基于超临界二氧化碳的导弹弹射装置内弹道建模与优化

To analyze the feasibility of supercritical carbon dioxide-based catapults, an interior ballistic model is constructed based on the Soave-Redlich-Kwong equation of state, and an one-dimensional isentropic nozzle model considering real gas effect is introduced. Using experimental data of nozzle mass flow rate and calculation results from relevant literature, the interior ballistic model is validated. Based on validation and simulation, a multi-objective optimization model is developed and solved by using a genetic algorithm. The results show that the missile catapult based on supercritical carbon dioxide can meet the given launch requirements. The interior ballistic model is less sensitive to time step, and the ideal gas and real gas models yield significantly different results. Compared with specific reference conditions, the optimized mass of supercritical carbon dioxide is reduced by 32. 2%, and the energy utilization rate is increased by 49. 52% . The research results can provide theoretical reference for designing supercritical carbon dioxide-based catapults.