Opinions on NASA lift theory?

On Sunday, July 1, 2018 at 11:17:23 AM UTC-4, George Haeh wrote:
The previous webpage offers the correct mechanism:

https://www.grc.nasa.gov/www/K-12/airplane/right2.html

Note that in: F = m * dV/dt

F and V are vectors with components in 3 dimensions. Of course the z-axis is of most interest. Drag and vortex effects manifest themselves principally in the x and y axes.

And yes, there's a vast amount of mythology on lift generation in most pilot textbooks.

All of the several valid theories of lift are simply mathematical models, not the reality itself. The Bernoulli mechanism does in fact generate lift, but does not explain or predict it well, so it is best discarded as less than the whole picture. There's lifting line theory, circulation theory, deflection theory - no shortage of models.

A wing deflects air downwards, and the upward force is applied to the wing via Bernoulli pressure distributions.
If you disagree, tell me where the reaction force is applied and how.
Every airfoil has a known pressure distribution, as this is the way airfoils are designed.
Simple, well known science.
Why the constant attempts at mumbo jumbo theories exist is a total mystery to me.

https://www.mh-aerotools.de/airfoils...tributions.htm

Nah, it's due to lift demons:
http://messybeast.com/dragonqueen/liftdemon.htm
(Author thanks Mary Shafer, NASA-Dryden (now NASA-Armstrong) for revealing the truth)