| 热真空试验中分子污染敏感单机的失效机理及对策 |
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| 引用本文： | 韩彬,刘刚.热真空试验中分子污染敏感单机的失效机理及对策[J].航天器工程,2014(1):47-50. |
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| 作者姓名： | 韩彬 刘刚 |
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| 作者单位： | 中国空间技术研究院载人航天总体部; |
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| 摘 要： | 卫星大量应用的电缆塑料绝缘层、粘结剂、导热硅脂等非金属材料,在热真空试验过程中逐渐出气并产生分子污染物,可能会造成敏感单机失效的问题。文章对失效机理进行了理论分析,根据总离子流色谱图确定了分子污染物的成分,由此提出利用真空烘烤试验加速星内非金属材料的出气,同时通过真空静置提高星内真空度的方法,以解决微波开关等分子污染敏感单机在热真空试验中可能发生的失效问题。试验结果表明,失效机理分析准确,提出的措施有效。文章提出的防护对策,已在卫星研制过程中得到推广应用。
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| 关 键 词： | 卫星热真空试验 真空出气 分子污染 真空烘烤 |
Research of Associated Design in Special Parts for Integration |
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| HAN Bin,LIU Gang.Research of Associated Design in Special Parts for Integration[J].Spacecraft Engineering,2014(1):47-50. |
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| Authors: | HAN Bin LIU Gang |
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| Institution: | (Institute of Manned Space System Engineering, China Academy of Space Technology, Beijing 100094, China) |
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| Abstract: | The paper brings forward a concept of top basic skeleton and top-down design method for special parts for integration of a spacecraft, which means the unit mechanical interfaces infor- mation is collected through a skeleton model and transmitted to the skeleton model as design inputs. With the special parts design completed, the latest change information of the unit me- chanical interfaces shall be transferred to special part model via the skeleton to ensure the model can be updated in time, and at the same time the associated design and automatic assembly of the special parts are realized. This method, with which the design error rate can be reduced to 1.6 and the design time shortened about 35 %, can provide a reference for the design of special parts for integration of spacecraft |
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| Keywords: | special parts for integration top-down top basic skeleton associated design unit |
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