Dynamic Characterization for Multi-Layer Membrane Space Altimeter

机译：多层膜空间高度计的动态表征

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This paper presents an investigation into the dynamic properties of a deployable membrane structure for space altimeter applications. In particular, equations of motion are formulated which account for the viscous forces as well as the tensile ones which are normally addressed in a deployed membrane. Two commercially- available finite element codes, NASTRAN and ANSYS, are examined for their suitability in implementing the governing equations for three-dimensional membrane structures. In particular, the challenges of nonlinear governing equations and their implementation for a three-dimensional membrane structures are explored. The finite element formulation is used to evaluate the influence of membrane boundary shape and boundary tensile forces on the normal modes of the structure when atmospheric pressure is eliminated. The membrane under examination here is a prototype for the development of a possible onorbit flight experiment in thin structure deployment, where such an experiment addresses necessary questions related to the use of this technology for membrane altimetry and synthetic aperture radar. The prototype includes multiple layers for signal radiation, grounding, and thermal protection, which must be kept parallel in the deployed configuration.

机译：本文介绍了用于太空高度计应用的可展开膜结构的动力学特性。特别地，制定了运动方程，该运动方程考虑了通常在展开的膜中解决的粘性力和拉伸力。研究了两个市售的有限元代码NASTRAN和ANSYS在实现三维膜结构控制方程式方面的适用性。特别地，探讨了非线性控制方程的挑战及其在三维膜结构中的实现。当消除大气压时，使用有限元公式来评估膜边界形状和边界拉伸力对结构正常模式的影响。此处正在检查的膜是用于在薄结构部署中开发可能的在轨飞行实验的原型，其中这种实验解决了与将该技术用于膜测高仪和合成孔径雷达有关的必要问题。该原型包括用于信号辐射，接地和热保护的多层，在部署配置中必须保持平行。

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来源
《Earth amp; Space 2006: Engineering, Construction, and Operations in Challenging Environments》|2006年|P.1-8|共8页
会议地点 Houston TX(US)
作者
J. C. Heald; A.Pointel;
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作者单位

Space Technologies, Canadian Space Agency, 6767 route de l'Aéroport, Saint-Hubert, Quebec, Canada, J3Y 8Y9;

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原文格式 PDF
正文语种 eng
中图分类航天（宇宙航行）;
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Dynamic Characterization for Multi-Layer Membrane Space Altimeter

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