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火星探测器器箭分离冲击响应影响分析与评价
申智春1,2, 林小艳1,2, 程坤3, 王海鹏1,3
1.上海卫星工程研究所, 上海 201109;2.上海市深空探测技术重点实验室, 上海 201109;3.探月与航天工程中心, 北京 100190
摘要:
针对火星探测器器箭分离冲击过大问题,对单机开展了试验与分析研究。针对完成冲击试验考核的单机可靠性是否受到影响问题,提出采用强度/应力方法进行判断,将厂家给出的单机内部器件的冲击条件视为强度,将单机的冲击响应谱转化后的半正弦波视为应力,将二者相比,从试验和分析两方面表明正样单机的可靠性满足要求,经受过冲击考核的单机可靠性没有下降。此方法可作为判定完成冲击试验考核的单机可靠性是否受影响的依据,也可作为单机冲击试验前抗冲击能力的判断准则。
关键词:  火星探测;星箭分离;冲击响应谱;半正响脉冲
DOI:10.15982/j.issn.2095-7777.2018.05.012
分类号:TB122
基金项目:
The Shock Response Suppression and Analysis of Mars Probe and Rocket Separation
SHEN Zhichun1,2, LIN Xiaoyan1,2, CHENG Kun3, WANG Haipeng1,3
1.Shanghai Institute of Satellite Engineering, Shanghai 201109, China;2.Shanghai Key Laboratory of Deep Space Exploration Technology, Shanghai 201109, China;3.Lunar Exploration and Space Program Center, Beijing 100190, China
Abstract:
The shock test and analysis of the equipment in the Mars probe for the large shock response generated by separation of the probe and the Long March 5 launch vehicle is discussed. The reliability of the equipment is analysized after shock test. The Strength-Stress model is proposed to judge if the reliability is affected. The half-sine wave impulse shock condition of components offered by the manufacturers is known as Strength, and the half-sine wave converted by the shock response spectrum of the equipment is known as Stress. The two values are compared. This method can be regarded as an assisting methodto judge the reliability of the equipment after shock test, and also can be regarded as the criteria of shock resistance of the equipment.
Key words:  Mars exploration;separation of the probe and the rocket;shock response spectrum;half-sine wave impulse