辐射式金属空楔结构PMD元件的设计基础

THE DESIGN ESSENCE OF A RADIAL SPONGE

在长寿命卫星表面张力贮箱技术的发展中，孔板式推进剂管理装置（ＰＭＤ） 正在逐渐取代传统的筛网式ＰＭＤ，而辐射式金属空楔结构是孔板式ＰＭＤ 中的最重要元件之一。主要介绍和讨论了辐射式金属空楔结构ＰＭＤ元件设计中的基本问题，包括蓄留体积设计、蓄留能力设计和空楔结构性能分析等方面的主要内容。

The traditional screen based propellant management device (PMD) is replaced gradually by the perforated sheet based PMD with the technique progress in the surface tension tank of a long life satellite. A radial sponge is one of the most important component of the perforated sheet based PMD. In this paper, the physical design essences of a radial sponge, mainly including its volume design, its retaining capability design and the analysis of its performance, are introduced and discussed briefly. At last, an example design of a radial sponge is presented and its performance is analyzed in detail.