Posted for RONALD STEVENS <ronald@sdc.com>:

 Hello guys
 
 The only thing I still do not get when using the AOA Pro are those numbers
 in the bottom of the unitŠwhat do they mean? I know it is working right as
 when we did an approach stall it was screaming at me to push, and stall etc
 LOL
 (as a matter of fact, my instructor did a clean stall under the hood with
 me, I was sweating like a piggy lol)
 
 But I still have no idea what those numbers in the bottom mean. I downloaded
 the manual/installation PDF but it is very vague in 'how to use' and very
 intensive on 'how to install' this unit. Well it is already installed.  I
 like to use it LOL
 
 Any idea? Thanks ‹ Ronald
 
 [When you're all in the green and it says "018" (for example) you are at cruise and your wing has a 1.8 degree angle of attack.  As you pull back the stick and increase the AOA those numbers will increase.  Somewhere around 7-8 degrees (070 - 080 on the AOA) you'll probably be getting into the yellow.  The transition from green to yellow, BTW, happens at L/D max... in the green you're on the front of the power curve, in the yellow and you're behind it. The AOA when you "spear the donut" (setup for the approach) should be at 1.4 times your stall speed (determined during the instrument calibration), and the numbers at the bottom will probably be somewhere around 100-110 (10.0 to 11.0 AOA),  Somewhere around 12-13 degrees AOA (numbers = 120-130) you'll probably be transitioning into the red at which point Bitching Betty should be giving you an "Angle, angle, push" warning, as you're approaching the critical angle which is around 16-17 degrees (160-170 on the numbers) of AOA. Beyond that the wing is stalled... if you see 200 at the bottom it's magic and Harry Potter is flying right seat. <g>  I apologize if my recollections of the numbers are a bit off, it's been a long time since I demo'ed them at the airshows.  I hope this helps.  <Marv>  ]