Fault Simulation and Experimental Study on High-Thrust LOX/LH2 Rocket Engine

Abstract

In order to locate the fault in a test of a high-thrust LOX/LH2 engine, the dynamic characteristic simulation model library of liquid rocket engine is established, and the dynamic characteristic simulation model of the high-thrust LOX/LH2 engine is built. The accuracy of the simulation model is verified by comparing the model with the experimental parameters. According to the possible faults of the engine, the simulation calculation is carried out in turn, and the results are compared with the measured parameters. Through the comparison, it is found that the most likely failure mode is the blockage of the exhaust pipe of the oxygen turbine. The simulation results verified by experiments were in good agreement, which not only proves the accuracy of fault location, but also proves the feasibility of fault location of high-thrust oxyhydrogen engine by dynamic simulation, laying a foundation for further development of fault monitoring and location technology for high-thrust LOX/LH2 rocket engine in the future.

Keywords

liquid rocket engine / LOX/LH2 rocket engine / dynamic characteristics / fault simulation

References

[1] 张育林，刘昆，程谋森. 液体火箭发动机动力学理论与应用[M]. 北京：科学出版社，2005.
[2] 熊靖宇. 液氧甲烷发动机故障特征分析与故障预测方法研究[D]. 长沙：国防科技大学，2018.
[3] 何涛,黄敏超,胡小平,等. 某火箭发动机故障检测及诊断算法设计分析[J]. 南京航空航天大学学报,2019(S1):50-55
HE T,HUANG M C,HU X P,et al. Design analysis of fault detection and diagnosis algorithms for rocket engine[J]. Journal of Nanjing University of Aeronautics & Astronautics,2019(S1):50-55
[4] 黄敏超,刘昆,张育林,等. 分级燃烧循环火箭发动机的动态特性研究[J]. 航空动力学报,2002(4):500-504
HUANG M C,LIU K,ZHANG Y L,et al. Dynamic characteristic study of staged combustion cycle rocket engine[J]. Journal of Aerospace Power,2002(4):500-504
[5] 樊忠泽,黄敏超. 空间推进系统工作过程故障仿真[J]. 国防科技大学学报,2008,30(2):11-15
PAN Z Z,HUANG M C. Fault simulation of space power system in the operation process[J]. Journal of National University of Defense Technology,2008,30(2):11-15
[6] 曹泰岳. 火箭发动机动力学[M]. 长沙：国防科技大学出版社，2004.
[7] 吴义忠，陈立平. 多领域物理系统的仿真优化方法[M]. 北京：科学出版社，2011.
[8] 蔡国飙，李家文，田爱梅. 液体火箭发动机设计[M]. 北京：北京航空航天大学出版社，2011.
[9] 王建波,于达仁,王广雄. 液体火箭发动机泄漏故障实时仿真[J]. 推进技术,1999,20(5):1-5
WANG J B,YU D R,WANG G X. Real time simulation of leak fault of liquid rocket engine[J]. Journal of Propulsion Technology,1999,20(5):1-5
[10] 吴建军. 液体火箭发动机故障检测与诊断研究[D]. 长沙：国防科学技术大学，1995.
[11] 潘辉,张黎辉. AMESim软件在液体火箭发动机系统动态仿真上的应用[J]. 火箭推进,2011,37(3):6-11
PAN H,ZHANG L H. Application of AMESim in dynamic characteristic simulation of liquid rocket engine system[J]. Journal of Rocket Propulsion,2011,37(3):6-11
[12] 王弘亚,张卫红. 基于AMESim平台的氢氧火箭发动机启动过程仿真研究[J]. 导弹与航天运载技术,2017,357(6):28-31
WANG H Y,ZHANG W H. Research on simulation of start-up process of LOX/LH2 rocket engine based on AMESim[J]. Missiles and Space Vehicles,2017,357(6):28-31
[13] YAMANISHI N，KIMURA T，TAKAHASHI M，et al. Transient analysis of the LE-7A rocket engine using the rocket engine dynamic simulator(REDS)[C]//40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. [S.l]：AIAA，2004.
[14] CHRISTENSEN E，BROWN A，FRADY G. Calculation of dynamic loads due to random vibration environemnts in rocket engine systems[C]//AIAA/ASME/ASCE/AHS/ASC Structures，Structural Dynamics，& Materials Conference. [S.l]：AIAA, 2013.
[15] JUN S I，TOKUMASU T，KAMIJO K. Analysis of dynamic response of rocket engine LH_2 feed system[C]//The Japan Society of Mechanical Engineers. Japan：JSME，2002.
[16] RUTH E，AHN H，BAKER R，et al. Advanced liquid rocket engine transient model[C]//Joint Propulsion Conference. [S.l]：26th Joint Propulsion Conference，2013.
[17] MATTEO F D，ROSA M D，ONOFRI M. Start-Up transient simulation of a liquid rocket engine[C]//AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. [S.l]：AIAA，2011.
[18] 王珏，朱森元. 氢氧火箭发动机（YF-73）动态数学模型及其数值模拟方法[C]//中国宇航学会液体火箭推进专业委员会学术会议. 青岛：中国宇航学会，2007.