Abstract
The demand for high power satellites with greater reliability is ever increasing. The performance of these satellites directly relies on the development of new systems such as high power transfer assembly. Electric arc in vacuum is known to affect the functioning of satellite power transfer assembly and is under rigorous investigation to understand and mitigate its undesirable effects. The complexity of theorizing the vacuum arc phenomenon necessitated the devising of experiments to gather deep insight into the arc phenomenon. The study aims to identify the mechanism with respect to satellite power transfer assembly for a) an arc initiation b) sustenance of an initiated arc and c) effect of sustained arc on adjacent circuits. The paper discusses the experiments to recognize the conditions for arc initiation and sustenance with respect to potential difference, current, electric field, vacuum level, and materials. An operating threshold for the parameters is identified beyond which an initiated arc can sustain and short the adjacent circuits thus destabilizing the entire system. The mechanism for such propagation is identified and the steps to safeguard the system are also discussed. The experiments are part of Geo-SAT high power transfer assembly development.
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