图表示不同一次氮气压力下焰流压力与轴向距离的关系。如图所示，在注入2 MPa一次氮气时，燃烧室内部最高静压为1.641 MPa。在注入3 MPa一次氮气时，燃烧室内部的最高静压为1.827 MPa。在注入4 MPa一次氮气时，燃烧室内部的最高静压为1.945 MPa。综上所述，提高一次注氮压力会小幅度提升燃烧室内部的静态气压，而对拉瓦尔喷嘴后的气体压力变化影响不大。此外，在分析压力云图中提到的激波现象，在下图中表现为压力曲线的锯齿状波动。

The graph shows the relationship between flame flow pressure and axial distance for different primary nitrogen pressures. As shown in the figure, the maximum static pressure inside the combustion chamber is 1.641 MPa at 2 MPa primary nitrogen injection, 1.827 MPa at 3 MPa primary nitrogen injection, and 1.945 MPa at 4 MPa primary nitrogen injection. gas pressure inside the combustion chamber, while it has little effect on the gas pressure change after the Laval nozzle. In addition, the surge phenomenon mentioned in the analysis of the pressure clouds is shown in the following figure as a sawtooth fluctuation of the pressure curve.