2010 Fiscal Year Final Research Report
Measurement of vibrational and rotational temperatures behind strong shock waves by nonlinear spectroscopic methods like CARS
| Project/Area Number |
20246121
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Aerospace engineering
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| Research Institution | Chiba University |
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Principal Investigator |
MAENO Kazuo Chiba University, 大学院・工学研究科, 教授 (30133606)
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| Co-Investigator(Kenkyū-buntansha) |
太田 匡則 千葉大学, 大学院・工学研究科, 助教 (60436342)
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| Co-Investigator(Renkei-kenkyūsha) |
安部 隆士 独立行政法人宇宙航空研究開発機構, 宇宙科学研究本部・宇宙輸送工学研究系, 教授 (60114849)
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| Project Period (FY) |
2008 – 2010
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| Keywords | CARS / 振動・回転温度計測 / 極超音速衝撃波 / 大気圏再突入 / 実在気体力学 |
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| Research Abstract |
In the re-entering phase of space vehicle into the atmosphere strong shock wave is generated, and non-equilibrium, radiating high enthalpy flow is generated behind the shock wave. Together with the convecting heat transfer, the radiative and non-equilibrium heating from the shocked air plays an important role on the total heat flux to the vehicle. This research treats nonlinear spectroscopic measurement on the vibrational/rotational temperatures of nitrogen behind the hypervelocity shock waves from 4-7km/s by CARS method. The CARS spectroscopic signals are successfully observed by free-piston, double-diaphragm shock tube experiments, and the measured results are compared with simulated spectra to decide the temperatures by spectral matching method.
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