The software is good, but your point is about the flight model. The flight model is all about tuning. That was not my area but I watched it being done. It start

The software is good, but your point is about the flight model. The flight model is all about tuning. That was not my area but I watched it being done. It started with curves from the flight testing program and then many hours of trial and error parameter tweaking until the test pilot said that it was right. I saw a session in the middle of the night where the engineer tweaked, the pilot said it needed a little more, the engineer undid the tweak and the pilot said it was perfect. I also saw some Air Force pilots in a C5 sim (they were commercial sims) who could tell if the model was right by judging when they passed over the (simulated) highway in Dover, DE for a given engine setting. They were right, according to the engineer. The point is, if you spend enough time on [1] you can tune the model. No one spends that much time on the MSFS. But for logic based stuff, like the working title VNAV implementation in the CJ4 it’s just a matter of understanding the expected logic and implementing. It is very impressive stuff. [1]https://docs.flightsimulator.com/html/Samples_And_Tutorials/Tutorials/Defining_A_Flight_Model.htm https://docs.flightsimulator.com/html/Samples_And_Tutorials/...