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本文在 Chen 和 G.Klingenberg 提出的激光电离原理的基础上,发展了一种用序列脉冲激光形成一组等离子体示踪测量气流速度—时间曲线的新方法。在已完成的测量中,速度范围可达120m/s～2300m/s,相对误差为2.3%.本文对等离子体示踪特性进行了详细讨论.这种方法特别适合于高超音速非定常流场,已研制成完整的测量系统 LVG-1。
Based on the principle of laser ionization proposed by Chen and G. Klingenberg, a new method for measuring the velocity-time curve of gas flow with a series of plasma tracing using a series of pulsed lasers is developed. In the completed measurement, the speed range is up to 120m / s ~ 2300m / s and the relative error is 2.3% .This paper discusses the plasma tracing characteristics in detail.This method is especially suitable for hypersonic unsteady flow field, Has developed a complete measurement system LVG-1.