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离子发动机(又名离子推进器、推力器)在航天领域有着广泛的应用,本文简要介绍了其工作原理与结构。在真空热试验中,离子发动机点火,会向真空室内喷射出高能Xe粒子,对卫星、热沉、容器压力等均会产生不良影响。本文结合具体的离子发动机真空热试验结果,对发动机点火的影响进行了分析,并提出了针对性的解决方案。我们使用氙泵来提升系统抽气能力,安装防溅射靶吸收并抑制高能粒子。
Ion engine (also known as ion thruster, thruster) in the field of aerospace has a wide range of applications, this article briefly describes its working principle and structure. In a vacuum thermal test, the ion engine ignites and emits high-energy Xe particles into the vacuum chamber, adversely affecting satellites, heat sinks, and vessel pressure. In this paper, the specific ion engine vacuum heat test results, the impact of the ignition of the engine were analyzed and put forward a targeted solution. We use a xenon pump to enhance the system’s pumping ability, install a sputtering target to absorb and suppress high-energy particles.