NDLI: Direct simulation monte carlo prediction of on-orbit contaminant deposit levels for haloe

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Direct simulation monte carlo prediction of on-orbit contaminant deposit levels for haloe

Content Provider	NASA Technical Reports Server (NTRS)
Author	Rault, Didier F. G. Woronowicz, Michael S.
Copyright Year	1994
Description	A three-dimensional version of the direct simulation Monte Carlo method is adapted to assess the contamination environment surrounding a highly detailed model of the Upper Atmosphere Research Satellite. Emphasis is placed on simulating a realistic, worst-case set of flow field and surface conditions and geometric orientations for the satellite in order to estimate an upper limit for the cumulative level of volatile organic molecular deposits at the aperture of the Halogen Occultation Experiment. A detailed description of the adaptation of this solution method to the study of the satellite's environment is also presented. Results pertaining to the satellite's environment are presented regarding contaminant cloud structure, cloud composition, and statistics of simulated molecules impinging on the target surface, along with data related to code performance. Using procedures developed in standard contamination analyses, along with many worst-case assumptions, the cumulative upper-limit level of volatile organic deposits on HALOE's aperture over the instrument's 35-month nominal data collection period is estimated at about 13,350 A.
File Size	4733464
Page Count	122
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19950005176
Archival Resource Key	ark:/13960/t47q3x685
Language	English
Publisher Date	1994-08-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Halogen Occultation Experiment Outgassing Spacecraft Instruments Contaminants Spacecraft Contamination Computerized Simulation Monte Carlo Method Upper Atmosphere Research Satellite Uars Organic Compounds Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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