pics/airfoil.gif
  2. jcsd
  3. Jul 26, 2004 #2
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