Originally Posted by
the delaminator
never heard of it in helos.
In a fixed wing, dutch roll refers to the tendency of light twins at low speeds ( ie take off) to roll over in the direction of the failed engine if the failed prop is not feathered promptly.
I also can't help wrt helos and "Ducth Roll" but that above most certainly is not fixed-wing a/c Dutch Roll.
Dutch Roll is a roll-yaw coupled oscillation inherent in any conventionally configured fixed wing aircraft, typically at frequencies in the same range as piloting tasks, and therefore a potential handling issue. Often addressed on larger aircraft with dedicated damping systems which provide inputs to the rudder.