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
赵静伟 1王承尧 1徐瑜 1陈振知 1朱春艳 1常娟 1闫学文2
作者信息
- 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
- 折叠
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.
Abstract
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Key words
launch vehicle/ground-wind load/vertical arm/three-horizontal test launch mode/quantitative analysis引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据