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Proceedings Paper

Spacecraft Particulate Contaminant Redistribution
Author(s): A. Klavins; A. L. Lee
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Paper Abstract

This paper describes analyses that were performed in support of the Hubble Space Telescope (HST) particulate contamination control effort. The specific problems addressed include extension of available particle removal data to launch acoustic and random vibration conditions, development of an engineering model for transport of suspended particulates by airflow and in the presence of vehicle acceleration, turbulent diffusion, and migration of particulates over vibrating surfaces, and integration of the various models into a code that could be used to generate contamination level estimates for the HST primary mirror and other critical surfaces for the HST mission phases. The overall redistribution calculations were made assuming a specified initial contaminant distribution in terms of MIL STD 1246Å levels, and using predicted vibration data for the various HST surfaces and mission phases. As expected, the effects of airflow were found to be significant, particularly for the larger particles. Particles smaller than about 20 microns did not participate appreciably in the redistribution.

Paper Details

Date Published: 1 January 1987
PDF: 10 pages
Proc. SPIE 0777, Optical Systems Contamination: Effects, Measurement, Control, (1 January 1987); doi: 10.1117/12.967084
Show Author Affiliations
A. Klavins, Lockheed Missiles and Space Company, Inc. (United States)
A. L. Lee, Lockheed Missiles and Space Company, Inc. (United States)

Published in SPIE Proceedings Vol. 0777:
Optical Systems Contamination: Effects, Measurement, Control
A. Peter M. Glassford, Editor(s)

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