Characterization of Plenum Spectra in an Arcjet Wind Tunnel
Characterization of Plenum Spectra in an Arcjet Wind Tunnel
复制标题
Arcjet 风洞中静压室光谱的表征
DOI：
10.2514/2.6271
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发表时间：
1997
影响因子：
2.1
通讯作者：
C. D. Scott
中科院分区：
文献类型：
--
作者：
M. Rob;Larry H. Mack;S. Arepalli;C. D. Scott
光纤被用来收集来自电弧喷气发动机风洞真空室的辐射。通过对光谱的研究，由原子氧和氮发射线的玻尔兹曼图确定了电子激发温度。在原子氧的情况下，温度约为15000±3400K，氮的温度约为7600±1500K，通过比较氮分子辐射的实验光谱和理论光谱，确定了分子的振动-转动温度。用积分比法估算其温度为9700±1200K。
An optical fiber is used to collect radiation from the plenum of an arcjet wind tunnel. Studying the spectra, the electronic excitation temperatures are determined from the Boltzmann plots of atomic oxygen and nitrogen emission lines. In the case of atomic oxygen, the temperature is found to be about 15,000 ± 3400 K, and that of nitrogen is found to be 7600 ± 1500 K. Determination of molecular vibrational-rotational temperature is made by comparing experimental and theoretical spectra of the N 2 + molecular radiation. The temperature is estimated to be 9700 ± 1200 K, using an integrals ratio method.