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From: "Marvin Kaye" <marv@lancaironline.net>
Subject: Re: Wing pressure
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Date: Fri, 02 Feb 2007 16:46:59 -0500
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Posted for "James H. Keyworth" <jhk@clearwire.net>:

  Paul says: The air inside the wing pushes up on the top surface at 40 PSF
  while it pushes down on the bottom surface at 20 PSF.
  
  Hey, c'mon Paul.  How can a gas in a closed container decide which way it's
  going to exert more pressure.  Can you blow up a round balloon so its bottom
  is a flatter curve than its top?
  
  JHK