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Originally Posted by winkosmosis
Read the NASA article. The Bernoulli Effect is not what makes the plane fly. The air flows faster over the top of the wing, yes, because of the angle and the downward curve at the rear-- airflow on the bottom is compressed because it hits the underside and slows down relative to the plane. But the air speed difference is a tiny tiny contributor. It's not the majority or even a major portion of lift.
Redirection of flow is what creates lift.
If you know of a plane that can fly at 0 degrees wing pitch, post it.
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My statement is that the Burnulli principal come into play, it is the principal that creates the upwash.
I think you are confuning the Bernoulli effect with the longer path effect. Bernoulli states that the faster it moves (air or water for example) the less pressure it has.
Even in the article it states-
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{The upper flow is faster and from Bernoulli's equation the pressure is lower. The difference in pressure across the airfoil produces the lift.} As we have seen in Experiment #1, this part of the theory is correct. In fact, this theory is very appealing because many parts of the theory are correct
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When in effect the Bernoulli effect causes, among other things:
The air is bent around the top of the wing, it pulls on the air above it accelerating that air down, otherwise there would be voids in the air left above the wing. Air is pulled from above to prevent voids. This pulling causes the pressure to become lower above the wing. It is the acceleration of the air above the wing in the downward direction that gives lift.
You are confuning the "equal transit" theory with Bernoulli, Equal transit used the Bernulli principal, but when that was found to be false, what they found was the principal still held true, just in a different way.