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相关概念视频

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

528
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
528
Electrospray Ionization (ESI) Mass Spectrometry01:12

Electrospray Ionization (ESI) Mass Spectrometry

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Higher molecular weight biomolecules are nonvolatile compounds that may decompose before ionizing or vaporizing during mass analysis with conventional electron impact ionization methods. Accordingly, electrospray ionization (ESI) is the favored method for vaporizing and ionizing biomolecules as it circumvents rapid fragmentation and enables the recording of mass signals for the entire biomolecule.
ESI utilizes electrical energy to transfer ions from the liquid phase of the sample into the...
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A 100 KW Class Applied-field Magnetoplasmadynamic Thruster
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一个10W级电喷阵列推进器的表征.

Collin Whittaker1, Steven Arestie2, Colleen Marrese-Reading2

  • 1Department of Aerospace Engineering, University of Michigan, City, 48109 Michigan United States.

Journal of electric propulsion
|March 31, 2025
PubMed
概括
此摘要是机器生成的。

这项研究详细介绍了一种6102发射器的多孔形电喷阵列推进器,达到高达13.3W的功率.性能以负极性测量,突出推力,特异冲动和电喷系统强大的扩展效率.

关键词:
电动力学 电动力学电子喷雾剂是一种电子喷雾剂.伊利斯,伊利斯,伊利斯微推力机是一种微推力机.

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科学领域:

  • 太空飞船推进器 太空飞船推进器
  • 电子喷雾推进器的发动机.
  • 微推进系统 微推进系统

背景情况:

  • 电子喷射推进器为小型卫星提供了一个有前途的微推进解决方案.
  • 为更广泛的任务应用,将电喷系统扩展到更高的功率水平至关重要.
  • 之前的设计在动力处理和强度方面面临限制.

研究的目的:

  • 设计,制造和表征一个高功率的多孔形电喷阵列推进器.
  • 在一系列运行条件下直接测量推力,特定冲动和效率.
  • 调查电喷技术的性能限制和扩展潜力.

主要方法:

  • 6102发射器多孔玻璃和陶电喷阵列的制造.
  • 直接推力测量使用精确的质量平衡在一个钟瓶.
  • 真空设施测试,以评估性能从低到超过10W.
  • 分析效率下降和潜在原因,如设施效应.

主要成果:

  • 在负极点下,推进器可达到13.3W的经验证运行.
  • 在各种电压和功率中测量推力,特定冲动和效率.
  • 在1400V以上的正模式操作中确定了弧形问题.
  • 突出显示了二次充电粒子流作为影响效率的因素.

结论:

  • 开发的多孔形电喷射推进器显示了更高功率应用的潜力.
  • 了解设施效应和带电粒子流是优化性能的关键.
  • 电喷系统的稳健扩展需要仔细考虑电极设计和操作模式.