One solution to the problems facing railgun technology is to use a lubricant injection system contained inside the armature to provide a conductive lubricant to the interface. Various different armature designs are currently under development. Each design must be analyzed through armature-rail interface modeling in order to predict the physical behavior and identify causes of transitions. A coupled multi-physical simulation is conducted on six different armature lubrication systems. The results of each simulation are compared to their corresponding test shot both for validation of the...