This study provides an experimental analysis of the throttling methods implemented using a throttleable injector that generates a thrust in the range 24–64% on a 50 N monopropellant thruster using 90 wt.% hydrogen peroxide and MnO 2 / PbO / Al 2 O 3 . The injector proposed in this study is a dual-plate injector. It is capable of controlling the mass flow rate using radial slotted and showerhead-type plates. The slotted plate was rotated and pressed against the showerhead-type plate by intersecting a number of injection ports to control the mass flow rate. Firing tests were conducted over the throttling range to verify the feasibility of the concept of the dual-plate injector. The experimental data of the injectant flow rate and chamber pressure were analyzed parametrically. It was observed that the dual-plate injector had a characteristic velocity in the range 81–97% depending on the range of thrust. In addition, a correlation was observed between the characteristic velocity efficiency and response time of the injector under varying injection conditions; that is, the characteristic velocity tends to increase with a decrease in the response time. The result can be applied to optimal control systems, and also be used to execute advanced missions accurately using a monopropellant thruster.


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    Titel :

    Dual-Plate Injector for Throttling of Hydrogen Peroxide Monopropellant Thruster


    Beteiligte:
    Kim, Yehyun (Autor:in) / Kim, Hyuntak (Autor:in) / Jeong, Junyeong (Autor:in) / Kwon, Sejin (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.01.2022




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch