Experiments with a Wing Model from which the Boundary Is Removed by Suction
A 1929 NASA technical memorandum reporting wind-tunnel experiments on a wing model with boundary-layer suction, presented as an aeronautical research report for engineers and aerodynamicists. Its pictures are plain engineering charts: polar curves of lift against drag for suction-slot and screen arrangements in Section VIII, plus a line graph of efficiency coefficients against a flow parameter, all in black ink on white with dense grid lines and numbered curve labels that a designer could use as spare, austere technical linework.
