I have made some tests with:
-F4E altitude 2000m ,speed 650km/h (same waypoints), first without external tank,second with 3 : both are in RTB after 1h39min.
-F16C Alt 7500m speed 950km/h, first no ET, second 3 tanks : both in RTB after 50min
-SU25 Alt 800m speed 750km/h, first no ET, second 4 tanks : both in RTB after about
1h30min ,but i'am sure that the one with 4 tanks was short petrol 2 min before the first
(the drag is well simulated).
I don't know if there is a link but yesterday i ask me what happend after refueling;
answer: after refueling the AI's planes have a range...unlimited!:huh:
(test with F15, SU24, SU34)