Preliminary Full-Scale Wind-Tunnel Investigation of Wing Ducts for Radiators, Special Report
This is a 1938 special report from NASA's technical reports series, a preliminary full-scale wind-tunnel study of ducts that carry air to aircraft radiators, written for aeronautical engineers. The pictures are plain engineering figures: a photograph of three radiator and oil cooler cores on a white ground, and a line drawing of a nose scoop installation on a wing surface. For a designer they offer dense ribbed grille textures and clean technical line work showing how air is channelled through a streamlined intake.
