Originally Posted by
Cruiser1970
Slipstream swirl is a corkscrewing airflow that travels around the fuselage.
This airflow strikes the vertical stabilizer, increasing its AOA. The increase in AOA of the vertical stabilizer pulls the tail to the right and yaws the nose to the left.
This situation is more prevalent at high power settings and low airspeeds.
To compensate, right rudder is required.
Yes, I know the definition of the myth. That doesn't mean it's a real phenomenon though.
As far as I am aware, it's never been proven to actually exist, just a theory. If you have evidence, feel free to share.