Abstract
Distributions of nitric oxide vibrational temperature, rotational temperature and velocity have been measured in the hypersonic freestream at the exit of a conical nozzle, using planar laser-induced fluorescence. Particular attention has been devoted to reducing the major sources of systematic error that can affect fluorescence temperature measurements, including beam attenuation, transition saturation effects, laser mode fluctuations and transition choice. Visualization experiments have been performed to improve the uniformity of the nozzle flow. Comparisons of measured quantities with a simple one-dimensional computation are made, showing good agreement between measurements and theory given the uncertainty of the nozzle reservoir conditions and the vibrational relaxation rate.
| Original language | English |
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| Publication status | Published - 2002 |
| Event | 22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2002 - St. Louis, MO, United States Duration: 24 Jun 2002 → 26 Jun 2002 |
Conference
| Conference | 22nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference 2002 |
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| Country/Territory | United States |
| City | St. Louis, MO |
| Period | 24/06/02 → 26/06/02 |