Abstract
A High Voltage Solar Array Experiment has been developed for space demonstration and will be operated onboard the Space Flyer Unit. The flight experiment should demonstrate the generation of high-voltage photovoltaic power with a maximum bus voltage of 260 V. In addition, the plasma interactions caused by the high voltage will be investigated during the flight of the satellite in low Earth orbit. Laboratory experiments and numerical simulations predict about 1 mA of ion collection and a maximum arc rate of several arcs per ten seconds during the Experiment. Nomenclature e = electric charge k = Boltzmann constant L = characteristic length of solar array M = ion mass Ne = electron density Nt = ion density NO = plasma density at background P = parameter for a scaling law Te = electron temperature U = orbital velocity V = electrical potential Va = absolute value of bias voltage v - ion velocity s = permeability of vacuum (/> = electrical potential normalized by ion kinetic energy, MU2/2e
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