Optimal design of solid rocket motor filament-wound case based on netting theory

Based on filament-wound case basic equations, which were deduced with netting theory according to burst pressure, taking the structural sizes and the technological parameters as constraint conditions, taking the case mass as constraint object, the design variables were optimized, such as material density and strength, wind angle of case section, radius of polar hole, by a linear multi-step method and a complex. A numerical example was given. The calculated result indicates that specific strength is the most important factor, which affects mass of the case.