Six kinds of rotary blades with same tillage depth and same mounting Angle are designed which have the circular element scoop surfaces. The parameters of the scoop surface are discussed and optimized.

The brush of the new facility descaling the axle body is driven by a mechanism and at the meantime the dust-proof plate is descaled by adjusting the mounting Angle of the single hydraulic cylinder.

Aiming at investigating how the air horn and mounting angle affect a Pitot tube measurement, experiments were carried out on various Pitot tubes.