Abstract: The universal mathematical model of the metal storm weapon system with side powder chambers was proposed to solve all the interior ballistic processes under the condition of different firing rates and different ballistic structures. So-called different ballistic structures indicate whether the front powder chambers are closed when rear round is fired. The influence regularities of the variations of firing rate and the ballistic structures upon the interior ballistics performance were analyzed. Finally, the technical measures to realize the consistency of interior ballistics performance were discussed.

Key words: fluid mechanics , Metal Storm , side powder chamber , interior ballistic model , interior ballistic con-sistency