Hypervelocity impact effects on solar cells

Details Hypervelocity impact effects on solar cells Hypervelocity impact effects on solar cells

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aubu.rept.....r&link_type=abstract

Final Technical Report Auburn Univ., AL. Space Power Inst.

Mathematics

Probability

Hypervelocity Impact, Meteorite Collisions, Meteoroid Hazards, Solar Arrays, Solar Cells, Space Debris, Cosmic Dust, Degradation, Impact Damage

Scientific paper

One of the space hazards of concern is the problem of natural matter and space debris impacting spacecraft. This phenomena has been studied since the early sixties and a methodology has been established to determine the relative abundance of meteoroids as a function of mass. As the mass decreases, the probability of suffering collisions increases, resulting in a constant bombardment from particles in the sub-micron range. The composition of this 'cosmic dust' is primarily Fe, Ni, Al, Mg, Na, Ca, Cr, H, O, and Mn. In addition to mechanical damage, impact velocities greater than 5 k m/sec can produce shock induced ionization effects with resultant surface charging and complex chemical interactions. The upper limit of the velocity distribution for these particles is on the order of 70 km/sec. The purpose of this work was to subject samples from solar power arrays to debris flux typical of what would be encountered in space, and measure the degradation of the panels after impact.

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