基于AMESim/Simulink的补燃循环火箭发动机与调节阀特性仿真  

Simulation of characteristics of staged combustion cycle rocket engine andcontrol valve based on AMESim/Simulink

作　　者：李辉 郭迎清[1] 徐柯杰 闫星辉 LI Hui;GUO Yingqing;XU Kejie;YAN Xinghui(School of Power and Energy,Northwestern Polytechnical University,Xi’an 710129,China)

机构地区：[1]西北工业大学动力与能源学院,西安710129

出　　处：《航空动力学报》2024年第1期169-176,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(62203362);国家科技重大专项(J2019-Ⅴ-0003)。

摘　　要：在AMESim软件环境下重新建立了某型补燃循环液体火箭发动机的调节阀部件动态模型,在Simulink软件环境下建立了机电作动系统的动态模型,将两者与修改后的火箭发动机模型进行变推力过程联合仿真,并在仿真中注入输送管路压力扰动。仿真结果表明:机电作动系统与调节阀模型能够反映发动机变推力过程中各部件内部的参数变化;联合仿真保持了原发动机模型的稳态精度,各主要参数误差均在1‰量级;调节阀的活塞自反馈机构能够抑制输送管路中低频压力波动对发动机推力的影响。The model of a control valve of a staged combustion liquid rocket engine was rebuilt in AMESim software environment.And the model of electromechanical actuation system was built in Simulink.Co-Simulation on process of variable thrust,including control valve,actuation system and modified engine model,was conducted.Then perturbance of pressure was introduced during simulation.The results showed that the model of electromechanical actuation system and control valve can reflect the internal parameter changes of each component in the process of variable thrust.The co-simulation maintained the steady-state accuracy of the original engine model,the errors of the main parameters were within the order of 1‰.The self-feedback structure of piston of control valve can restrain the influence of low frequency pressure fluctuation in the conveying pipeline on the thrust of the engine.

关 键 词：液体火箭发动机 调节阀 电动执行机构 AMESIM软件 Simulink软件 联合仿真 

分 类 号：V431[航空宇航科学与技术—航空宇航推进理论与工程]