Abstract
A failure model of the truss deployable antenna was established using faulty tree theory,and based on which failure probability formulations for the antenna system were deduced using probability theory. Deployment analysis formulations for truss deployable antenna were established using dynamic theory. The deployment process of the antenna was analyzed when there were torsional spring failures at different positions,then those positions where the antenna could not deploy fully or the surface error was very high when torsional springs failed were obtained,and those positions where the antenna could deploy smoothly and the surface error was low when torsional springs failed were also obtained. Combining these results and reliability analysis,the reliability of deployable truss antenna can be analyzed accurately. Finally,the reliability degree of truss deployable antenna was analyzed with an example,and the result is 0.999 787 571.
Published Version
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