THE NODAL CONCEPT OF DEPLOYMENT AND THE SCALE MODEL TESTING OF ITS APPLICATION TO A MEMBRANE ANTENNA
THE NODAL CONCEPT OF DEPLOYMENT AND THE SCALE MODEL TESTING OF ITS APPLICATION TO A MEMBRANE ANTENNA
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节点部署概念及其在薄膜天线上的应用比例模型测试
DOI：
10.2514/6.1999-1523
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
R. E. Freelandt
中科院分区：
文献类型：
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作者：
G. Greschik;M. M. Mikulast;R. E. Freelandt
解决了薄膜空间结构的两个挑战，即部署控制和比例模型测试的难度。为了动态稳定展开膜的形状演变，建议将其整体折叠成紧密的束（节点），并赋予其初始速度的受控模式。当节点在空间中移动时，结构从节点展开。相关的动力学对于简单模型来说是有利的。提出了恒定厚度缩放的实用总结，它避免了改变薄膜和构件壁厚，同时整个结构几何形状按比例缩放。所提出的缩放定律应用于示例双凸透镜膜天线配置的节点部署。计算了适合所考虑模型的跌落测试的真空室尺寸，并证明是合理的。
Two challenges of thin film space structures, viz., deployment control and difficulty of scale model testing, are addressed. To dynamically stabilize the shape evolution of a deploying membrane, it is proposed that its entirety be folded into tight bundles - nodes - which are imparted a controlled pattern of initial velocities. The structure unfolds from the nodes as the latter move along in space. The associated dynamics is shown favorable for a simple model. A practical summary of constant thickness scaling, which avoids changing film and member wall thicknesses while the entire structural geometry is proportionally scaled, is presented. The presented scaling laws are applied to the nodal deployment of an example lenticular membrane antenna configuration. Vacuum chamber dimensions to accommodate drop tests of the considered model are calculated and shown to be reasonable.