| Not sure how Lynn calibrates the Chelton but I just re-calibrated the Advanced AOA on the Legacy. Last time I flew with HPAT, we got to 67 KIAS when Josh suggested we were about a knot above stall so that was good enough for me. To be honest, I could not feel anything that indicated an imminent stall beyond the attitude and airspeed indication. I felt nothing in the controls.
So, to that number I added 15% and calibrated the AOA last week to 77 KIAS dirty. I repeated this for the clean configuration which was about 12 knots higher.
I also did the zero G setting, solo, which was fairly simple the second time. I started at 3,000, descended to 2500 for speed then pulled up sharply to 3000, dropped power and nosed over for the zero G indication. Recovery is about 2,500.
Previously, the lady was chirping all the time on takeoff and landing. Now, after resetting the numbers (they were factory delivered for Legacy-never changed) I now can land and only in a full flare pointing at the sky just before I fall onto the runway I hear the voice again. That works for me.
If I ever hear it in normal ops I will be unloading quickly whereas before it was really just a nuisance that was always ignored. I no longer hear it on takeoff when the nose pops into the air either.
Hope that helps anyone else contemplating adjusting the AOA.
Paul Calgary On 2011-06-28, at 1:11 PM, H & J Johnson wrote:
Absolutely Lynn :) Did you notice any prestall buffet? Wing drop? What is the margin for the stall warning [1.15x vso?] How was 'she' calibrated? Could you recognise the signs if she hadn't advised you of the fact that you were 'getting there' {say.... if she died}? |