Jet Propulsion with Special Reference to Thrust Augmenters
A 1933 NACA technical note on jet propulsion and thrust augmenters, issued by the National Advisory Committee for Aeronautics for engineers and researchers, and held in NASA's technical reports collection. The single page is a rotated photograph labelled Fig. 2, a general view of a test rig, showing a ceiling of perforated panels, metal struts and a dark cylindrical engine or duct mounted on a frame. A designer might take its stark grey tones, dense industrial lattice and rigid geometric framing as reference for technical documentation or retro engineering layouts.
