Tests of Nacelle-Propeller Combinations in Various Positions with Reference to Wings II : Thick Wing - Various Radial-Engine Cowlings - Tractor Propeller
This is a 1932 NASA technical report, published in the United States, that records wind-tunnel tests of engine nacelle and propeller combinations mounted at different positions on a thick wing, and it was written for aeronautical engineers. The pictures are grid-layout photographs of a wing model with a radial-engine cowling and tractor propeller set on a test stand in a tunnel, with a pale wood or metal support frame in front of a multi-paned window, and a designer could take from them the streamlined nacelle silhouette and the clean, documentary look of engineering photographs.
