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Development of Bonded Joint Technology for a Rigidizable-Inflatable Deployable Truss

机译：用于刚性充气可折续的桁架的粘结联合技术的开发

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Microwave and Synthetic Aperture Radar antenna systems have been developed as instrument systems using truss structures as their primary support and deployment mechanism for over a decade. NASA Langley Research Center has been investigating fabrication, modular assembly, and deployment methods of lightweight rigidizable/inflatable linear truss structures during that time for large spacecraft systems. The primary goal of the research at Langley Research Center is to advance these existing state-of-the-art joining and deployment concepts to achieve prototype system performance in a relevant space environment. During 2005, the development, fabrication, and testing of a 6.7 meter multi-bay, deployable linear truss was conducted at Langley Research Center to demonstrate functional and precision metrics of a rigidizable/inflatable truss structure. The present paper is intended to summarize aspects of bonded joint technology developed for the 6.7 meter deployable linear truss structure while providing a brief overview of the entire truss fabrication, assembly, and deployment methodology. A description of the basic joint design, surface preparation investigations, and experimental joint testing of component joint test articles will be described. Specifically, the performance of two room temperature adhesives were investigated to obtain qualitative data related to tube folding testing and quantitative data related to tensile shear strength testing. It was determined from the testing that a polyurethane-based adhesive best met the rigidizable/inflatable truss project requirements.
机译：微波和合成孔径雷达天线系统已被开发为使用桁架结构的仪器系统，作为其主要支持和部署机制超过十年。 NASA Langley研究中心在此期间一直调查轻质刚性/充气线性桁架结构的制造，模块化装配和展开方法进行大型航天器系统。 Langley Research Center研究的主要目标是推进这些现有的最先进的加盟和部署概念，以实现相关空间环境中的原型系统性能。在2005年期间，6.7米多湾的开发，制造和测试，在Langley研究中心进行了6.7米，可部署的线性桁架，展示了刚性/充气桁架结构的功能和精密度量。本文旨在总结为6.7米可部署的线性桁架结构开发的粘结的关节技术的各个方面，同时提供整个桁架制作，装配和部署方法的简要概述。将描述对组分关节试验制品的基本关节设计，表面制备研究和实验性联合检测的描述。具体地，研究了两个室温粘合剂的性能，得到与管折叠测试和与拉伸剪切强度测试相关的定量数据相关的定性数据。从测试中确定了基于聚氨酯的粘合剂最佳达到了刚性/充气桁架项目要求的测试。

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