DYNAMICS MODEL OF SMALL AUTOMATIC WEAPON SYSTEM MOUNTED ON A FIGHTING ROBOT WHEN FIRING

Abstract

This paper presents a method to establish the dynamics model of the small automatic weapons
mounted on the fighting Robot when firing in space. The math model has been established based on
Lagrange’s theorem of the second kind and the theory of multibody system dynamics. The dynamic
model of the mechanical system consists of four rigid bodies with five degrees of freedom. The use of
dynamic model helps to analyze and evaluate more accurately the impact of the firing force on the firing
stability of the weapon when mounted on a fighting Robot. The value of the weapon's firing force acting
on the mechanical system during firing was determined experimentally for both cases: single shot and
short burst firing. Dynamics simulation is performed by numerical method and applied to the fighting
Robot designed and manufactured by the Military Technical Academy combined with AKM submachine
gun. The results obtained from this study can be used as a reference for designers in the design process
to optimize the overall structure of small automatic weapons when mounted on the Robot.