In order to study the ejection characteristics of the gas generator,based on the charge structure of the modified double-base solid propellant and the parameters of the gas generator,a mathematical model of the ejection form of the gas bottom push was established.The fourth-order Runge-Kutta method was used to solve the mathemati-cal model,and the variation characteristics of the ejection parameters of the gas generator were obtained.The results show that at normal temperature conditions,the missile load moved 7.7m in 0.53s,with a launching velocity of 31.1m/s,and the maximum acceleration is 81.7 m/s2,which meet the ejection requirements.In addition,the ambient temperature has a great influence on the ejection parameters of the gas generator.With the increase of the ambient temperature,the peak pressure of the low-pressure chamber of the launcher canister increases,the ejecting time of the missile load decreases,and the ejecting speed and the maximum overload increase.Compared with the normal temper-ature ejection experimental results,the maximum error of low-pressure peak pressure is 5.2%,and the maximum er-ror of missile load velocity is 5.4% .It indicates that the established gas generator ejection model can describe the e-jection parameter characteristics of missile load accurately.
关键词
燃气发生器/弹射特性/四阶龙格库塔法/弹射参数/环境温度
Key words
Gas generator/Ejection characteristics/Fourth-order Runge-Kutta method/Ejection parameters/Environmental temperature
维普
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