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首页> 美国政府科技报告 >Progress in Applying Tunable Diode Laser Absorption Spectroscopy to Scramjet Isolators and Combustors
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Progress in Applying Tunable Diode Laser Absorption Spectroscopy to Scramjet Isolators and Combustors

机译：可调谐二极管激光吸收光谱技术在超燃冲压发动机隔振器和燃烧室中的应用进展

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Development of advanced propulsion systems of interest to the Air Force requires study of the harsh physical environments associated with reacting flows characterized by extremes in temperature and pressure and composition in the case of plasmas. Such environments are difficult to study in detail with methods that make use of physical intrusion into the local environment. Such difficulties motivate the use of noncontact means of study such as optical approaches. By taking advantage of impressive advances in diode laser and associated technology, tunable diode laser absorption spectroscopy (TDLAS) has become a widespread tool for optical diagnostics in reacting flows. Measurements of target species concentration, temperature, pressure, and velocity have been demonstrated in a wide variety of environments by several research groups. Commercialization of niche measurement instruments based on TDLAS has been achieved. The current maturity of the technique enables its application to hypersonic flow paths -- scramjet engines in particular. In this report we summarize our progress in applying TDLAS to scramjet isolators and combustors.

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