Results of aerodynamic tests on slotted airfoils in the aerotechnical laboratory (S.T. Ae.) of Rhode St. Genese, Brussels
A 1928 technical report on wind tunnel tests of slotted airfoils, produced at the aerotechnical laboratory in Rhode St. Genese near Brussels and issued through the NASA Technical Reports Server. The pictures are engineering line drawings of three airfoil cross-sections, rotated sideways on the page, with chord lines, slot openings and angle marks. A designer could take from them the clean technical diagram style of early aeronautics, with thin dash-dot centrelines and labelled dimensions.
