Investigation Of The Work Process Of Solid Rocket Motor Under Lateral Overload

For the research requirement of the high g-load mobile missile SRM, the work process of solid rocket motor under lateral overload is investigated by the use of theoretical analysis and numerical simulation methods involving the calculation of internal ballistics, the simulation of flow field and the analysis of structural integrity. The analysis is focused on the acceleration influence on burn rate of the grain when the solid rocket motor is working under lateral overload. The simple model of burn rate in acceleration field is established. Moving laws of burn surface for two different grain type SRMs are respectively derived, on the base of which Zero Dimension and One Dimension quasi-steady internal ballistic simulation models are established. Numerical simulation on Three Dimension two-phase flow is conducted. The 3-D finite element models of the experimental motors are established. The structural integrity of the experimental motors under internal pressure and lateral overload is analyzed. The influence of lateral overload on the structural integrity of motor is discussed. The achievement of research has been used in design and analysis of experiment result of air defense missile.