摘要
面向未来离子电推进深空探测、无拖拽控制等星际航行的应用需求,结合传统离子光学系统在轨任务中离子溅射、热载冲击等故障,开展了30 cm一体构型C/C复合材料离子光学系统研制与评价研究。基于自研LIPS-300离子推力器建立离子光学系统输入与输出参数关系,优化C/C复合材料工艺实现薄壁多孔结构设计,采用宽范围束流适应性测试、热稳定性测试综合评价新型离子光学系统与放电室的匹配性及有效性。结果表明:采用连续纤维栅极与短切纤维接口一体成型设计缓解了薄弱结构的热冲击损伤问题;30 cm C/C复合材料离子光学系统实现了165~620 W宽范围束流持续点火,推力由12.23 mN线性上升至104.43 mN,拟合误差优于±6%,比冲由520.68 s阶梯上升至3250.25 s;束流发散角由31.52°下降至27.42°,推力偏角小于1.2˚;束流平直度提升5.14%;栅极热态微位移±0.01 mm,稳态栅间距较传统钼栅极提升9.5%~12.2%。
To address the application requirements of future ion-electric propulsion systems in deep space exploration and drag-free control in interstellar navigation,and in consideration of operational challenges such as ion sputtering and thermal loading experienced by traditional ion optical systems during on-orbit missions,a study was conducted on the development and evaluation of a 30 cm integrated C/C composite ion optical system.Leveraging the self-developed LIPS-300 ion thruster,the input–output parameter relationship of the ion optical system was established,and the fabrication process of the C/C composite material was optimized to achieve a thin-walled,porous structural design.The compatibility and performance effectiveness between the novel ion optical system and the discharge chamber were comprehensively assessed through wide-range beam current adaptability tests and thermal stability evaluations.Results demonstrate that the monolithic integration of continuous-fiber grids with short-cut fiber interfaces effectively mitigates thermal shock-induced damage in structurally vulnerable regions.The 30 cm C/C composite ion optical system enables stable beam ignition across a power range of 165~620 W,with thrust increasing linearly from 12.23 mN to 104.43 mN(fitting error within±6%).Specific impulse increases progressively from 520.68 s to 3250.25 s.Beam divergence is reduced from 31.52°to 27.42°,while thrust vector deviation remains below 1.2°.Beam straightness improves by 5.14%.Grid thermal micro-displacement under operating conditions is maintained within±0.01 mm,and steady-state grid spacing is enhanced by 9.5%to 12.2%compared to conventional molybdenum grids.
作者
高斌
王东升
俞钧
李娟
贾艳辉
谷增杰
胡竟
王大年
GAO Bin;WANG Dongsheng;YU Jun;LI Juan;JIA Yanhui;GU Zengjie;HU Jing;WANG Danian(Science and Technology on Vacuum Technology and Physics Laboratory,Lanzhou Institute of Physics,Lanzhou 730000,China)
出处
《固体火箭技术》
北大核心
2025年第6期843-852,共10页
Journal of Solid Rocket Technology
基金
国家自然科学基金(No.62371213)
国家重点开发计划(No.2022YFB3403500)。
关键词
C/C复合材料
离子推力器
离子光学系统
栅极
试验研究
carbon-carbon composite materials
ion thruster
ion optical system
grid
experimental study
