Design, Manufacture, Test and Internal Ballistic Simulation of a Solid Propellant Motor with Segmented Grain

This article studies the solid propellant rocket motor internal ballistic simulation with multi segmented grain and system engineering approach. Once grain is segmented, the alternative cross-burning Surfaces are added to combustion process. This simulation can estimate all motor performance parameters and satisfy thrust considered by mission. Synthesis and integration of all equations, modeling and relations correction in accordance with the proposed method, feasibility and effectiveness of method along with design, manufacture and test of one engineering prototype motor are the main goals of this study. Motor components are; Combustion chamber, grain, burning surface and nozzle. In this study, two main approaches are included; first is preparing a numerical program in accordance with the proposed method and second is technical requirements of production, static testing with data recording and analyzing. Determining all the inputs and outputs, effective interrelated data communication, correct and improve the calculation accuracy, simplicity and high speed calculation are advantages of the program. Finally, a complete prototype motor was manufactured and productive force was measured using a standard static test stand. Thrust force comparison between numerical and test output are show results matching.