Why don't read the report about figures 17 and 18?
Here, I will post it once again....
Now, Holtzuage....
I would love to have this conversation with you. Should be a wonderful and refreshing change given your claims to be an engineer.
I wait with baited breath for your measured and definable evidence showing the early Mark Spitfire to have acceptable longitudinal stability by any modern definition. Feel free to use the RAE post war standards, NACA, R-1815A, SF119A, MIL-F-8785, FAR, JAR....
You pick!!
Looking forward to it.