Dutch Roll- Isnt this due to the 'differential' (my own terminology used there) lift between the wing moving forward with an increased AoA therefore higher lift coefficient and the rearward moving wing having a reduced lift coefficient due to reduced AoA.
Not quite, unless i've misunderstood you. Dutch roll is due to a yaw disturbance that couples into a rolling motion. If a perturbation causes the aircraft to yaw, one of the wings will move faster than the other as the aircraft yaws. It is the difference in speed that causes the rolling motion, not a change in angle of attack. The roll lags the yaw by about 90 degrees, which causes the 'wallowing' characteristic. A small fin combined with dihedral is the easiest way to start the motion.
GBM
