Optimization of repairable spare parts based on combat unit mission success

After analyzing combat unit mission and support flow of spare parts, combat unit mission success evaluation model in two-echelon support system was established based on the METRIC principle, which hot redundancy and cold redundancy of equipment systems were taken into account. The stock cost was taken as the optimization object and combat unit mission success probability was used as the restriction. Based on margin analysis method, the computation method for spare parts optimization was provided. Finally, an example was given to validate the optimization model, and the optimization results were coincident with the military practice case by analyzing. This would help equipment support commander make support decision in support concept design before mission operating.