Research on the reliability evaluation method of interior ballistic performance in ejection system

In order to fully explore the reliability information in the single test, the calculation method of internal ballistic performance parameters based on the single test of ejection power is established, and the validity of the calculation method is tested by hypothesis. On the basis of the single test of ejection dynamics, a certain amount of semi-physical simulation internal ballistic performance data is obtained by combining simulation calculation, which is used as the prior information for the reliability evaluation of internal ballistic performance, and the actual ejection comprehensive performance test data is used as the posterior information, and the prior and posteriori data are fused in the case of limited test samples, so as to provide an effective evaluation method for the identification of internal ballistic performance.