南京理工大学学报（自然科学版）2024，Vol.48Issue(1)：26-35,10.DOI:10.14177/j.cnki.32-1397n.2024.48.01.002
无杆式高压气动弹射器弹射性能参数灵敏度分析
Sensitivity analysis of ejection performance parameters of rodless high-pressure pneumatic catapult
摘要
Abstract
By analyzing the influence law and sensitivity of parameters,an optimization calculation reference for the key parameters of the ejection performance of a rodless high-pressure pneumatic catapult is obtained.Based on the thermodynamic parameters and dynamic theory of real gases,an accurate interior ballistic model is established and compared with ejection test data and fluid simulation curves to obtain a relatively accurate theoretical calculation model.By using the global sensitivity method,the influence laws of seven main parameters of the interior ballistic stability and the departure velocity,as well as the linear main effect and second-order effect results of the parameters are obtained.The most sensitive parameter affecting the interior ballistic stability is the volume of the high-pressure chamber,and the most sensitive parameter affecting the departure velocity is the ambient temperature.The sensitivity of the second order main effect of the leakage rate multiple and the valve opening time themselves and the second order interaction effect with the other five influencing factors are relatively low,so the values of these two factors can be determined in advance in the design to reduce the design variables.The research results of this article can provide theoretical reference for the optimization of interior ballistics and ejection devices.关键词
高压气动/弹射性能/试验设计/灵敏度分析/二阶效应分析Key words
high-pressure pneumatic/ejection performance/design of experiment/sensitivity analysis/second order effect analysis分类
军事科技引用本文复制引用
王雪琴,朱阿元,马吴宁,刘栋,王尚龙..无杆式高压气动弹射器弹射性能参数灵敏度分析[J].南京理工大学学报（自然科学版）,2024,48(1):26-35,10.基金项目
国家自然科学基金(12002169) （12002169）
