Relation between the Inclination of a Streamer and Wind Velocity

[摘要] The author has studied the relation between the wind velocity and the inclination of a cylindrical streamer made of cloth. The ordinary theory of aerofoils treats only when the angle of incidence is small. In the present problem the angle varies between 0 and 90 degrees, so that the theory cannot be applied to it. Therefore, the result of the theory of discontinuous current and the coefficient of interference of the two wings of a biplane are used to compute the pressure on a cylinder placed obliquely in a current. By this computation considering the pressure and weight of the streamer, the equation (c) of §2 showing the relation between the inclination and the wind velocity was derived. By comparing the results of this computation and of the actual observation, it may be concluded that this computation is reliable to some extent.

[学科分类] 大气科学