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Hi everyone 

I am currently working on autopilot code for a fixed wing UAV 

I am using flightgear as a simulator and coding in C# .

I am getting heading value from FG wich I believe is the compass value means my current direction and I calculating the bearing as follow 

DX = PointB.x - PointA.x

DY = PointB.y - PointA.y

angle in radians = atan2(DY, DX)

My question is how to use this data to cntrol my ailerons in order to turn to the right direction of the next waypoint 

please I am stopped here for almost two months of trying all kind of algorithms without any result please help