Thanks for reply.
I have coded a 2d-flight model where plane is influenced by its inertia and forces: lift, drag, steering (left-right), thrust, wind, gravity, kinetics. I did not succeed to implement this model as a simple algorithm so I just add one force at time.
Now I would like to add turbulence etc., but it is a bit too difficult to swap between different coordinate systems and also checking trigonometry discontinuity. Especially, as I have to teach AI pilots to fly and fight again each time I change the model.
Briefly: Any good ideas how to implement 2d-flying model?