三平测发模式下起竖臂对运载火箭地面风载的影响  

Influence Analysis of Vertical Arm on the Ground-wind Loads of a Launch Vehicle with the Three-Horizontal Test Launch Mode

作　　者：赵静伟 王承尧 徐瑜 陈振知 朱春艳 常娟 闫学文 ZHAO Jingwei;WANG Chengyao;XU Yu;CHEN Zhenzhi;ZHU Chunyan;CHANG Juan;YAN Xuewen(Shanghai Aerospace System Engineering Institute,Shanghai 201109,China;Shanghai Aerospace Equipment Manufacturing General Factory Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海宇航系统工程研究所,上海201109 [2]上海航天设备制造总厂有限公司,上海200240

出　　处：《上海航天（中英文）》2024年第2期81-86,共6页Aerospace Shanghai（Chinese&English）

摘　　要：为提高运载火箭地面风载条件对地面风场较大的发射场的适应性、降低运载火箭设计载荷、减轻火箭结构质量、提高运载效率,针对三平测发模式的特点,开展起竖臂对运载火箭地面风载的影响分析。采用基于广义位移和广义载荷的运载火箭地面风载计算方法,根据起竖臂的结构特点,量化分析竖臂刚度、支承油缸刚度、抱箍数量及位置因素对运载火箭地面风载的影响程度。起竖臂刚度、抱箍数量和位置对运载火箭地面风载影响较大,提高起竖臂刚度可使根部弯矩降低24.8%,增加Ⅰ级箱间段抱箍可使根部弯矩降低38%,而支承油缸刚度对运载火箭地面风载几乎没有影响。In response to the characteristics of the three-horizontal test launch mode,an influence analysis of vertical arm on the ground-wind loads of a launch vehicle is carried out so as to improve the adaptability of the ground-wind load condition of the launch vehicle to its launch site under large ground-wind loads,reduce the design load and structural weight of the launch vehicle,and improve the launch efficiency.The ground-wind load of the launch vehicle is calculated based on the generalized displacement and the generalized load.Based on the structural characteristics of the vertical arm,the influence of the vertical arm stiffness,the support cylinder stiffness,the clamp number,and the clamp position on the ground-wind loads of the launch vehicle is quantitatively analyzed.The stiffness of the vertical arm,the number and position of the hoops have a great influence on the ground-wind loads of the launch vehicle.The bending moment at the root can be reduced by 24.8%by increasing the stiffness of the vertical arm,and the bending moment at the root can be reduced by 38%by increasing the hoop between the I.stages.The stiffness of the support cylinder has almost no effect on the ground-wind loads of the launch vehicle.

关 键 词：运载火箭 地面风载 起竖臂 三平测发模式 量化分析 

分 类 号：V475.1[航空宇航科学与技术—飞行器设计]