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固液火箭发动机车轮形装药参数化设计与内弹道性能研究

李新田 蔡强 李延成 王雪坤 淡林鹏

李新田, 蔡强, 李延成, 等 . 固液火箭发动机车轮形装药参数化设计与内弹道性能研究[J]. 北京航空航天大学学报, 2020, 46(4): 724-730. doi: 10.13700/j.bh.1001-5965.2019.0314
引用本文: 李新田, 蔡强, 李延成, 等 . 固液火箭发动机车轮形装药参数化设计与内弹道性能研究[J]. 北京航空航天大学学报, 2020, 46(4): 724-730. doi: 10.13700/j.bh.1001-5965.2019.0314
LI Xintian, CAI Qiang, LI Yancheng, et al. Research on wagon-wheel fuel grain parametric design and internal ballistics performance of hybrid rocket motor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(4): 724-730. doi: 10.13700/j.bh.1001-5965.2019.0314(in Chinese)
Citation: LI Xintian, CAI Qiang, LI Yancheng, et al. Research on wagon-wheel fuel grain parametric design and internal ballistics performance of hybrid rocket motor[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(4): 724-730. doi: 10.13700/j.bh.1001-5965.2019.0314(in Chinese)

固液火箭发动机车轮形装药参数化设计与内弹道性能研究

doi: 10.13700/j.bh.1001-5965.2019.0314
详细信息
    作者简介:

    李新田, 男, 博士, 高级工程师。主要研究方向:飞行器动力系统总体设计

    通讯作者:

    李新田, E-mail: lixintian@buaa.edu.cn

  • 中图分类号: V436

Research on wagon-wheel fuel grain parametric design and internal ballistics performance of hybrid rocket motor

More Information
  • 摘要:

    装药设计和内弹道性能特性研究可为固液火箭发动机的设计和优化提供基础。建立了固液火箭发动机装药设计和内弹道计算的流程与方法,根据燃面退移规律,获得了车轮形装药燃烧面积、药柱通道面积等参数随燃去肉厚的变化关系。针对给定的设计指标及动力系统方案,开展了有中心孔车轮形、无中心孔车轮形、双D形及管形装药方案设计。计算结果表明:在相同的设计要求下,车轮形装药具有更大的燃烧面积、更高的装填分数及更小的药柱长径比;管形装药的氧燃比、燃烧室压强、推力等性能参数随时间变化更小;减小药柱外径可提高管形、双D形装药的装填分数,但同时会提高药柱的长径比。研究结果对车轮形装药固液火箭发动机内弹道特性及规律的认识可起到较好的支撑作用。

     

  • 图 1  内弹道计算流程图

    Figure 1.  Flowchart of internal ballistics calculation

    图 2  有中心孔车轮形装药示意图

    Figure 2.  Schematic diagram of wagon-wheel fuel grain with central port

    图 3  无中心孔车轮形装药示意图

    Figure 3.  Schematic diagram of wagon-wheel fuel grain without central port

    图 4  双D形装药示意图

    Figure 4.  Schematic diagram of double-D fuel grain

    图 5  特征速度和真空比冲随氧燃比变化

    Figure 5.  Variation of characteristic velocity and vacuum specific impulse with oxidizer-to-fuel ratio

    图 6  各装药设计方案横截面示意图

    Figure 6.  Schematic diagram of cross section of different fuel grain design schemes

    图 7  燃线长度和药柱通道面积随时间变化

    Figure 7.  Variation of burning line length and fuel port area with time

    图 8  氧化剂流率和燃速随时间变化

    Figure 8.  Variation of oxidizer mass flow rate and fuel regression rate with time

    图 9  氧燃比、燃烧室压强和推力随时间变化

    Figure 9.  Variation of oxidizer-to-fuel ratio, combustion pressure and thrust with time

    表  1  各装药设计方案主要结果

    Table  1.   Main results of different fuel grain design schemes

    方案 药型 D/mm L/mm e/mm η/% α t/s pc/MPa F/N L/D
    方案1 有中心孔车轮形 300 606 22 68.05 3.16 80.3 3.976 5 000.3 2.02
    方案2 无中心孔车轮形 300 625 22 67.80 3.14 80.2 3.980 5 004.3 2.08
    方案3 双D形 300 1 051 19 37.81 3.16 81.7 3.976 5 000.2 3.50
    方案4 管形 300 1 730 18 22.56 3.15 82.0 3.980 5 004.2 5.77
    方案5 双D形 233 1 012 29 67.07 3.15 80.8 3.976 5 000.6 4.34
    方案6 管形 179 1 585 39 68.16 3.15 80.9 3.978 5 001.9 8.85
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-06-17
  • 录用日期:  2019-09-29
  • 刊出日期:  2020-04-20

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