Study on the effects of training round caliber and propellant type on the ballistic characteristics of a dynamic-reaction training device

Abstract

This study proposes the structural and ballistic design for an 82 mm PUI-type training device based on the dynamic-reaction principle. Using a MATLAB-based program to ensure the training projectile's trajectory matches that of the combat projectile, the authors analyzed the influence of two main parameters: the caliber of the training projectile (d) and the propellant type. The results show that NBL-62 propellant significantly reduces maximum pressure and stabilizes ballistic characteristics compared to NBL-34. The study identifies d = 23 mm with NBL-62 as the optimal configuration, ensuring a compact, low-pressure, and stable device. These findings provide an important scientific basis for designing and manufacturing an 82 mm training device based on the dynamic-reaction principle