What is the main purpose of a frise aileron?
- Increase drag on the up going wing.
- Decrease drag on the up going wing.
- Help pilot overcome aerodynamic loads.
Explanation from PART66Online
A Frise aileron is offset so that the up-deflected aileron projects its leading edge into the airflow below the wing, adding drag on the side of the rising wing. This extra drag counters adverse yaw, helping the aircraft turn cleanly rather than yawing away from the turn. It is a drag-balancing device, not a means of overcoming control loads.
Apavlenko asked · 18 Sep 2015
Not correct answer. avstop.com/ac/flighttrainghandbook/di...:
The design of the aileron surface itself has also been improved by the "Frise type" aileron. With this type of aileron, when pressure on the control stick or wheel is applied to one side, raising one of the ailerons, the leading edge of that aileron (which has an offset hinge) projects down into the airflow and creates drag. This helps equalize the drag created by the lowered aileron on the opposite wing and thus reduces adverse yaw (Fig. 4-5).
Community Comments (3)
The drag on the down going aileron (up-going wing) is reduced
en.wikipedia.org/wiki/Adverse_yaw
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