空间发动机启动过程的仿真

SIMULATION OF THE STARTING PROCESS OF SPACE ENGINE

以液氧/煤油空间推进系统为研究对象,对该系统的动态特性进行了分析和研究,建立了整个推进系统的动态过程的数学模型,并采用Matlab软件中的simulink工具仿真了液氧/煤油发动机动态过程中各参数的变化情况,并对仿真结果进行了具体的分析.虽然采用的是集中参数法,但同时考虑了液体的惯性、粘性和压缩性,所以本文建立的常微分方程组能在一定程度上反映发动机工作过程的分布特性.

This paper studies space propulsion system. The parameter changing direction the dynamic characteristics in the startup processes of liquid oxygen/kerosene dynamic mathematical model of the whole propulsion system is set up, and the of the dynamic process in the liquid oxygen/kerosene liquid rocket engines is studied using Matlab Simulink software. Though we adopt the centralized parameter method to build the engine model,but the inertia, stickiness, compressibility of liquid are taken into account at the same time, so the model can reflect the distributed characteristics of dynamic process of the engines to some extent.