摘要
高空风的预报精度对运载火箭的飞行安全有重要影响,主要表现在对运载火箭飞行中的最大气动载荷的精度影响。以某地区实况风为基准,分析了高空风预报值产生的风偏差对火箭最大气动载荷参数精度的影响。结果表明:最大气动载荷预报值的精度随高空风预报时效延长而降低,其相对误差从第1天的5.68%增长到第11天的26.49%;且最大气动载荷预报值精度与季节有关,该预报精度在秋季最高,春季最低。研究结果在火箭发射的飞行保障及安全决策方面具有参考价值。
The prediction accuracy of upper wind has an important impact on the flight safety of launch vehicle,which is mainly manifested in the impact on the accuracy of the maximum aerodynamic load.Based on wind field from sounding data in a region,the influence of wind deviation caused by upper wind forecast on the accuracy of rocket maximum aerodynamic load is analyzed.It is found that the accuracy of the maximum aerodynamic load forecast is significantly reduced with the extension of the upper wind forecast time.The relative error increases from 5.68%on the first day to 26.49%on the 11 th day;the accuracy of the maximum aerodynamic load forecast is related to the season,with the highest forecast accuracy in autumn and the lowest in spring.These findings have reference value in the flight assurance and safety decision-making of rocket launch.
作者
程胡华
李娟
肖云清
沈洪标
赵亮
CHENG Huhua;LI Juan;XIAO Yunqing;SHEN Hongbiao;ZHAO Liang(Unit 63729 of PLA,Taiyuan 030027,China;Unit 61741 of PLA,Beijing 100094,China;Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,China Meteorological Administration,Yinchuan 750013,China;Yinchuan Meteorological Administration,Yinchuan 750011,China;Unit 32018 of PLA,Beijing 100094,China;State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China)
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2021年第10期2034-2042,共9页
Journal of Beijing University of Aeronautics and Astronautics
基金
中国科学院战略性先导科技专项(XDA17010105)。
关键词
运载火箭
风偏差
最大气动载荷预报值
精度特征
季节
launch vehicle
wind deviation
maximum aerodynamic load forecast
accuracy characteristics
seasons
作者简介
通讯作者:肖云清.E-mail:xiaoyunqing00@163.com。
