AOA Calibration

[Jeff1]

Bought a RV8A from an estate, so there is no one to ask the obvious.
I have the heated Dynon pitot and verified in annual that I have it plumbed correctly with blue and white hose to ADHRS. I have found the one page instructions on page 15.3 of the installation manual on calibration.
Question-prior to calibration, are there any indications in the panel of an active AOA? I have nothing.
The calibration says to do a stall and then push a button and you are now calibrated. That seems too basic. What about different flap positions? I know the unit isn’t sophisticated enough to sense flap positions, but it would stall at a different speed for more flaps.
Has anyone done the calculation maneuver and give me your tips

 

[swatson999]

I know the unit isn’t sophisticated enough to sense flap positions, but it would stall at a different speed for more flaps.

No, it isn't, and although it *should* have a flap position input, on an RV the difference isn't enough to matter much...because, and this is basic airmanship, the wing stalls at a particular ANGLE OF ATTACK for a given flap setting.

Remember from your primary instruction that you can stall at any speed, at any attitude, if you exceed the critical angle of attack. THAT is what the AOA is measuring and alerting, *not* speed.

 

[Rhino]

It isn't measuring speed, and doesn't care about speed, nor flaps. It's measuring a pressure differential that's fairly consistent when approaching a stall. Although that pressure differential is affected by speed or flap configuration, it isn't dependent on them. As swatson999 noted, you can stall regardless of speed or flap position. Basing the AOA condition on the pressure differential rather than those other things allows it to give you a more accurate indication of your potential for a stall.

 

[GKC Aviation]

If you haven't done the AoA calibration procedure, then you will have no indication on the SkyView for AoA at all.
After you do the calibration, then the AoA widget will appear.
The calibration procedure does seem simplistic, but it works. Follow the on screen instructions exactly during the calibration procedure, and all will be well. After this is done and saved, try a few stalls in different configurations. You will find on the RV, that it is very good.
If yours is a taildragger, don't forget to set a minimum speed for warnings to become active