A new property of spacecraft surface materials, the threshold temperature for high-voltage charging, is defined. A table of threshold temperatures, calculated for various spacecraft surface materials, is presented. This property explains and unifies several recently-identified phenomena affecting spacecraft charging, including: the existence of multiple floating potentials for certain spacecraft surfaces in certain external environments; sensitivity effects in the numerical prediction of spacecraft potentials; sudden jumps in both observed and simulated spacecraft potentials in slowly-varying environments; and observed threshold effects in high-voltage charging. In addition, knowledge of the threshold temperature for proposed or existing surface materials provides a simple, effective way to evaluate their charging behavior when exposed to various space environments. (Author)


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    Title :

    Threshold Temperature Effect in High-Voltage Spacecraft Charging


    Contributors:

    Publication date :

    1983


    Size :

    16 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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