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采用自行设计的两相喷雾实验设备和测量装置，通过ＭＦ激光散射测粒仪，对液氧液氢火箭发动机所用量气液同轴离心式喷嘴后方喷雾液滴的平均直径ＭＭＤ和液滴尺寸分布指数ｎ等雾化特性，进行了试验研究，测量了Ａ型喷嘴在不同气体和液体喷注压降、不同空间位置的喷雾特性。分析了气体喷注压降一定时液体喷注压降对雾化特性的影响规律，以及当液体喷注压降一定时气体喷注压降对雾化特性的影响规律，得出了一些有意义的结论。研完结果对气液同轴离心式喷嘴设计有一定的指导意义。
The self-designed two-phase spray experiment equipment and measuring device were used to measure the mean droplet size (MMD) and droplet size distribution of the liquid droplets of the liquid-gas coaxial centrifugal nozzle used in the liquid-oxygen liquid hydrogen rocket motor Index n and other atomization characteristics of the experimental study was conducted to measure the A-type nozzle in different gas and liquid injection pressure drop, spray characteristics of different spatial locations. The influence law of the pressure drop of the liquid jet on the atomization characteristics is analyzed when the pressure drop of the gas jet is fixed, and the influence law of the jet pressure drop on the atomization characteristics when the liquid jet pressure drop is fixed is obtained. Some meaningful results are obtained Conclusion. Finishing the results of the gas-liquid coaxial nozzle design has some guiding significance.