On Saturday, April 30, 2016 at 10:01:15 AM UTC-4, kirk.stant wrote:
Amazing how almost everyone who actually hasn't used a real AOA
system dismisses the concept out of hand.

Some years ago, I was asked to evaluate an AOA sensor (vane type,
mounted on a Duo, with an audio warning). Even in a relatively
smooth thermal, it squawked often for no good reason (I'm pretty
familiar with the Duo and my thermalling doesn't really suck bad).
With sensitivity turned down, it didn't give indication until
too late to be helpful (yes, I know, I already stalled).

I don't know whether it is possible to make something that
is helpful safety-wise. With a gear-down interlock it won't
help the guy thermalling low.

For what its worth from somebody who has tried one in a glider,
Best Regards, Dave