JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleMeasurement of vibrational/rotational temperatures of gas molecules behind high Mach number shock waves by CARS spectroscopic system
Author(jpn)前野 一夫; 豊田 和弘; 安藤 広行; 宮崎 勝巳
Author(eng)Maeno, Kazuo; Toyoda, Kazuhiro; Ando, Hiroyuki; Miyazaki, Katsumi
Author Affiliation(jpn)千葉大学 工学部 都市環境システム学科; 千葉大学 工学部 都市環境システム学科; 千葉大学 大学院自然科学研究科; 千葉大学 大学院自然科学研究科
Author Affiliation(eng)Chiba University Department of Urban Environment Systems, Faculty of Engineering; Chiba University Department of Urban Environment Systems, Faculty of Engineering; Chiba University Graduate School of Science and Technology; Chiba University Graduate School of Science and Technology
Issue Date2005-03
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title宇宙航行の力学シンポジウム 平成16年度
Symposium on Flight Mechanics and Astrodynamics 2004
Start page69
End page73
Publication date2005-03
AbstractWhen a space vehicle reenters onto the atmosphere with high velocity, radiative heating from the shocked air ahead of the vehicle plays an important role on the heat flux to the wall surface as well as convective heating. In the laboratory, the spectroscopic system has been developed for temperature measurement of radiation behind strong shock waves. In this paper, CARS method (Coherent Anti-Stokes Raman Spectroscopy) for radiative flow behind strong shock waves of high Mach number has been developed. The CARS measurement system consists of a YAG laser, a dye laser, optical system, and high-sensitivity I.I.-CCD camera systems with spectroscopy. The preliminary tests have been performed for the purpose of detecting CARS signal from strong shock waves with velocity range over 5 km/s. Finally, both vibrational and rotational temperatures could be estimated by fitting of the CARS spectra obtained from experiment and analytical calculation over Mach 15.
KeywordsMach number; spacecraft reentry; aerodynamic heating; radiative heat transfer; shock wave; CARS; molecular excitation; vibrational temperature; rotational temperature; molecular spectroscopy; マッハ数; 宇宙機再突入; 空力加熱; 放射熱伝達; 衝撃波; CARS; 分子励起; 振動温度; 回転温度; 分子分光
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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