Cosmic dust analogue material condensation in microgravity: The Stardust programme - First results and future activities

Details Cosmic dust analogue material condensation in microgravity: The Stardust programme - First results and future activities Cosmic dust analogue material condensation in microgravity: The Stardust programme - First results and future activities

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992wadc.iafcq....f&link_type=abstract

IAF, International Astronautical Congress, 43rd, Washington, Aug. 28-Sept. 5, 1992. 14 p. Research supported by ASI.

Astronomy and Astrophysics

Astronomy

Cosmic Dust, Reduced Gravity, Spaceborne Experiments, Vapor Deposition, C-135 Aircraft, Magnesium, Refractory Materials, Zinc

Scientific paper

Initial results are presented from airborne experiments investigating the vapor phase condensation in microgravity, carried out in the framework of the Stardust international program. Special attention is given to the design and operation of the experimental equipment, which includes the furnace for producing vapors from different materials and the cloud chamber in which the vapor nucleation occurs. A two-part mathematical model was developed to describe the transport processes in the nucleation chamber. Results obtained from three experimental series were conducted with Mg and Zn aboard NASA's KC-135 reduced-gravity research aircraft showed that nucleation front (smoke cloud) was quite different in appearance in microgravity from that typically observed at 1-g condition. The Mg and Zn particles exhibited significant differences in shape; there was some evidence of coagulation.

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