S! Vega, (edited this after further investigation - please excuse my earlier confusion.)
SAS~Monty27 suggested I visit your thread here and I am so pleased that he did so! I have recently implemented Monty's TFM-412 and believe it is almost like a new sim when compared to earlier versions of IL2 (and I have used them all over the years). I mentioned to Monty that some of the FM's for the jets were not very realistic, hence his direction to me that I visit this thread.
I would like to assist in remedying FM issues in several jet aircraft in TFM-412. (Edit: After reviewing the FM files for the A-4 and F-8 a/c in TFM-412, I found that your FM's are already there. I must assume that the same is true for the other jets. Would you consider some input to these FM's from someone with a fair amount of actual time in them?)
For example, the A-4 FM misrepresents actual speedbrake operation for the various A-4 versions - i.e. the speed brake deploys automatically between between 400 and 500 KIAS depending on model. This did not occur in the real a/c. There was no auto deployment of the speedbrake on any of the many fighters I flew. There are also flying qualities and performance issues with the F-8's, F-86's, the F-4's and probably others as well.
I hope I can speak with a bit of authority as I have over 4,600 hours in jet fighters, including 2,000+ in various F-4 versions and 1,000+ hours in several A-4 models. I flew the F-4 for two tours during Vietnam and was an experimental test pilot for the USMC (F/A-18) in the last four years before I retired. I was privileged to fly a wide variety of a/c during my 26 years in the cockpit, although some instances were just evaluations with fewer than 10 hours in each type.)
If I can be of any help, please let me know. I can assist those who know how to modify FM files by then evaluating those modifications against real a/c performance, but I am hopeless at writing code. Someone more knowledgeable than me (such as you are!) needs to do the actual FM development. Just as when I was a real test pilot, I can evaluate the result of the real engineering work and suggest next steps.
I'll continue to check this thread as I truly appreciate what you and others here are doing to make the more modern a/c perform as they should.
S!
Wagslead