109 advice needed (climb)

[TomcatViP]

it's very good comments Ace.

Just remember tht "compressibility" related interferences with "normal" flows regime start to occurs well bellow the 0.5 Mach regime and non potential flows are to be preeminent once AoA increase.

With WWII planes you are both dealing in most of the flight regime with both this problem and simplified equation are hardly accurate. Just hve a look of the drag coeff in a high subsonic flight regime

For GA simulation like in Flight Unlimited or even RoF (the early Flight models where really good until stupid EGO plane where introduced), simplified equation related to design coeff are accurate enough for builiding a good sim. Cleverness of the FMder will do teh trick once the plane depart from the range of parameters where simplified equation are not good enough.

IN WWII flight sim, things are more complicated with most of the flight regime in combat being at the edge where simplified eq simply does not do anymore the trick. It's then IMHO a matter of assessment of what will have a predominant effect and what won't. There of course it's all debatable and really sensitive to the accuracy and honesty of the historical materials submitted for building the flight models .

Modern studies could be done in some arrowing section of the FM to assess a specific behavior. That's what I wld hve done perso like building a generic high speed/highG model with, let's say a 23015 wing section AR of 5 straight trezoidal wing etc... etc..

But I am sure those guys there in the Moscow suburb had more in mind and done alrdy plenty

Tht's what plsd me with CoD is both the honesty and the willingness do things good