无中和器射频离子推力器原理研究

发布时间：2018-12-15 18:57

【摘要】：在电推力器的广泛应用中,大部分都采用加速正离子的方式产生推力,且需要安装中和器发射电子对喷射出的正离子进行中和,否则会导致航天器自充电,对其通信及电子器件造成损害。因此,中和器的性能成为制约电推力器工作状态和寿命的重要因素。为了克服该缺点,介绍了一种基于同时加速正、负离子的无中和器射频离子推力器,阐述了其结构组成及推进原理,分析了离子-离子的产生、正负离子的加速过程,指出了关键技术包括电负性工质气体放电特性、磁场过滤电子束缚效能,以及可周期性交替加速正、负离子的栅极偏置电压加载方式。分析表明,该推力器在低轨航天器及深空探测器中具有潜在的应用前景。
[Abstract]:In the extensive application of electric thrusters, most of them produce thrust by accelerating positive ions, and it is necessary to install neutralizer to neutralize the ejected positive ions, otherwise it will lead to the self-charging of spacecraft. Damage to communications and electronic devices. Therefore, the performance of the neutralizer has become an important factor that restricts the working state and life of the electric thruster. In order to overcome this shortcoming, a non-neutralizer radio frequency thruster based on simultaneous acceleration of positive and negative ions is introduced. The structure and propulsive principle of the thruster are described. The generation of ion-ion and the acceleration process of positive and negative ions are analyzed. The key technologies include the discharge characteristics of electronegative gas, the efficiency of magnetic field filtering electron binding, and the mode of biasing voltage loading of positive and negative ions periodically and alternately. The analysis shows that the thruster has potential application prospect in low orbit spacecraft and deep space detector.
【作者单位】：大连理工大学工业装备结构分析国家重点实验室;中国科学院深圳先进技术研究院;西北工业大学燃烧热结构与内流场重点实验室;
【基金】：装备预研共用技术基金中国博士后科学基金(2013M541230) 中央高校基本科研业务费专项资金[DUT15ZD(G)01]
【分类号】：V439.1

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