Proposal of specific impulse prediction method for bipropellant thrusters

Yuto Terauchi, Chihiro Inoue, Yu Daimon, Go Fujii

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


For attitude control and orbital transfer of satellites, bipropellant thrusters are crucial components in space propulsion systems. The overall performance of the thruster is evaluated by the specific impulse (ISP), which directly determines the lifetime and propellant mass of satellites. Therefore, in the present study, a new theoretical framework is firstly proposed to predict ISP directly from injection conditions and nozzle configurations by considering the distribution of mixture and mass flow rates in the thrust chamber. As the performance index of the combustion chamber, the characteristic velocity is formulated. The frozen flow assumption is applied to the nozzle internal flow to calculate the thrust coefficient. The analytical results of ISP are compared to the corresponding combustion test of a 10 N bipropellant thruster using a propellant combination of mixed nitrogen oxides with 3% nitric oxide and monomethyl hydrazine, which validates the prediction model proposed.

ジャーナルTransactions of the Japan Society for Aeronautical and Space Sciences
出版ステータス出版済み - 2020

!!!All Science Journal Classification (ASJC) codes

  • 航空宇宙工学
  • 宇宙惑星科学


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