Casting Process Simulation and Optimization of Composite Solid Propellant Slurry

In order to obtain the optimal casting process parameters of HTPB composite solid propellant, the constitutive model for the flow process of propellant slurry was established based on the rheological properties of HTPB propellant slurry adopting a combination of experimental and theoretical Simulation methods. The casting process of HTPB composite propellant slurry was simulated by using the finite element Software, and the reliability of the Simulation results was verified through experiments. Moreover, the casting process of the propellant slurry was optimized and the optimal casting process parameters were ob-tained. The results show that HTPB propellant is a typical pseudoplastic fluid, and its viscosity decreases with increasing shear rate. The porosity and the casting time are 12. 5% and 11. 25%, respectively after comparison of experiment and Simulation. Among them, temperature has the most significant impact on casting time, and vacuum degree has the most significant impact on porosity. © 2024 China Ordnance Industry Corporation. All rights reserved.