Integral method for storage life prediction of solid propellant

Based on modified Arrhenius formula, an integral method and a two-step regression method for storage life prediction of solid propellant are presented. Because modified Arrhenius formula considers the effect of temperature variation to activation energy, by the proposed methods, propellant storage life can be predicted more accurately, compared with Arrhenius method which considers activation energy as a constant. Furthermore, by integral method, all test data at different aging temperatures can be analyzed as an integration, so the prediction precision of storage life can be increased with the same specimens, or specimens can be saved in the same precision by this method.