Originally Posted by Maverick2167
NASA denying Bernoulli, is what make me confused, So are the theory of Lift taught in flight schools all wrong then?? includes the Books Published by Mr Keith Williams,
The thing is, NASA *hasn't* denied Bernoulli. What they have done is pointed out that the "equal transit time" explanation is complete hogwash. And it is, there is nothing that compels air flowing over the "top" of an air foil to reach the trailing edge at the same time as the air flowing under the bottom of the same airfoil. And it doesn't. Actually, it can be shown that the air over the top of a typical asymmetrical airfoil reaches the trialing edge ahead of the air underneath. The fact that NASA has rejected the "equal transit time" notion, doesn't mean that they have rejected any relevance of Bernoulli's principle to lift.