空间用射频同轴电力电缆珍珠型轻型周期性介电结构的运动学分析

IF 0.2
G. Kress, H. Karstensen, M. Mattes, D. Raboso
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引用次数: 0

摘要

为了减少空间应用中同轴射频(RF)电力电缆的单位长度质量和提高相位稳定性,促使人们用空心珍珠周期性链代替固体电介质。电介质珠的设计必须考虑到电缆的弯曲灵活性,即使它们是由硅玻璃等硬材料制成的。空间应用射频电力电缆的一个重要要求是其相位稳定性,这受到大温度范围内材料介电常数容差以及几何形状变化的影响。本文提出了一种基于刚体运动的闭式模型来预测介质珠对电缆弯曲的运动响应。特别是,该模型绘制了内部和外部导体相对于彼此的偏心率以及弯曲电缆沿其中心线的轴向应变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Kinematic analysis of a lightweight periodic dielectric structure of pearls for RF coaxial power cables for space applications
: The desire to reduce the mass per unit length and to increase phase stability of coaxial radio-frequency (RF) power cables for space application motivates to replace solid dielectric with a periodic chain of hollow pearls. The design of the dielectric pearls must allow for bending flexibility of the cable even if they are made from a stiff material such as silicon glass. An important requirement of RF power cables for space applications is their phase stability, which is influenced by the material-dielectric-constant tolerance over a large temperature range as well as by changes in geometry. This paper presents a closed-form model based on rigid-body motion to predict the kinematic response of dielectric pearls to the bending of the cable. Particularly, the model maps the eccentricity of the inner and outer conductors with respect to each other and the axial strain of the bent cable along its centerline.
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