Tina wrote:
Mr Dudley, once again you are confused. Most define angle of attack as
the chord line of a wing, and of course with that definition it can be
negative and still generate lift. Mr Mx chooses a different way of
defining it. It is some angle such that when it goes negative the
airfoil can generate no lift. Do you remember the disbarred former
president Clinton saying something about "It depends on what 'is'
means"?

In Mx's case, words change meaning so that he is NEVER wrong. It must
be an interesting version of English he teaches.

But he does offer amusement for some of us on otherwise humorless
days, doesn't he?



AOA actually can be defined relative to any given reference datum, but
normally it's considered in the industry as being the angle formed
between the chord line of the wing and the relative wind as you have
correctly stated.

Quite frankly, I read what Mxemanic writes on occasion and can't figure
out how he can be so close to getting it right and still manage to get
it wrong. He's amazing, and an interesting study if nothing else.
It's too bad he's taken this path on these groups. I've always felt he
has a genuine interest in things aviation and would like to contribute,
but he seems to be such a jerk that he gets in his own way.

--
Dudley Henriques