Wind-tunnel research comparing lateral control devices, particularly at high angles of attack XII : upper-surface ailerons on wings with split flaps
This is a 1935 NASA technical report, issued through the NASA Technical Reports Server, presenting wind-tunnel measurements of aileron and split-flap performance on Clark Y wings for aeronautical engineers. Its pictures are engineering plots of hinge-moment coefficient against aileron deflection with split flaps neutral and down, plus a wing plan and section drawing with dimensioned aileron and flap spans. A designer might borrow the clean grid graphs and the dimensioned line drawing as austere technical diagram styles.
