AbstractA numerical calculation of shock wave characteristics in the isolator of central strut rocket-based combined cycle (RBCC) engine fueled by kerosene was carried out in this paper. A 3D numerical model was established by the DES method. The kerosene chemical kinetic model used the 9-component and 12-step simplified mechanism model. Effects of fuel equivalence ratio, inflow total temperature and central strut rocket on-off on shock wave characteristics were studied under Ma5.5. Results demonstrated that with the increase of equivalence ratio, the leading shock wave moves toward upstream, accompanied with higher possibility of the inlet unstart. However, the leading shock wave moves toward downstream as the inflow total temperature rises. After the central strut rocket is closed, the leading shock wave moves toward downstream, which can reduce risks of the inlet unstart. State of the shear layer formed by the strut rocket jet flow and inflow can influence the shock train structure significantly.

    HighlightsThe shock train characteristics of central strut RBCC engine fueled by kerosene was carried out.The influences of the parameters on shock wave characteristics were obtained.The functions of the central strut and the strut engine jet were obtained.


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    Titel :

    Research on shock wave characteristics in the isolator of central strut rocket-based combined cycle engine under Ma5.5


    Beteiligte:
    Wei, Xianggeng (Autor:in) / Xue, Rui (Autor:in) / Qin, Fei (Autor:in) / Hu, Chunbo (Autor:in) / He, Guoqiang (Autor:in)

    Erschienen in:

    Acta Astronautica ; 140 ; 284-292


    Erscheinungsdatum :

    2017-08-10


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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