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- W2588871660 abstract "LEO High Voltage Solar Array Arcing ResponseModelInterim ReportNAG 3-576 Continuation V - April, 1989Roger N. MetzDept. of Physics and AstronomyColby CollegeWaterville, Maine 04901I. IntroductionMathematical modeling of the interactions of large, high-voltage solar arrays with the space plasma in Low Earth Orbit (LEO)has been conducted by the P.I. since 1984. An early series ofmodels sought to identify the main features of the electricalresponse of a model solar array/power system to arcing at points ofnegative bias on the array relative to the plasma potential (refs. 1-4). In addition to characterizing array responses to various arcs,this early work suggested that a description of the electricallyfloating state of an array prior to an arc requires a correctdescription of the plasma sheath that surrounds the array.One approach to the treatment of the plasma sheath near asolar array is contained in the two-fluid, warm plasma model (ref.5). If magnetic fields are ignored, the plasma equations in thismodel are the equations of continuity and of motion for theelectrons and the ions and Poisson's Equation connecting theelectron and ion charge densities with the electrostatic potential. Inthree dimensions, for irrotational flows, these comprise five partialdifferential equations in five scalar fields: the electron and ioncharge densities, the electron and ion velocity potentials and theelectrostatic potential.An active solar array has a distribution of voltage biasrelative to plasma ground over its surface. Solar cell layoutsdesigned to minimize vxB forces necessitate that some points ofsharp voltage discontinuity will be present on the array. Points ofshape discontinuity, such as edges and corners, also occur. Properdescription of the sheath near such discontinuities can be expected" @default.
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- W2588871660 date "1989-01-01" @default.
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- W2588871660 title "LEO High Voltage Solar Array Arcing Response Model Interim Report NAG 3-576 Continuation V - April, 1989" @default.
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