着陆器顶板羽流导向设计及验证技术

发布时间：2018-03-02 19:16

本文选题：着陆器　切入点：导向装置　出处：《航天返回与遥感》2016年02期 　论文类型：期刊论文

【摘要】：开展深空探测,对着陆器进行羽流导向设计,引导羽流扩散、降低其力/热作用是减小发动机羽流对地外星体表面起飞影响的技术途径。文章首先通过对平板、球面及圆锥三种不同形式导流装置的导流分析,确定了着陆器顶板导流装置的基本构型与工作环境,完成了导流装置结构设计和材料筛选,最后进行了温度场、抗压强度、高低温热应力分析及相关试验验证。研究结果表明,圆锥形导流装置对上升器底板的力/热效应最弱、羽流导向效果最优,其表面承受着分布不均的气动力/热载荷,结构形式及防热材料能够满足承载防热及轻量化要求,导流装置及上升器支架在验证试验过程中未出现开裂失效现象,试验结果与分析结论吻合。文章研究结论及方法对后续深空探测的羽流导向设计具有借鉴意义。
[Abstract]:Deep space exploration, plume guidance design for lander, guiding plume diffusion and reducing its force / heat effect are the technical ways to reduce the effect of engine plume on the surface takeoff of extraterrestrial body. The basic configuration and working environment of the lander roof guiding device are determined, the structure design and material selection of the guide device are completed, and the temperature field and compressive strength are finally carried out. Analysis of thermal stress at high and low temperatures and verification of related tests. The results show that the force / heat effect of conical diversion device on the bottom plate of the riser is the weakest, the plume guidance effect is optimal, and its surface bears uneven distribution of aerodynamic / thermal loads. The structure form and heat-proof material can meet the requirements of heat resistance and lightweight load, and no cracking failure occurs in the verification test of the diversion device and the riser support. The experimental results are in agreement with the analytical results. The conclusions and methods of this paper can be used for reference in the plume guidance design of the following deep space exploration.
【作者单位】：北京空间飞行器总体设计部;
【基金】：国家中长期科技发展规划重大专项资助项目
【分类号】：V423.6

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