关键词: 数理统计学, 身管, 发射药, 数理统计, 初速或然误差

Abstract: The muzzle velocity probable error is an important performance index of propellant. It influences the interior ballistic stability and reproducibility of the propellant greatly. In order to analysis the effect of gun barrel on the muzzle velocity probable error, the mathematical statistical method was used to analyze the muzzle velocity probable error obtained from experiments. The normality test, abnormal test and consistency test results show that the test date take normal distribution, the sample values are not abnormal, and the variance of the sample is almost equal, and the average value appears remarkable difference. The conclusion indicates different gun barrels put different influences on the muzzle velocity and probable of propellant. Obviously, the gun barrel quality is one of the influence factor of the muzzle velocity probable error.

Key words: mathematical statistics, gun barrel, propellant, mathematical statistical, muzzle velocity probable error