Throttling simulation and control of liquid oxygen/liquid methane rocket engine pressurized by the electric pump

IF 1.4 4区计算机科学 Q4 AUTOMATION & CONTROL SYSTEMS Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering Pub Date : 2024-01-05 DOI:10.1177/09596518231207565

Runsheng Hu, Jianjun Wu, Tao Liang, Y. Cheng

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Abstract

This article presented simulation and control of a liquid oxygen/liquid methane variable thrust rocket engine pressurized by the electric pump in the throttling process. To get a proper injection pressure drop, the variation of the injection area was investigated and determined. In the control scheme, the combustion pressure and mixture ratio were the targets. To simplify the control scheme, the pressure and mixture ratio were correlated to the oxygen mass flow rate and methane mass flow rate, respectively. By controlling the propellant mass flow rate, the target engine thrust was reached. In addition, the influence of mass flow rate measurement points on the control effect was analyzed. The simulation results showed that the designed controller can reduce the overshoot of the critical engine parameters. Therefore, the maximum temperature of the thrust chamber wall after the regenerative cooling was decreased. Consequently, the thrust control errors were within 3% except for the points where the thrust changed suddenly, which can meet the mission requirements.

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电动泵加压液氧/液甲烷火箭发动机的节流模拟与控制

本文介绍了在节流过程中通过电动泵加压的液氧/液甲烷变推力火箭发动机的模拟和控制。为了获得合适的喷射压降，研究并确定了喷射面积的变化。在控制方案中，燃烧压力和混合比是目标。为了简化控制方案，压力和混合比分别与氧气质量流量和甲烷质量流量相关。通过控制推进剂质量流量，可以达到目标发动机推力。此外，还分析了质量流量测量点对控制效果的影响。仿真结果表明，设计的控制器可以降低发动机关键参数的过冲。因此，再生冷却后推力室壁的最高温度降低了。因此，除推力突变点外，推力控制误差均在 3% 以内，满足了任务要求。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 工程技术-自动化与控制系统

CiteScore

3.50

自引率

18.80%

发文量

审稿时长

4.2 months

期刊介绍： Systems and control studies provide a unifying framework for a wide range of engineering disciplines and industrial applications. The Journal of Systems and Control Engineering refleSystems and control studies provide a unifying framework for a wide range of engineering disciplines and industrial applications. The Journal of Systems and Control Engineering reflects this diversity by giving prominence to experimental application and industrial studies. "It is clear from the feedback we receive that the Journal is now recognised as one of the leaders in its field. We are particularly interested in highlighting experimental applications and industrial studies, but also new theoretical developments which are likely to provide the foundation for future applications. In 2009, we launched a new Series of "Forward Look" papers written by leading researchers and practitioners. These short articles are intended to be provocative and help to set the agenda for future developments. We continue to strive for fast decision times and minimum delays in the production processes." Professor Cliff Burrows - University of Bath, UK This journal is a member of the Committee on Publication Ethics (COPE).cts this diversity by giving prominence to experimental application and industrial studies.