航空学报 > 2023, Vol. 44 Issue (23): 629563-629563   doi: 10.7527/S1000-6893.2023.29563

可重复使用运载火箭技术专栏

可重复使用运载火箭返回段低温流体行为特性

容易1, 刘辉2, 于子文2, 朱平平2, 彭越2, 于佳晖3   

  1. 1.中国运载火箭技术研究院,北京 100076
    2.北京宇航系统工程研究所,北京 100076
    3.北京强度环境研究所,北京 100076
  • 收稿日期:2023-09-11 修回日期:2023-09-18 接受日期:2023-10-07 出版日期:2023-12-15 发布日期:2023-10-17
  • 基金资助:
    国家级项目

Behavior of cryogenic propellant in return stage of reusable launch vehicle

Yi RONG1, Hui LIU2, Ziwen YU2, Pingping ZHU2, Yue PENG2, Jiahui YU3   

  1. 1.China Academy of Launch Vehicle Technology,Beijing 100076,China
    2.Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China
    3.Beijing Institute of Structure and Environment Engineering,Beijing 100076,China
  • Received:2023-09-11 Revised:2023-09-18 Accepted:2023-10-07 Online:2023-12-15 Published:2023-10-17
  • Supported by:
    National Level Project

摘要:

可重复使用运载火箭在返回段复杂干扰作用下,贮箱内低温推进剂与高温气枕剧烈掺混,造成贮箱压力下降、推进剂温度升高等问题。针对垂直起降(VTVL)运载火箭返回段推进剂掺混及重定位过程开展研究,首次建立了液氧掺混后行为特性仿真模型并通过加速落塔试验进行验证,研究垂直起降运载火箭返回段复杂干扰作用下低温流体行为特性,获得推进剂形态、贮箱压力、推进剂温度及蒸发量等变化规律,为推进剂管理系统及增补压方案设计提供支撑。

关键词: 可重复使用, 返回段, 液氧, 传热传质, 流体行为特性

Abstract:

Under the complex interference of the return stage of the reusable launch vehicle, the cryogenic propellant in the tank and the high-temperature ullage are violently mixed, resulting in a series of problems, such as tank pressure drop and propellant temperature rise. In this paper, the propellant mixing and reorientation process of Vertical Take-off and Vertical Landing (VTVL) launch vehicle is studied. A simulation model of the behavior of liquid oxygen mixing is established for the first time and verified by the accelerated drop tower test. The model was used to study the behavior characteristics of cryogenic propellant under the complex interference in the return stage of a VTVL launch vehicle, and the variation laws of propellant morphology, tank pressure, propellant temperature and evaporation were obtained, which provided support for the design of propellant management system and supplementary pressure scheme.

Key words: reusable, return stage, liquid oxygen, heat and mass transfer, propellant behavior characteristics

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