| 液体火箭发动机试验台贮箱增压系统数值仿真 |
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| 引用本文： | 陈阳,张振鹏,瞿骞,朱子环.液体火箭发动机试验台贮箱增压系统数值仿真[J].航空动力学报,2007,22(1):96-101. |
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| 作者姓名： | 陈阳 张振鹏 瞿骞 朱子环 |
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| 作者单位： | 1. 北京航空航天大学,宇航学院,北京,100083
2. 北京航天试验技术研究所,北京,100074 |
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| 摘 要： | 在不考虑传热传质的情况下建立了一种简化的贮箱模型,并采用液体火箭发动机试验台气路系统通用模块化建模与仿真软件对容腔放气过程和某试验台贮箱增压系统在发动机点火工作段的增压过程进行了仿真,计算结果与分析解和试验结果获得了较好的一致,验证了软件的有效性和通用性.对两个系统的建模过程表明软件所采用的模块化建模与仿真方法适用于对复杂管网的建模,在液体火箭发动机系统仿真上具有较好的应用前景.对贮箱增压系统的仿真表明,合理设计PID控制参数并根据经验预置与额定流量相近的调节阀初始开度,对于提高增压系统起动过程的平稳性有利.
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| 关 键 词： | 航空、航天推进系统 液体火箭发动机 试验台贮箱增压系统 数值仿真 PID控制 液体火箭发动机试验台 贮箱 高增压系统 数值仿真 system tank simulation 平稳性 起动 初始开度 调节阀 额定流量 控制参数 合理设计 前景 应用 系统仿真 复杂管网 仿真方法 建模过程 |
| 文章编号： | 1000-8055(2007)01-0096-06 |
| 收稿时间： | 2005/12/12 0:00:00 |
| 修稿时间： | 2005年12月12 |
Numerical simulation f or tank pressurization system of L RE test-bed |
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| CHEN Yang,ZHANG Zhen-peng,QU Qian and ZHU Zi-huan.Numerical simulation f or tank pressurization system of L RE test-bed[J].Journal of Aerospace Power,2007,22(1):96-101. |
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| Authors: | CHEN Yang ZHANG Zhen-peng QU Qian and ZHU Zi-huan |
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| Institution: | School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;Beijing Institute of Aerospace Testing Technology, Beijing 100074, China;Beijing Institute of Aerospace Testing Technology, Beijing 100074, China |
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| Abstract: | A simple model of propellant tank was established by neglecting mass and heat transfer between the propellant and pressurant.Then by employing the modularization modeling and simulation software for liquid rocket engine(LRE) test-bed gas system(LRETBMMSS-GS),blowdown of a tank and pressurization of a LO_2 tank pressurization system during engine firing were simulated.The simulation results are in good agreement with the analytical solution and test data.Accordingly,the software is validated to be effective and versatile.The progress of modeling two systems shows that the method of MMS is suitable for modeling complicated LRE system and can be used to simulate all kinds of working processes of LRE system.The simulation of LO_2 tank pressurization system indicates that PID control parameters should be set reasonably and the initial opening of pneumatic diaphragm control valve should be adjusted to nominal pressurant mass rate,which is effective to improve stability of pressurization starting transient. |
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| Keywords: | aerospace propulsion system liquid rocket engine(LRE) tank pressurization system of LRE test-bed numerical simulation PID control |
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