摘要
根据轴向冷发射需求,同时避免发射过程对发射平台内部空间的污染,设计了一种以高压氮气为弹射能源的轴向底推式冷弹发射装置。介绍了轴向冷弹发射系统的结构组成、工作原理以及设计要点,并运用理想气体状态方程、质量和能量守恒定律、气体动力学等设计理论与方法,建立了轴向底推式冷气弹射系统的高压室、低压室、阀口气体流动以及导弹运动的数学模型。为提高导弹发射时的分离速度,同时降低发射过载峰值,以建立的数学模型为基础,基于内弹道结构参数,采用VB语言编程,通过仿真计算和分析,研究了气瓶初始压强、气瓶容积、低压室初始容积、电磁阀通径、无阻尼自然频率、阻尼比及活塞(托盘)直径等弹射系统的主要结构参数对产品的分离速度和发射过载的影响,找出了各个结构参数变化对导弹分离参数的影响规律,并对影响规律的机理进行了分析。该研究为弹射系统结构参数的优化提供了理论依据,为同类型轴向冷弹发射装置内弹道设计提供了理论参考和依据。
According to the demand of axial cold launch,an axial cold ejection device using high-pressure nitrogen as ejection energy was designed to avoid the pollution of the internal space of the platform.The structure composition,working principle and main design points of the axial cold ejection system were introduced.By using the ideal gas equation of state,mass and energy conservation equation and aerodynamics,the mathematical models were established for the high-pressure chamber,low-pressure chamber,valve port gas flow,and missile motion of the axial cold ejection system.In order to improve the separation speed and reduce the overload peak,based on the established mathematical models and the internal ballistics structural-parameters,VB language was used to program.Through simulation calculation and analysis,the main structural parameters of the ejection system such as cylinder initial pressure,volume,initial volume of low-pressure chamber,electromagnetic valve orifice,natural frequency,damping ratio and piston diameter,were studied to determine the impact on missile separation speed and launch overload.The influence of various structural-parameters change on the missile separation parameters was found,and the mechanism of the influence laws was analyzed.This study provides a theoretical basis for the optimization of the structural parameters of ejection system,and provides a theoretical reference and basis for the internal ballistics design of the same type of axial cold ejection launcher.
作者
刘刚
张瑜莹
景凤理
LIU Gang;ZHANG Yuying;JING Fengli(China Airborne Missile Academy,Luoyang 471009,China;Unit 93160 of PLA,Beijing 100071,China)
出处
《弹道学报》
CSCD
北大核心
2024年第3期25-31,共7页
Journal of Ballistics
关键词
内弹道
弹射系统
轴向发射
冷气弹射
internal ballistics
ejection system
axial launch
cold ejection
