Nonresonant laser-induced thermal acoustics is used with heterodyne detection to measure temperature (285-295 K) and a single component of velocity (20-150 m/s) in an atmospheric pressure, subsonic, unseeded air jet. Good agreement is found with Pitot-tube measurements of velocity (0.2% at 150 m/s and 2% at 20 m/s) and the isentropic expansion model for temperature (0.3%).
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机译：非族化激光诱导的热声学与外差检测一起使用，以测量温度（285-295 k）和速度（20-150米/秒）的单个组分，亚音速，未安装的空气喷射。 良好的一致性地发现速度的皮特管测量（0.2％，在150米/秒，2％为20 m / s），温度概等膨胀模型（0.3％）。
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