软件部署
标度律
缩放比例
天线(收音机)
比例(比率)
空格(标点符号)
比例模型
计算机科学
下降(电信)
常量(计算机编程)
几何学
工程类
物理
航空航天工程
数学
电信
量子力学
操作系统
程序设计语言
作者
Gyula Greschik,Martin M. Mikulas,R. E. Freeland
出处
期刊:40th Structures, Structural Dynamics, and Materials Conference and Exhibit
日期:1999-04-12
被引量:22
摘要
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.
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