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Updated: Jul 9, 2026

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
12:22

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

Development of a two-dimensional dual pendulum thrust stand for Hall thrusters.

N Nagao1, S Yokota, K Komurasaki

  • 1Department of Aeronautics and Astronautics, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

The Review of Scientific Instruments
|December 7, 2007
PubMed
Summary

A novel dual pendulum thrust stand precisely measures Hall thruster vectors. This innovative design cancels thermal drift, enabling accurate axial and transverse thrust measurements.

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Area of Science:

  • Aerospace Engineering
  • Plasma Physics

Background:

  • Accurate measurement of Hall thruster performance is crucial for advanced spacecraft propulsion.
  • Existing methods may be limited by thermal drift and precision.

Purpose of the Study:

  • To develop and validate a two-dimensional dual pendulum thrust stand for precise Hall thruster vector measurement.
  • To quantify axial and transverse thrust components and thrust vector deviation.

Main Methods:

  • A dual pendulum system with crossover knife-edges was designed to measure thrust via displacement.
  • A steering mechanism allowed for thrust vector angle adjustments.
  • Thermal drift was canceled by the differential measurement between pendulums.
  • Calibration was performed using a pulley and weight system.

Main Results:

  • The thrust stand achieved measurement errors below 0.25 mN (1.4%) for axial thrust and 0.09 mN (1.4%) for transverse thrust.
  • Thrust vector deviation was measured at +/-2.3 degrees with an error of +/-0.2 degrees under typical operating conditions.

Conclusions:

  • The developed dual pendulum thrust stand offers high precision for measuring Hall thruster axial and transverse thrust vectors.
  • The system effectively mitigates thermal drift, providing reliable data for thruster characterization and optimization.