运载火箭柔性整流罩真空平抛分离运动特性研究  

Motion analysis for horizontal throwing separation of flexible fairing of launch vehicles

作　　者：郭嘉瑞 范瑞祥[1] 高朝辉[1] 张钧轶 刘严羊硕 GUO Jiarui;FAN Ruixiang;GAO Zhaohui;ZHANG Junyi;LIU Yanyangshuo(China Academy of Launch Vehicle Technology,Beijing 100076,China)

机构地区：[1]中国运载火箭技术研究院,北京100076

出　　处：《兵器装备工程学报》2024年第S2期15-21,共7页Journal of Ordnance Equipment Engineering

摘　　要：围绕运载火箭整流罩平抛分离运动,在开展分离动力学机理分析基础上,考虑柔性因素,采用梁壳单元和层合层构建了整流罩的有限元模型;利用地面真空分离试验数据验证并修正仿真模型,形成“有限元建模-动特性分析-分离运动分析-模型修正”的整流罩平抛分离运动特性分析方法。将该分析方法应用于同型火箭改进型整流罩的平抛分离运动特性研究与预示分析,效果良好。Horizontal throwing separation method of the fairing has the advantages of high structural efficiency,fast separation,and payload protection.Based on the separation mechanism analysis and considering flexibility,a finite element model of the fairing is constructed for a launch vehicle fairing by using beam shell elements and laminated layers.Furthermore,the finite element model is fully validated and corrected by using ground vacuum separation test data,resulting in a complete analysis method for horizontal throwing separation motion,covering finite element modeling,mode analysis,separation analysis and model correction.At last,the above complete analysis method is applied in the improved fairing of the same launch vehicle to obtain its horizontal throwing separation simulation results and trend,providing theoretical support for separation system design of national future large-scale launch vehicle fairings.

关 键 词：运载火箭 整流罩 平抛式分离 有限元模型 运动特性 

分 类 号：V475.1[航空宇航科学与技术—飞行器设计]