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Updated: Jun 28, 2026
11:30
Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
Published on: March 6, 2017
[Spectrum diagnostic of arcjet].
Wen-Hua Zhao1, Yan Shen, Li-Ming Chen
1Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|March 16, 2005
Summary
Arcjet thrusters are crucial for spacecraft propulsion. This study establishes a spectral diagnostic system to analyze arcjet performance, revealing a thermodynamic non-equilibrium state during operation.
Area of Science:
- Spacecraft propulsion systems
- Plasma physics and diagnostics
- Applied electromagnetics
Context:
- Arcjet thrusters offer higher specific impulse than chemical propellants, making them vital for spacecraft.
- Understanding arcjet working mechanics is essential for optimizing their performance and reliability.
- Traditional diagnostic methods may not fully capture the complex plasma dynamics within arcjets.
Purpose:
- To establish a spectral diagnostic system for analyzing arcjet thrusters.
- To investigate the working mechanics of arcjets using spectral analysis.
- To determine the thermodynamic state of the plasma within an operating arcjet.
Summary:
- A spectral diagnostic system was developed and utilized for argon (Ar) propellant arcjet thrusters.
- The system demonstrated a high signal-to-noise ratio, enabling objective data collection on the physical processes.
- Analysis yielded radial distributions of emission coefficients and temperature, indicating a thermodynamic non-equilibrium state.
Impact:
- The findings provide crucial insights into the non-equilibrium plasma behavior of arcjets.
- Accurate temperature measurements are vital for improving arcjet design and performance predictions.
- This research contributes to the advancement of electric propulsion technologies for space missions.
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