Effects of dust accumulation and removal on radiator surfaces on Mars

Details Effects of dust accumulation and removal on radiator surfaces on Mars Effects of dust accumulation and removal on radiator surfaces on Mars

Jan 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..217.1378g&link_type=abstract

Proceedings of the eighth symposium on space nuclear power systems. AIP Conference Proceedings, Volume 217, pp. 1378-1384 (1991

Physics

Lunar, Planetary, And Deep-Space Probes

Scientific paper

Tests were carried out to assess the impact of wind blown dust accumulation and abrasion on radiator surfaces on Mars. High emittance arc-textured copper (Cu) and niobium-1%-zirconium (Nb-1%Zr) samples were subjected to basaltic dust laden wind at Martian pressure (1000 Pa) at speeds varying from 19 to 97 m/s in the Martian Surface Wind Tunnel at NASA Ames Research Center. The effect of accumulated dust was also observed by pre-dusting some of the samples before the test. Radiator degradation was determined by measuring the change in the emittance after dust was deposited and/or removed. The principal mode of degradation was abrasion. Arc-textured Nb-1%Zr proved to be more susceptible to degradation than Cu, and pre-dusting appeared to be an effective way to lessen the abrasion.

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