This study aimed to conceptually introduce a novel method of dual-mode operation of nontoxic hypergolic thruster using decomposition gas of hydrogen peroxide ( H 2 O 2 ) and to experimentally assess the technical feasibility of the concept. An engineering model of a 500-N-scale nontoxic hypergolic thruster was tested with a nontoxic hypergolic combination that consisted of hydrocarbon fuel (“stock 3”) and 95 wt % H 2 O 2 as an oxidizer. Technically, dual-mode operation involves transition from a bipropellant mode to a monopropellant mode, or vice versa, which can provide great flexibility in terms of the deep throttling of the thrust level and the suppression of chugging instability at low thrust levels. The phase change of the oxidizer played a key role in the dual-mode operation. In particular, through hot-firing tests, system instabilities related to the mode transition were experimentally investigated. It was also confirmed that deep throttling of the thrust level was feasible through the mode transition.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Difficulties in Dual-Mode Operation of Nontoxic Hypergolic Thruster Using Decomposition of H 2 O 2


    Contributors:
    Kang, Hongjae (author) / Kim, Hyuntak (author) / Kwon, Sejin (author)

    Published in:

    Publication date :

    2019-07-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Suppression of Hard Start for Nontoxic Hypergolic Thruster Using H 2 O 2 Oxidizer

    Kang, Hongjae / Lee, Eunkwang / Kwon, Sejin | AIAA | 2017

    Free access

    Characterization of Pintle Engine Performance for Nontoxic Hypergolic Bipropellants

    Austin, B. / Heister, S. / American Institute of Aeronautics and Astronautics et al. | British Library Conference Proceedings | 2002