RE: RE: A bone of contention =
Jim,
Quite true.... but most people believe that the air is deflected downward. It's not.... it's circulated around the wing. Another way of saying it is that the air is accelerated around the wing.
The key is that it's around the wing... not down and away from it. Maybe a better way to write it is as angular momentum...
F = ma = mv^2/r = PA
The air is accelerated over the top and decelerated underneath. This causes the pressure field. This causes lift.... not the wing pushing air down and causing a newtonian "push" upwards.
This does not say that newton and bernoulli are wrong!!! The equations of lift are all derived from newtonian concepts, just like bernoulli is.