Abstract
V-shaped surface with two planes linked by an arc surface is widely used in structure design, such as inlet duct. According to its characteristic, the transverse painting method is adopted to plan painting trajectory for its inner surface. Along the curve of the cross-section, the plane area is painted under the uniform speed of spray pattern and the arc area is painted under the uniformly accelerated and decelerated motion. The maximum speed is calculated by the transfer efficiency of the plane area and arc area. Experimental tests and evaluation are carried out on an arc-transit duct with rectangular cross-section. The results show that in this approach, the maximum positive relative deviation, maximum negative relative deviation and average relative deviation are obviously lower than those with equal painting speed on all surface.
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