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Detection of Extravehicular Activity Generated Contamination
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English
Abstract
Extravehicular activity (EVA) for maintenance purposes exposes the astronaut and associated gear to toxic substances such as hydrazine and ammonia. Adsorption of these compounds on surfaces of the EVA gear allows them to be carried into the S.S, Freedom atmosphere when the astronaut clears the airlock. A quadrupole based mass analyzer system is proposed for use as an External Contaminant Monitor (ECM) to monitor these and other compounds. The unit occupies approximately 0.5 cu ft, requires 16 W of power, and weighs 22 pounds. It can pinpoint contamination sources with high sensitivity, identifying both known target and also unknown, “stranger,” compounds.
Topic
Citation
Heppner, R., "Detection of Extravehicular Activity Generated Contamination," SAE Technical Paper 891593, 1989, https://doi.org/10.4271/891593.Also In
References
- American Conference of Governmental Industrial Hygienists Threshold Limit Values and Biological Exposure Indices for 19881989 ACGIH 6500 Glenway Ave., Bldg. D-7, Cincinnati, OH 45211
- Naumann R.J. Carignan G.R. Miller E.R. “Space Shuttle Molecular Scattering and Wake Vacuum Measurements” NASA Technical Memorandum-86509 June 1985
- Dawson P.H. Quadrupole Mass Spectrometry Elsevier 1976