Spacecraft contamination investigation by direct simulation Monte Carlo - Contamination on UARS/HALOE

Details Spacecraft contamination investigation by direct simulation Monte Carlo - Contamination on UARS/HALOE Spacecraft contamination investigation by direct simulation Monte Carlo - Contamination on UARS/HALOE

Jan 1993

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

AIAA, Aerospace Sciences Meeting and Exhibit, 31st, Reno, NV, Jan. 11-14, 1993, 12 p.

Computer Science

Performance

Environment Simulation, Halogen Occultation Experiment, Monte Carlo Method, Spacecraft Contamination, Upper Atmosphere Research Satellite (Uars), Earth Atmosphere, Flow Distribution, Parallel Processing (Computers), Trace Contaminants

Scientific paper

A three-dimensional version of the direct simulation Monte Carlo method is adapted to study the contamination environment surrounding a highly detailed model of the Upper Atmosphere Research Satellite, with the ultimate goal of estimating the cumulative level of molecular deposits on critical optical surfaces of the Halogen Occultation Experiment. Emphasis is placed on describing the development of preprocessing codes that simplify the incorporation of geometry and outgassing data into the main run code. A novel use of parallel processing software allows use of multiple processors to solve different regions of the overall flowfield. Initial results relating to contaminant cloud structure, cloud composition, and statistics of simulated molecules impinging on the Halogen Occultation telescope's aperture plane are presented, along with data related to code performance.

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