Simulation of cometary nuclei

Details Simulation of cometary nuclei Simulation of cometary nuclei

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.278..501g&link_type=abstract

In ESA, Proceedings of the International Symposium on the Diversity and Similarity of Comets p 501-508 (SEE N88-21884 14-91)

Physics

6

Comet Nuclei, Experiment Design, Space Environment Simulation, Space Simulators, Cosmic Dust, Ice, Materials Handling, Samples

Scientific paper

Simulation experiments of cometary nuclei are planned in a satellite test facility (space simulator). This cylindrical chamber (3.5 m diameter and 4.8 m length) is equipped with a liquid nitrogen cooled inner surface and a solar radiation simulator up to 1.2 solar constants. Preparatory experiments are performed in small vacuum chambers. Sample production is by evaporation of a water-mineral suspension onto a cold plate or injection of the suspension into liquid nitrogen. Areas to be studied are: formation of regions with different activity such as crusts, release mechanisms of dust particles, and temperature profile and variations as a function of solar radiation intensity. The program is directed to test cometary models, to assist future cometary missions and to provide knowledge of sample handling at low temperatures.

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