The Aerodynamic Drag of Five Models of Side Floats N.A.C.A. Models 51-E, 51-F, 51-G, 51-H, 51-J
This is a 1938 NACA technical report on aerodynamic drag tests of five side float models, prepared by the National Advisory Committee for Aeronautics for aircraft engineers. Its pictures show section outlines and a profile drawing of model 51-J, plus a photograph of a float mounted on a stand in a wind tunnel, which a designer might take as a clear example of streamlined, tapered form.

