The Study On Projectile Movement In & Out Gun Tube And Its Effects To Firing Accuracy

This dissertation focuses on firing accuracy of projectile effected by random factors. The main contents are included as follow: The first, a model of launching dynamics of projectile is set up, and the numerical calculation software is programmed. The second, the launching dynamics calculation of projectile is arranged by using the theory of Uniform Design, and the concept of the Integrating Quantity for Initial Disturbance and the concept of the Independence Factor's Effecting Degree to Dependence Factor is inducted too. From the model of Stepwise Regression, the main random factors and their effecting degrees to initial disturbance can be obtained also. A formula is deduced to calculate the dependence deviation by using the independence deviations. The third, a model of 6-D outer ballistics of rigid projectile is set up, and the numerical calculation software is programmed. The forth, From the result of regression analysis, the firing accuracy of projectile effected by random factors is studied, and the suggestion that the test of projectile's firing accuracy can be replaced by measuring some parameters is put forward.