光学推进的元结构
Senlin Rao1,2, Wendi Yi1, Haoqing Jiang3
1The Institute of Technological Sciences, Wuhan University, Wuhan, 430072, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|August 16, 2024
概括
一个新的石墨烯金属元结构 (GMM) 增强了用于航天器的脉冲激光微推进 (PLMP). 这种GMM-(HKUST-1) 材料提高了效率和稳定性,为传统推进剂提供了有希望的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 航空航天工程 航空航天工程
- 纳米技术 纳米技术
背景情况:
- 脉冲激光微推进 (PLMP) 对小型航天器至关重要.
- 传统的PLMP推进剂在效率和稳定性方面存在局限性.
- 需要新的材料来克服这些挑战.
研究的目的:
- 开发和评估一个新的光学推进元结构战略,以加强PLMP.
- 研究由金属有机框架 (MOFs) 衍生的石墨烯金属元结构 (GMMs) 的性能.
- 评估GMM-(HKUST-1) 材料的特异冲动,剥离效率和稳定性.
主要方法:
- 使用MOF制造石墨烯金属元结构 (GMM),特别是GMM-(HKUST-1).
- 包括纳米粒子大小,石墨烯层和粒子间隙在内的GMM属性的表征.
- 实验和数值分析以测量PLMP绩效指标.
- 在各种条件下评估光吸收效率和材料稳定性.
主要成果:
- GMM-(HKUST-1) 实现了1072.94秒的特异冲动和51.22%的废弃效率.
- 每个质量的冲动推力达到了105.15 μN μg-1 ,超过了传统推进剂.
- 超结构显示了99%的光吸收效率,并在大气和湿度条件下保持稳定性.
- 优化的纳米颗粒尺寸 (≈12 nm) 和密度 (0.958 g cm-3) 有助于提高性能.
结论:
- 开发的基于GMM的光学推进策略显著提高了PLMP的性能.
- 石墨烯纳米层和金属纳米结构协同改善激光能量吸收,转换和材料稳定性.
- 这种方法有可能彻底改变微型航天器的推进和能源系统.
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