Abstract
The article models the neutralization of powder gases in the fighting compartment using a pyrotechnic composition (sodium nitrate, powdered iron, activated carbon). Thermochemical pyrotechnic systems are characterized by a high reaction rate and intense gas and heat generation. Due to these properties, they are used in the reservation of machinery to create barriers that effectively separate powder gases and protect internal components from thermal and mechanical stress. The key factors of chemical neutralization efficiency are analyzed: the kinetics of oxidant decomposition, oxidation of the metal component, and thermal decomposition of carbon. A mathematical model of heat transfer, mass transfer, and chemical transformations in the interaction of gases with pyromass is proposed. Numerical analysis shows a significant decrease in concentrations of nitrogen and carbon oxides, which improves the sanitary and hygienic conditions of the crew. The developed algorithms are applicable to the design of air purification systems in armored vehicles and the creation of new pyrotechnic neutralizers.