大推力氢氧补燃循环发动机故障仿真

Fault Simulation for the heavy-lift LH2/LOX Staged Combustion Cycle Engine

摘要:

针对大推力氢氧补燃循环发动机，使用模块化故障仿真方法，对发动机多种典型故障进行了仿真研究，为建立液体火箭发动机健康监控系统奠定了基础。首先，介绍了大推力氢氧补燃循环发动机的系统组成结构以及工作过程；其次，利用Matlab/Simulink工具构建了发动机系统主要部件的模块库，并根据发动机结构和工作过程，建立了氢氧补燃循环发动机的整体仿真模型；最后，仿真分析了发动机的多种典型故障，并利用Matlab的GUI工具搭建了可视化界面，实现了操作和实现方式的人性化。

Abstract:

Aiming at the heavy-lift LH2/LOX staged combustion cycle engine, the modular fault simulation method is used to simulate a kinds of typical engine faults, which lays foundation for the establishment of health monitoring system of liquid rocket engine. Firstly, the system structure and working process of the typical LH2/LOX staged combustion cycle engine are introduced. Secondly, Matlab/Simulink tool is used to build the module library of the main components of the engine system, and according to the engine structure and working process, the overall simulation model of the LH2/LOX staged combustion cycle engine is established. At last, many typical engine faults are simulated and analyzed ,and the visual interface is built by using Matlab GUI tools to realize the humanization of operation and implementation mode.