| 电弧加热发动机羽流的非平衡态光谱诊断 |
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| 引用本文： | 赵文华,沈岩,陈黎明.电弧加热发动机羽流的非平衡态光谱诊断[J].工程热物理学报,2004(Z1). |
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| 作者姓名： | 赵文华 沈岩 陈黎明 |
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| 作者单位： | [1]清华大学工程力学系 [2]北京 |
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| 基金项目： | 清华大学机械工程学院基金(985) |
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| 摘 要： | 电弧加热发动机是一种为航天器提供机动和控制推力的装置。为了研究电弧加热发动机的工作机理,本文讨论了电弧加热发动机羽流的光谱诊断方法并设计了一套光谱诊断系统。在此系统上,以氩气为工作气体,设定氩气流量和电流,在模拟空间环境下对电弧加热发动机羽流进行了光谱诊断。利用采集到的光谱信号,分别用谱线的绝对强度法和波尔兹曼图法得到了羽流温度的径向分布。测量结果表明本文工况下羽流处在热力学非平衡态下。此外,本文还对测量进行了初步的误差分析。
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| 关 键 词： | 电弧加热发动机 光谱诊断 热力学非平衡态 |
SPECTROSCOPIC ARCJET DIAGNOSTIC UNDER THERMAL NONEQUILIBRIUM STATE |
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| ZHAO Wen-Hua SHEN Yan CHEN Li-Ming.SPECTROSCOPIC ARCJET DIAGNOSTIC UNDER THERMAL NONEQUILIBRIUM STATE[J].Journal of Engineering Thermophysics,2004(Z1). |
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| Authors: | ZHAO Wen-Hua SHEN Yan CHEN Li-Ming |
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| Abstract: | Arcjet is a kind of propulsion device for mechanical-operation and control of spacecraft. To improve our understanding of its working mechanics, the diagnostic method of arcjet is discussed and a set of spectrum diagnostic system is established. With this system, spectrum diagnostic is executed for Ar propellant at a setting value of flow rate and input current in a simulated space condition. Through the transaction and analysis of experimental data, radial distribution of temperature is obtained with absolute intensity method and Boltzmann graph method respectively. The result shows that the plume is in thermodynamic non-equilibrium state. Besides, the error for the measurement is also discussed. |
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| Keywords: | arcjet spectral diagnostic thermodynamic non-equilibrium |
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