The Drag of Airplane Wheels, Wheel Fairings, and Landing Gears II : Nonretractable and Partly Retractable Landing Gears
This is a 1936 NASA technical report on airplane landing gear drag, issued by the National Advisory Committee for Aeronautics for aeronautical engineers and aircraft designers. Its pictures are engineering line drawings of wing and wheel cross-sections beside drag-versus-lift-coefficient graphs with dashed and solid curves, showing how fairings, fillets and partial retraction change drag; a designer might take the clean chart layouts and the simple wing-profile sketches as a model for technical diagrams.
