Effect of Flow Incidence and Reynolds Number on Low-speed Aerodynamic Characteristics of Several Noncircular Cylinders with Applications to Directional Stability and Spinning

Abstract

Note presenting the aerodynamic characteristics of several noncircular two-dimensional cylinders with axes normal to the stream at various flow incidences for a range of Reynolds numbers as determined from low-speed wind-tunnel tests. The results indicate that these parameters have large effects on the drag and side force developed on these cylinders. Results regarding drag of two-dimensional cylinders, side force developed on two-dimensional cylinders, and directional stability and spinning characteristics of three-dimensional bodies are provided.