The dynamic process in the staged combustion cycle liquid rocket engine was simulated through the module codified.Owing to the mathematical model form mulated that took account of the inertia

viscosity and compressibility of the liquid flow at the same time

this method could generally express the distributed characteristic of the dynamic process in the supplying system.What is more

in order to obtain higher precision in simulation calculation

we also made use of the experimental results to adjust parameter values of some important characteristics.Finally based on the simulated data

the fluctuations of the engine working parameters were discussed in this paper.And with the analysis results we provide some comparisons and basis for designing the staged combustion liquid rocket engine in the future.