On 5/23/2011 3:40 AM, Dave Doe wrote:

Simple answer, there is no "ratio" -
Newton 100% + Bernoulli 100%, total = 100%

So a wing generates as much lift upside down?

For an aircraft flying level, at the same speeds, upright and inverted,
the wings produce IDENTICAL lift.
To do this, the inverted airfoil needs a higher angle of attack usually.

You are really dragging out all the old causes for disagreement: I can
see why you would be using a pseudonym

Brian W