Research on Grass-removing Angles and Equations of Rotary Blades

In this paper, a detailed description on the grass-removing angles of rotary blades and the relationships between these angles are presented. The equation of the dynamic grass-removing angle for sidelong portion of the rotary blade is derived. This equation is a basic equation and it is universally applicable for rotary blades. It incorporates all the parameters of the grass-removing angles. By altering these parameters, other relevant equations can be obtained.