Discussion
What does a large roll-to-yaw ratio in the Dutch roll mode imply for the pilot?
Answer: B
A large ratio of bank amplitude to sideslip amplitude means the roll component dominates and the aeroplane is felt to rock its wings. Configurations with strong dihedral effect, including heavily swept wings at high lift coefficient, behave this way, and it is why a swept-wing aeroplane's Dutch roll is described as a wing rock while a straight-wing aeroplane's is more of a nose wag. The ratio says nothing about whether the mode is oscillatory, and nothing at all about the spiral, which is a separate root.
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