Aerodynamic experiment on an ejector-jet

Shigeki Aoki, Jongsun Lee, Goro Masuya, Takeshi Kanda, Kenji Kudo

研究成果: Article

25 引用 (Scopus)


Characteristics of an ejector-jet were investigated experimentally. Evaluation of a new, one-dimensional model of suction performance under the aerodynamic choking condition and observation of mixing conditions through the pseudo-shock were primary subjects of study. Supersonic primary rocket exhaust was simulated by air, and secondary airflow was simulated by nitrogen. Parameters were the ratio of the total pressure of the secondary flow to that of the primary flow, the ratio of the entrance area of the secondary flow to that of the primary flow, and the Mach number of the primary flow. A throttling valve downstream of the mixing region simulated subsonic combustion and subsequent choking, and the throttling created a pseudo-shock ahead of the valve. The suction performance increased with increased total pressure of the secondary flow, the increase of the Mach number of the primary flow, or the increase of the area of the secondary flow. The calculated results on the suction performance agreed well with these measured values. When the gases became subsonic due to throttling, the primary and secondary fluids mixed well through the pseudo-shock and became almost uniform ahead of the downstream choking position. The mixing progressed quickly in the pseudo-shock.

ジャーナルJournal of Propulsion and Power
出版物ステータスPublished - 2005

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science

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  • これを引用

    Aoki, S., Lee, J., Masuya, G., Kanda, T., & Kudo, K. (2005). Aerodynamic experiment on an ejector-jet. Journal of Propulsion and Power, 21(3), 496-503.