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    Simulation and Predicted Performance of the Balcones GEDI Experiment

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    PR_49.pdf (2.957Mb)
    Date
    1986-11
    Author
    Wu, A. Y.
    Driga, M. D.
    Woodson, H. H.
    Zowarka, Jr, R. C.
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    Abstract
    The guided electromagnetic defense interceptor (GEDI) railgun launcher system is powered by six Balcones homopolar generators (BHPG), each of which stores 10 MJ in kinetic energy. Each BHPG is connected to a coaxial inductor which stores about half of the BHPG's energy when charged to 1.2 MA. Six two-stage opening switches open in sequence or simultaneously after current peak, directing the current to the railgun armature. As much as 7.2 MA can be delivered to the railgun. A computer simulation code is developed to perform design parameter studies, sensitivity studies, and to predict GEDI system behaviors. The code is general enough for analyzing any railgun driven by multi-HPG inductors coupled with two-stage opening switches. A Gear type, multistep algorithm is used to overcome stiffness of the differential system caused by the way the switches are modeled. GEDI system performances are predicted with the code based on most updated component parameters.
    Department
    Center for Electromechanics
    Subject
    Rotating Machine EM Launch
    guided electromagnetic defense interceptor railgun
    em gun
    homopolar generator
    URI
    http://hdl.handle.net/2152/30739
    Citation
    A.Y. Wu, M.D. Driga, H.H. Woodson, and R.C. Zowarka Jr., “Simulation and predicted performance of the Balcones GEDI experiment, “IEEE Transactions on Magnetics, vol. Mag-22, no. 6, November 1986, pp. 1817-1822.
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