2023 年 1 巻 論文ID: 55
With the increasing usage of microsatellites in recent years, the demand for propulsion systems has also increased. Therefore, in this study, we developed a Microsatellite-Friendly Multi-Purpose PROPulsion system (MFMP-PROP) using 60 wt.% H2O2 as a basic propellant. MFMP-PROP can operate in the monopropellant mode for small impulse bit and the bipropellant mode for a relatively large thrust with a comparably high specific impulse. In this paper, the bipropellant mode is introduced and described, including reports on the progress concerning their research and development. As an approach to stable combustion, the effects of mixing ratio, preheating temperature, and mass flow rate on the operating characteristics were evaluated. As a result, we demonstrated a reliable and stable combustion range. The lifetime and continuous operating time were evaluated to investigate durability. As a result, 132 ignitions and 7,900 s of total operating time were achieved, during which the propellant consumption reached 1,375 g.
