A method for determining flame width of underwater solid rocket motor by image processing using Mathematica

Underwater solid rocket motor is widely used as the propulsion power system of underwater weapons. Knowing and monitoring the flame width of underwater solid rocket motor is a key factor for the optimized design and efficient and secure work. In this paper, a method for determining the flame width of the underwater solid rocket motor by image processing using Mathematica is proposed. By pre-processing, edge detection and contour extraction, the virtual width is computed in each image. And it is calibrated by a reference template. It is shown that the method is effective and relatively accurately computes the flame width of underwater solid rocket motor.