Wind-tunnel research comparing lateral control devices, particularly at high angles of attack II : slotted ailerons and frise ailerons
A 1933 NASA technical report on wind-tunnel tests of aileron designs, prepared for aeronautical engineers and researchers studying lateral control at high angles of attack. The single figure diagrams three aileron deflection arrangements (B average differential, C extreme differential, and a third unlabelled case) as paired circles with linked control arms and marked angles in degrees, useful to a designer as a clean schematic of mechanical linkage geometry.
