The Reading System For Typical Fragment Average Windward Area

The reading system of typical fragments' average windward area is used to read the fragments' area of Cannonball. Overall evaluating the data which is gotten from the typical fragments' area and velocity, then obtain the muzzle velocity and attenuation coefficient of the fragments, this supply the important experimental findings for conventional-weapons' blasting powerIn this paper, it is simulated the fragments' space attitude by using the 16 independent aspects of regular icosahedra, and measured the fragments' projection area in 16 different directions, so that we get the maximal and minimum fragments' average windward area by data processing.In this paper, clip-microcomputer 89C51 controls the motion of direct current torque motor, turning angle photoelectric shaft-position encoder measure the rotation angle of the operating platform, grating sensor measures the amount of feed of the focus control, so that make a loop control system. By fine focusing, the CCD scan and image a fragment, then count the value of measuring-aspect where the fragment will be projected. Finally, we get the average area value of the fragment in 16 measure aspects by processing image.