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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (23): 629563-629563.doi: 10.7527/S1000-6893.2023.29563

• Special Topic: Reusable Launch Vehicle Technology • Previous Articles    

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

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

CLC Number: