THE normal control surfaces of an aeroplane are the elevator (for pitching); the rudder (for yawing); and the ailerons (for rolling). In certain cases the ailerons may be replaced or augmented by spoilers, conveniently placed just in front of the ailerons, or at the same chordal position further inboard.
Baker, F.B. (1947), "Spring Tabs: A Review of their Development and Application, Together with an Outline of the Design Data Involved", Aircraft Engineering and Aerospace Technology, Vol. 19 No. 10, pp. 314-319. https://doi.org/10.1108/eb031558
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