1st Report, The Path of Trailing Vortex (The Properties of a Row of Trailing Vortices Generated in the Uniform Flow)

Measurements of trailing vortices shedding from a row of wing placed in the uniform flow were made to investigate the properties of those. The wing used in this study has a span of 30mm and a chord of 20mm and has a rectangular planform. Velocity profiles were measured at several attack angles and spanwise distance between the wings. In all cases the trailing vortices can be formed behind a row of wing and the spanwise variation of the U-component of mean velocity is produced by those vortices. The path of trailing vortex directs downwards with increasing the attack angle, while its path has a different tendency due to the spanwise distance between the wings.