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  • transient simulation of the ignition over-pressure phenomenon in the altitude test of the staged-combustion-cycle rocket engine

    Paper number

    IAC-19,C4,IP,1,x50742

    Author

    Dr. Hongyue Wang, China, Beijing institute of aerospace testing technology

    Coauthor

    Mr. Fanchao Kong, China, Beijing institute of aerospace testing technology

    Coauthor

    Dr. Mao Li, China, Beijing institute of aerospace testing technology

    Coauthor

    Mrs. Ruimin Liu, China, Beijing institute of aerospace testing technology

    Coauthor

    Mr. ZHANG JIAXIAN, China, Beijing institute of aerospace testing technology

    Coauthor

    Mr. Chuangchuang Yu, China, Beijing institute of aerospace testing technology

    Coauthor

    Dr. Jia Zhang, China, Beijing institute of aerospace testing technology

    Year

    2019

    Abstract
    The aim of this paper is to analyze the Ignition Over-Pressure Phenomenon during the altitude test of the staged-combustion-cycle rocket engine. Using the transient CFD method, the start-up of diffusor and evacuation of the vacuum chamber was simulated in 1s after the ignition. The results illustrated how the evolution of shockwave system in the nozzle and the diffusion affects the gas velocity at the vacuum chamber exit, and therefore determines the peak of the over-pressure which is about 130\%-140\% of the original pressure in the vacuum chamber. Our results also indicated significant pressure impact at the diffusor inlet and throat which can be as high as 0.3MPa. Finally, the effect of geometric dimension on the over-pressure value and start-up time was discussed by comparison of results for three different models.
    Abstract document

    IAC-19,C4,IP,1,x50742.brief.pdf

    Manuscript document

    (absent)