To: Offshoreigor
I will answer you because you unloaded on me without telling me what it was that was not correct. True, I have never flown a small aircraft let alone placed the wing of my aircraft under or over the wing of another but what I was explaining is based on scientific principles formulated by Messrs. Bernoulli and Venturi. A more practical example of pressure differential is the development of downforce on a Formula 1 or CART racecar. If it were possible to reverse the car / road relationship the down force (up force) would be strong enough to drive the car upside down until it either slowed down or it ran out of fuel and then it would fall off the road.
Although I have never flown the above described aircraft I have put a lot of miles on the road and I am very careful when I pass a semi trailer and especially when one is coming from the opposite direction and the closing speed is well over 100 MPH. At that speed the pressure differential is even greater and depending on conditions can either blow you away from the semi or suck you into it. All of this is due to a differential of pressure. Whether you want to believe that or not is your business.
If you were responding to my comments about seeing it in the movies and on television then it is obvious that you missed my post above.
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The Cat