单轨火箭橇-发动机一体化设计

郝芬芬 赵项伟 王磊 程明灿 刘禁

郝芬芬, 赵项伟, 王磊, 程明灿, 刘禁. 单轨火箭橇-发动机一体化设计[J]. 爆炸与冲击, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259
引用本文: 郝芬芬, 赵项伟, 王磊, 程明灿, 刘禁. 单轨火箭橇-发动机一体化设计[J]. 爆炸与冲击, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259
HAO Fenfen, ZHAO Xiangwei, WANG Lei, CHENG Mingcan, LIU Jin. Integrated design of monorail rocket sled and motor[J]. Explosion And Shock Waves, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259
Citation: HAO Fenfen, ZHAO Xiangwei, WANG Lei, CHENG Mingcan, LIU Jin. Integrated design of monorail rocket sled and motor[J]. Explosion And Shock Waves, 2024, 44(5): 052901. doi: 10.11883/bzycj-2023-0259

单轨火箭橇-发动机一体化设计

doi: 10.11883/bzycj-2023-0259
详细信息
    作者简介:

    郝芬芬(1987- ),女,博士研究生,副研究员,haofenfen2010@stu.xjtu.edu.cn

    通讯作者:

    赵项伟(1992- ),男,硕士,助理研究员,zhaoxiangwei1992@sina.cn

  • 中图分类号: O389; TJ013.2

Integrated design of monorail rocket sled and motor

  • 摘要: 针对传统单轨火箭橇系统零部件附加质量过高的问题,提出了一种由发动机和滑靴组成的箭橇一体化结构,采用三维欧拉-伯努利梁单元对火箭橇系统进行离散,对滑靴位置做寻优计算,发现中滑靴处于前后滑靴的中间位置时,系统振动量最小,位置分布最优。设计了3种滑靴与发动机壳体连接的方案:(1) 滑靴通过锯齿形焊缝与发动机壳体包覆连接,(2) 发动机壳体直接堆放在滑靴靴体上,(3) 滑靴通过支撑板过渡件与发动机壳体连接。采用橇-轨耦合动力学方法计算方案2和方案3的在轨安全性,方案3的火箭橇系统力学环境更优,其系统附加质量比传统单轨橇降低了73%。最后,开展了箭橇一体化验证试验,验证了箭橇一体化设计方案的合理性。
  • 图  1  传统单轨橇

    Figure  1.  Traditional monorail sled

    图  2  火箭橇模型

    Figure  2.  Model of rocket sled

    图  3  火箭橇离散模型

    Figure  3.  Discrete model of rocket sled

    图  4  不同中滑靴位置时各滑靴竖向过载的均方根

    Figure  4.  Root mean square of vertical overloads for each slipper located at different middle slipper positions

    图  5  不同中滑靴位置时各滑靴侧向过载的均方根

    Figure  5.  Root mean square of lateral overloads for each slipper located at different middle slipper positions

    图  6  滑靴和发动机壳体的固连方案

    Figure  6.  The retention scheme of slipper and motor housing

    图  7  轨道的不平顺度

    Figure  7.  Roughness of the rail

    图  8  轨道系统

    Figure  8.  Rail system

    图  9  橇-轨耦合系统模型

    Figure  9.  Sled-rail coupling system model

    图  10  橇-轨耦合系统模型的局部网格划分

    Figure  10.  Local grid model of sled-rail coupling system

    图  11  试验橇体模型

    Figure  11.  Model of test sled

    图  12  发动机中段顶部的振动过载

    Figure  12.  Vibration overloads at the top of the mid-motor section

    图  13  发动机中段顶部振动过载的均方根

    Figure  13.  Root mean square of vibration overloads at the top of the mid-motor section

    图  14  一体化橇与传统橇发动机中段顶部振动过载的均方根对比

    Figure  14.  Comparison of root mean square of vibration overloads between integrated sled and traditional sled at the top of the mid-motor section

    表  1  720 m/s时各部件的气动力

    Table  1.   Aerodynamic force of each component at the speed of 720 m/s

    部件 气动阻力/N 气动升力/N
    二级橇舱体 13693 −4630
    二级橇阻力板 15370 −223
    一级橇 8613 7011
    二级橇前滑靴 10122 −1724
    二级橇后滑靴 1987 −316
    一级橇前滑靴 742 86
    下载: 导出CSV

    表  2  滑靴间隙设置

    Table  2.   Slippers gap setting

    滑靴编号侧向间隙/mm竖向间隙/mm
    10.701.50
    20.701.50
    30.661.44
    40.661.44
    50.731.65
    60.781.77
    下载: 导出CSV

    表  3  关键部件振动过载的均方根

    Table  3.   Root mean square of overloads for critical components

    部件 σ/g
    方案2 方案3
    竖向 侧向 竖向 侧向
    前滑靴 55 68 57 65
    中滑靴 36 81 39 50
    后滑靴 65 104 39 80
    发动机前端 27 91 22 49
    发动机后端 27 98 22 38
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-07-21
  • 修回日期:  2024-01-22
  • 网络出版日期:  2024-03-04
  • 刊出日期:  2024-05-08

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