Yaw-induced adverse rolling motion
 

Hey Everyone

I've come across a question and don't understand the explanation.

"What is yaw-induced adverse rolling motion, and when is it likely to occur?"

Answer:" The rudder inducing the aircraft to yaw one way can cause another form of adverse rolling motion in the opposite direction. This happens at high speeds above VMO/MMO"

Is this referring to the same principle as aileron reversal?

Any help will be greatly appreciated:ugh:

It's simply lateral stability response to sideslip caused by a rudder deflection, which goes with the sign of the lateral stability term (partial derivative of rolling moment due to sideslip).

Nothing to do with aileron reversal, which is all about aeroelastic deformation.

G

Thanks but why only at high speeds?

Thread undeleted with the OP's OK in case there be further discussion arising ..