Full-Scale Tests of a New Type NACA Nose-Slot Cowling
This is a 1937 NACA technical report by NASA's Technical Reports Server, documenting full-scale wind tunnel and flight tests of a nose-slot engine cowling for aircraft engines, written for aeronautical engineers and researchers. The photographs show close views of aircraft engine cowlings and propeller hubs, including a cowling with a slot at its nose and riveted panel seams, plus an open cowling revealing a radial engine; a designer might take the smooth curved housings and exposed mechanical detail as industrial form references.

