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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dual-Plate Injector for Throttling of Hydrogen Peroxide Monopropellant Thruster


    Contributors:
    Kim, Yehyun (author) / Kim, Hyuntak (author) / Jeong, Junyeong (author) / Kwon, Sejin (author)

    Published in:

    Publication date :

    2021-05-19


    Size :

    8 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English