A method to automatically find the combustion termination time of solid rocket motors
A solid rocket, automatic search technology, applied in rocket engine devices, machines/engines, mechanical equipment, etc., can solve the problems of poor repeatability of processing results, low accuracy, and large human factors, so as to achieve automatic data processing, Avoid processing errors and ensure repeatable results
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[0031] A method for automatically finding the combustion termination time of a solid rocket motor proposed by the present invention, the overall idea is: first determine the interval for calculating the combustion termination time; then normalize the pressure and time curve; then give a time step, Starting from the starting position of the determined interval (corresponding to the time point of the maximum pressure in the stable segment), differential derivation is performed point by point backward every other time step, and the curvature at this position is calculated, and the combustion termination time point is taken at the position of the maximum curvature.
[0032] There are two comparatively key technical points in the present invention:
[0033] 1) Normalize the pressure value (vertical axis) in a given interval according to time (horizontal axis). The interval selected by the present invention is from the maximum value in the stable section of the pressure curve to the...
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