Why don´t these figures match up?

[ACE-OF-ACES]

Originally Posted by klem

AoA would you look at some of your Z_IAS, Z_TASs and corresponding Altitude figures and give me your view. It seems to me that the Z_IAS and Z_TAS are too close together at altitude. I'd like to get another opinion.

Agreed 100%

Bare with me here, in that it was well over a year ago that I started looking at the CoD data.. And from what I recall, the Z IAS value made no since.. If I recall correctly, it had the same shape and values of the Z TAS, only with a little bit of an offset. There were also some issues with the I vs Z ROC value (Z TAS 3).. I recall taking the derivative of the Altitude, both I and Z and recall one of them making since, and the other not. There were a few more that were not what I was expecting, I would have to check my notes. So, all in all there are some issues with the Z values. Hopefully one of these days 1C will provide a read me that explains what they are such that we don't have to guess what they are!

On that note, due to these unknowns, my plan to leave the choice as to which value to use up to the users when using my CoD analysis tools at my web site