On Wed, 28 Jul 2004 14:47:43 -0400, David wrote in message 
<[EMAIL PROTECTED]>:

> Jim Wilson wrote:
> 
> > This suggests that both bernoulli and the pushing (gravity) are at
> > play, depending on the airfoil.  My (uneducated) guess is the
> > pushing is almost all of it and that the bernoulli effect only
> > augments:
> > http://observe.arc.nasa.gov/nasa/exhibits/planes/planes_1c.html
> 
> There's a pressure differential either way, but since icing on top of
> the wing kills lift more than icing on the bottom, I'll guess that the
> low pressure on top is at least as important as the high pressure
> beneath.

..generally, say about 3 times as important..  Beyond the 
stall, ofcourse, "the bottom tries to carry all the weight."

-- 
..med vennlig hilsen = with Kind Regards from Arnt... ;-)
...with a number of polar bear hunters in his ancestry...
  Scenarios always come in sets of three: 
  best case, worst case, and just in case.



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