ホールスラスタの推進効率および内部効率に与える磁場特性の影響  [in Japanese] Effect of Magnetic Field Characteristics on Thrust Efficiency and Internal Efficiency of a Hall Thruster  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

The effects of magnetic field strength and shape on thrust efficiency of a Hall thruster were examined experimentally using the THT-IV 1-kW-class Hall thruster. Thrusts were measured with varying magnetic field and channel geometry. Exhaust ion beam measurement was also implemented to evaluate internal efficiencies of propellant utilization efficiency, acceleration efficiency, voltage utilization efficiency and beam focusing efficiency. Spatial ion current profiles were measured with a Faraday probe and ion energy distribution functions were estimated from data with a retarding potential analyzer. Stable operation was obtained over the wide range of operational condition, and voltage utilization efficiency and beam focusing efficiency were estimated suitably. Acceleration efficiency and propellant utilization efficiency, however, were not able to be evaluated experimentally because the total ion current calculated by integrating the ion current density over the measured area was very small. Using obtained results, the relationships between each internal efficiency and thrust performance and between magnetic field characteristics and thrust efficiency were discussed. Consequently, it was expected that the change of magnetic field strength mainly affected acceleration efficiency and voltage utilization efficiency, and that the change of magnetic field shape affected voltage utilization efficiency in long discharge channel case and beam focusing efficiency in short channel case.

Journal

  • JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 55(636), 8-16, 2007

    THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Cited by:  1

Codes

  • NII Article ID (NAID)
    130000147078
  • NII NACSIS-CAT ID (NCID)
    AA11307372
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1344-6460
  • NDL Article ID
    8654054
  • NDL Source Classification
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL Call No.
    Z74-B503
  • Data Source
    CJPref  NDL  J-STAGE 
Page Top