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Study on Ground Verification for Large Deployable Modular Structures

机译：大型可部署模块化结构地面验证研究

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摘要

A quantitative assessment is provided of the difficulty of ground deployment tests and evaluates the validity of modularized deployment testing for large space structures. An index that well shows the difficulty of ground deployment tests is the ratio of gravity force to deployment force. The relationship between this index and the accuracy of deployment tests is calculated using an analysis model of the large deployable antenna reflectors onboard Engineering Test Satellite ⅧI (ETS-Ⅷ). The index showed that a deployment structure whose diameter is more than 10 m has insufficient evaluation accuracy; thus the structure should be divided into modules. The index also showed that the single module of the large deployable antenna onboard ETS-Ⅷ is of the appropriate size to evaluate deployment reliability. The influence of module connection on the deployment motion is also examined. The cross correlation between the changes in strain energy profile during deployment in a single module and those in combined modules is calculated to show how many modules should be connected and tested. The resistance force that arose due to the module connection is also calculated using the beam strain energy. It is clarified that ground deployment testing for four combined modules should be conducted in addition to the ground deployment testing for a single module when the deployment force margin is not large enough.
机译：定量评估提供了地面部署测试的难度，并评估了大型空间结构模块化部署测试的有效性。很好地表明地面部署测试难度的指标是重力与部署力的比值。该指数与部署测试的准确性之间的关系是使用工程测试卫星ⅧI（ETS-Ⅷ）上的大型可部署天线反射器的分析模型来计算的。该指标表明直径大于10 m的展开结构评价精度不足；因此结构应分为模块。该指数还表明，ETS-Ⅷ机载大型可部署天线的单个模块的大小合适，可以评估部署的可靠性。还检查了模块连接对展开运动的影响。计算在单个模块中部署时和组合模块中时应变能曲线的变化之间的相互关系，以显示应连接和测试的模块数量。还可以使用梁应变能来计算由于模块连接而产生的阻力。需要说明的是，当部署力裕度不够大时，除了对单个模块进行地面部署测试外，还应对四个组合模块进行地面部署测试。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2006年第4期|p.780-787|共8页
  • 作者

    Akira Meguro; Hironori Ishikawa; Akio Tsujihata;

  • 作者单位

    Engineering Test Satellite VIII Project, Office of Space Applications, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaragi 305-8505, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

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