Wind-Tunnel and Flight Tests of Slot-lip Ailerons
This is a 1937 NASA technical report on wind-tunnel and flight tests of slot-lip ailerons, an aeronautical engineering study issued for aircraft designers and researchers. The two pictures are rolling-moment and yawing-moment coefficient charts plotted against angle of attack for flap settings of 0 and 60 degrees, with curves for several aileron deflections and a modified versus original slot-lip configuration. A designer might take from them the plain grid-and-curve graphic language of mid-century engineering plots, with its fine lines, labeled axes and legend boxes.
