Thrust Measurement of Pure Magnetic Sail

DOI Web Site 3 Citations
  • UENO Kazuma
    Department of Space and Astronautical Science, The Graduate University for Advanced Studies (Sokendai)
  • KIMURA Toshiyuki
    Department of Aeronautics and Astronautics, Tokai University
  • AYABE Tomohiro
    Department of Aeronautics and Astronautics, Tokai University
  • FUNAKI Ikkoh
    Institute of Space and Astronautical Science, JAXA
  • YAMAKAWA Hiroshi
    Research Institute for Sustainable Humanosphere, Kyoto University
  • HORISAWA Hideyuki
    Department of Aeronautics and Astronautics, Tokai University

Abstract

A Pure Magnetic Sail is a deep space propulsion system consisting of a coil mounted on a spacecraft. In order to predict the thrust characteristics of a Pure Magnetic Sail in space, thrust measurement and magnetic field measurement were conducted using a scale model in a laboratory. To simulate the solar wind, a magnetoplasmadynamic arcjet provides a high density (2×1019 m-3) and high velocity (47 km/s) plasma flow that impinges on a 20-turn 25-mm-radius coil simulating a Pure Magnetic Sail. When the magnetic cavity size of the scale model (L) is increased from 0.12 to 0.17 m, the thrust increases from 0.47 to 0.92 N. Scaling up, this experiment corresponds to a 300-km diameter Pure Magnetic Sail in space. The thrust also depends on the coil tilt angle, which is the angle between the direction of the solar wind flow and the coil axis. The maximum thrust of 1.5 N is obtained for a tilt angle of 90 degrees.

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