Drag and Cooling with Various Forms of Cowling for a Whirlwind Engine in a Cabin Fuselage
This is a 1928 NACA technical report, issued by the National Advisory Committee for Aeronautics in the United States, for aeronautical engineers and researchers studying aircraft engine cowling. Its pictures are plain line drawings of engine nacelle profiles and cross-sections, labelled with dimensions, showing streamlined shapes a designer could borrow for sleek, teardrop-like forms.
