针对小口径高低压室发射系统结构特点,采用数值模拟与试验相结合的方法对其内弹道特性进行了研究。利用经典内弹道理论建立了高低压室发射系统内弹道数学模型并进行了数值模拟和试验验证。结果表明,数值模拟结果与试验结果较为接近,证明所建立的内弹道模型合理可靠。 According to the structural characteristics of small-bore high-low-pressure chamber launch system, the internal ballistic characteristics of the small-bore high-low pressure chamber launch system are studied by means of numerical simulation and experiment. The interior ballistic mathematical model of high and low pressure chamber launch system was established by classical interior ballistic theory and the numerical simulation and experimental verification were carried out. The results show that the numerical simulation results are close to the experimental ones, which proves that the established internal ballistic model is reasonable and reliable.