The effect of a gap between elevator and stabilizer on the static stability and maneuverability about the lateral axis in flight
This is a 1933 NASA technical report, issued by the NASA Technical Reports Server collection, on aircraft flight tests examining how a gap between elevator and stabilizer affects stick force and lateral stability. The pictures are engineering graphs plotting stick force in kilograms against dynamic pressure, with separate lines for closed and open throttle and for gap open and gap closed, marked with plotted data points and fitted straight lines. A designer might take from them only a sparse scatter-and-line chart style with dashed and solid trend lines, circle and triangle markers, and labelled axes useful for minimal technical diagram layouts.
