Development of Hybrid Kick-Motors for Share-Riding Small Space-Probes

DOI

Bibliographic Information

Other Title
  • 相乗り小型宇宙機用ハイブリッドキックモータの開発

Abstract

<p>The authors are developing a hybrid kick motor for small share-riding spacecraft. The authors launched the venture company Letara to commercialize hybrid kick motors in 2020. Critical technologies for practical use are fuel regression history prediction, nozzle erosion rate prediction, and ignition technology capable of re-ignition. This paper first describes why hybrid kick motors are necessary and how the authors started this development. The nitrous oxide the authors employed as a liquid oxidizer has a vapor pressure above the combustion chamber pressure. As a result, the combustion flow field changes according to the injection conditions, changing the axial distribution of the fuel regression velocity. The successful measurement of nozzle erosion rate history, which has been difficult in hybrid rockets, has allowed the authors to elucidate the mechanism of nozzle erosion. The introduction of a re-ignitable ignition system appropriate for small spacecraft with limited resources follows. Finally, the development status of a small-scale hybrid kick motor is presented.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390581070839168512
  • DOI
    10.20619/jcombsj.66.215_9
  • ISSN
    24241687
    13471864
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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