Abstract
Preliminary measurements of a magnetic thrust vectoring (MTV) system to be implemented in a magnetic nozzle RF plasma thruster are presented. The system comprises two coaxial coils capable of generating magnetic nozzle deflections of 15 degrees with respect to the system axis. The MTV system is numerically modelled to compute the magnetic field vector. The experiments are carried out in Huia, a RF plasma reactor dedicated to the study of magnetic nozzle electrode-less plasma thrusters at the University of Auckland. The ion saturation current is mapped in the plasma source using a Langmuir probe for two cases: 1) the magnetic nozzle is axisymmetrical, and 2) the magnetic nozzle is deflected. Spatial measurements showan increase in ion saturation current in the radial direction following the magnetic field gradient, and the plasma profile seems to trail the magnetic field streamlines in the region of ion magnetisation. Validation of plasma potential measurements obtained from a retarding field energy analyser is also presented.
Published Version
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