Abstract
The debris impact may cause the degradation of solar cells because of the cumulative effect (Lei, Cumulative effects of micrometeoroid impacts on spacecraft, 2010), and even damage several strings of solar cells depending on the diameter of the debris. Hypervelocity impact event may excite plasma and by spreading the plasma can initiate discharges that are able to induce arcing on the solar circuits that will decrease the output power of solar arrays. The effect of impacts on wires and aluminum honeycomb is also discussed. The risk of impact on solar array of a GEO satellite will be analyzed, and the probability of impact will also be calculated by using the MASTER2005 flux model.
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