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Old 07-15-2008, 05:29 PM
  #102  
Tim Green
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Default RE: Bernoulli vs Newton


ORIGINAL: mjfrederick


ORIGINAL: lnewqban

I hope we will discuss created pressure differential instead of Bernoulli principle from now on!!!!!!!!!!!
Sorry, I had already written my post prior to reading this. I am aware that Bernoulli's Principle does not directly apply, but much of his work in fluid dynamics led to development of the first flat-bottomed airfoils. I still say that it's a pressure differential that results in lift, and the downward flow of air is an "equal" and opposite reaction to that. Equal is in quotes because we all know it is not truly equal.
Choppers won't fly, unless they're throwing heaps of air down. Everyone knows this.

Does Bernoulli contribute to this downward direction of the air? In a way, but it really doesn't matter. The air's moving down, and that's the direct cause of the lift.