Preferable Hall-Effect Thruster Performances for Orbit Transfer in a Resistive Medium

Details Preferable Hall-Effect Thruster Performances for Orbit Transfer in a Resistive Medium Preferable Hall-Effect Thruster Performances for Orbit Transfer in a Resistive Medium

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..41b&link_type=abstract

Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard

Computer Science

Performance

Scientific paper

This paper presents a method for selection of preferable Hall-effect thruster performances for satellite orbit transfer taking into consideration the atmospheric drag. Determination of optimal transfer characteristics is a complicated task. To achieve smaller propellant and energy consumption requirements, transfer time is to be increased, and vice versa. With a larger exhaust velocity, energy consumption and transfer time increase, as well as the propellant consumption. As a result, different thrusters are required for different transfer tasks. In general, the cost of electric thruster development is far more expensive than the cost of serial thruster production. It is advisable to estimate the minimal number of thruster dimension-types taking into account the possible changes in their input (mass flow rate, voltage) and output (thrust, power, specific impulse) parameters. The present work is based on previously obtained results on: 1. Optimal thrust acceleration for a satellite using electric propulsion for orbit transfer under the influence of atmospheric drag to achieve minimum fuel consumption. 2. A mathematical model of Hall-effect thrusters on the basis of real ground test results that established analytic dependences between input and output thruster performances. In this work is shown that with only a few thruster types a wide range of transfer tasks can be efficiently implemented. The basic requisite condition is to develop and test thrusters in a wide range of input parameters. Overall optimization dictates that a wide operating range is more important than very high efficiency or specific impulse for a limited operating range.

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