液氢液氧火箭发动机稳态数值仿真与故障分析

LH_2/O_2 Rocket Engine Steady Number Simulation and Fault Analysis

根据发动机工作的物理过程建立了大型液氢液氧火箭发动机稳态故障的数学模型，数学模型包含了70个工作参数和45个干扰因素，采用了布罗伊登法求解。确立了各种故障的正确仿真机制，对计算结果进行了分析，并与试车结果相比较，吻合良好。

The steady fault mathematical mode of large LH and LO rocket engine is built according to the process of engine. This mathematical mode contains seventy capable parameters and forty five disturbing parameters, in whide the Broyden method is adopted to find the solution. It has established the right way to simulate the fault. Finally we analyse the result of the simulation, at the same time, we compare it with the hot-test. They coincide well.