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大推力液氧煤油补燃发动机分级起动仿真分析

张睿文 李斌 王丹 张晓光

张睿文, 李斌, 王丹, 等. 大推力液氧煤油补燃发动机分级起动仿真分析[J]. 航空动力学报, 2024, 39(8):20220555 doi: 10.13224/j.cnki.jasp.20220555
引用本文: 张睿文, 李斌, 王丹, 等. 大推力液氧煤油补燃发动机分级起动仿真分析[J]. 航空动力学报, 2024, 39(8):20220555 doi: 10.13224/j.cnki.jasp.20220555
ZHANG Ruiwen, LI Bin, WANG Dan, et al. Simulation analysis of staged startup of large thrust LOX/kerosene staged combustion rocket engine[J]. Journal of Aerospace Power, 2024, 39(8):20220555 doi: 10.13224/j.cnki.jasp.20220555
Citation: ZHANG Ruiwen, LI Bin, WANG Dan, et al. Simulation analysis of staged startup of large thrust LOX/kerosene staged combustion rocket engine[J]. Journal of Aerospace Power, 2024, 39(8):20220555 doi: 10.13224/j.cnki.jasp.20220555

大推力液氧煤油补燃发动机分级起动仿真分析

doi: 10.13224/j.cnki.jasp.20220555
详细信息
    作者简介:

    张睿文(1983-),男,工程师,博士,研究方向为液体火箭发动机系统设计

  • 中图分类号: V430

Simulation analysis of staged startup of large thrust LOX/kerosene staged combustion rocket engine

  • 摘要:

    分级起动是提高大推力液氧煤油补燃发动机起动品质和发射可靠性的重要措施。通过系统动力学仿真,分析了发动机分级起动特性。采用Modelica语言开发了通用模块化液体动力系统动态特性仿真模型库(Tulips)。基于模型库,自底向上逐层构建和验证了发动机系统仿真模型。仿真结果表明:初级工况设置在推力高于额定值40%时起动品质较好;初级工况越低,进入初级工况的延迟时间越长;初级工况较低时,提前推力室点火和燃料节流阀转级时刻,有利于提高起动品质;涡轮泵转动惯量较大时,进入初级工况更平稳。

     

  • 图 1  典型大推力液氧煤油补燃发动机系统原理图

    Figure 1.  Schematic of the typical large thrust LOX/kerosene staged combustion rocket engine system

    图 2  发动机分级起动过程

    Figure 2.  Staged startup process of the engine

    图 3  MWorks中的模型库结构树

    Figure 3.  Structure tree of the simulation model library in MWorks

    图 4  接口变量

    Figure 4.  Parameters of the interfaces

    图 5  发动机系统仿真模型

    Figure 5.  Simulation model of the engine system

    图 6  仿真模型的试验验证

    Figure 6.  Validation of the simulation models by physical experiments

    图 7  分级起动过程仿真结果

    Figure 7.  Simulation results of the staged startup process

    图 8  不同初级工况的起动特性

    Figure 8.  Startup characteristics of the engine with different prestages

    图 9  不同时序的起动特性

    Figure 9.  Startup characteristics of the engine with different timing sequences

    图 10  转级速率对起动特性的影响

    Figure 10.  Effects of the transfer rate on startup characteristics

    图 11  发生器容积对起动特性的影响

    Figure 11.  Effects of the gas generator volume on the startup characteristics

    图 12  燃气导管容积对起动特性的影响

    Figure 12.  Effects of the gas pipe volume on the startup characteristics

    图 13  系统惯性对起动特性的影响

    Figure 13.  Effects of the inertia on the startup characteristics

    图 14  起动方案优化

    Figure 14.  Improvement of the startup scheme

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出版历程
  • 收稿日期:  2022-07-31
  • 网络出版日期:  2023-10-19

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