摘要
针对导流器排导方式在车载导弹热发射过程中具有的烧蚀和架设撤收问题,提出一种利用二氧化碳喷射冲击燃气射流从而降低发射车与导弹表面温度的新型排导方案。以计算流体力学为主要的研究方法,建立三维定常计算模型,分析燃气射流与二氧化碳射流冲击流场的特性,计算并得出:随着下排管道伸入流场长度增加,发射车壁及弹体的温度先降低再升高;随着上排管道与发射车壁夹角减小,发射车壁及弹体的温度逐渐降低;随着上排管道出口到下排管道高度减小,发射车壁及弹体的温度逐渐降低。该方案在喷管出口到地面距离改变后的其他工况中仍有意义,可以为车载导弹热发射降温排导提供可行的全新设计思路。
To deal with the problems of ablation,erection and retraction when using the deflector for exhaust conduction during thermal launching process of vehicular missiles,a new exhaust conduction scheme where carbon dioxide is ejected to impact gas jet so as to lower the temperatures of the launch vehicle and the missile is proposed.Taking the computational fluid dynamics(CFD)as the main research method,a three-dimensional steady model is established,and the characteristics of the cross flow field of gas jet and carbon dioxide are analyzed.The conclusions are drawn as follows:the temperatures of the launch vehicle and the missile decrease and then increase with the increase of the length of lower pipes;their temperatures decrease as the angle between the upper pipes and the launch vehicle wall decreases;the temperatures decrease with the decreasing height between the upper pipe orifices and the lower pipes.As the scheme remains meaningful when the distance between the nozzle exit and the ground is changed,this study provides a feasible new idea to design the exhaust conduction system for the thermal launching of vehicular missiles.
作者
杨莹
姜毅
李玉龙
牛钰森
贾启明
YANG Ying;JIANG Yi;LI Yulong;NIU Yusen;JIA Qiming(School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China;Unit 96901 of PLA,Beijing 100094,China)
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2022年第10期2609-2620,共12页
Acta Armamentarii
基金
国家部委基础研究项目(JCKY2019204C029)。
关键词
导弹热发射
燃气射流
二氧化碳喷射
排导系统
thermal launching of missiles
gas jet
carbon dioxide ejection
exhaust conduction
