月地高速再入返回器弹道重建与气动力参数辨识  

Trajectory Reconstruction and Aerodynamic Parameter Identification of Lunar-Earth High-speed Reentry Capsule

作　　者：李齐[1] 魏昊功 张正峰[1] 陈春亮[1] 彭兢[1] 杨孟飞[2] LI Qi;WEI Hao-gong;ZHANG Zheng-feng;CHEN Chun-liang;PENG Jing;YANG Meng-fei(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;China Academy of Space Technology,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部,北京100094 [2]中国空间技术研究院,北京100094

出　　处：《宇航学报》2021年第8期1043-1050,共8页Journal of Astronautics

基　　金：国家中长期科技发展规划重大专项。

摘　　要：对嫦娥五号返回器再入飞行数据进行了弹道重建与气动力参数辨识。采用输出误差法辨识传感器误差及状态量初值,完成弹道重建。对重建弹道进行风修正,并获得修正后的攻角和侧滑角。基于修正后的弹道数据,采用线性回归法完成气动力参数辨识。与外测数据对比分析可知,弹道重建结果精度较高。与地面设计数据对比分析可知,气动力数据辨识结果与设计值偏差在合理范围内,从而验证了地面设计数据的可信度。Trajectory reconstruction and aerodynamic parameter identification are carried out on the reentry flight data of the Chang’e-5 sample return capsule.The output error method is used to identify the sensor error and the initial value of the state,and to complete the trajectory reconstruction.Wind correction is performed on the reconstructed trajectory,and the corrected angle of attack and sideslip angle are obtained.The aerodynamic parameter identification is done by using the linear regression method based on the revised trajectory.The accuracy of the trajectory reconstruction result is satisfactory when compared with the external data.The deviation between the identification result and the design value is within a reasonable range,which verifies the credibility of the ground design data.

关 键 词：嫦娥五号探测器 返回再入 再入弹道重建 气动参数辨识 

分 类 号：V528[航空宇航科学与技术—人机与环境工程]