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Electronic nose for space program applicationsThe ability to monitor air contaminants in the shuttle and the International Space Station is important to ensure the health and safety of astronauts, and equipment integrity. Three specific space applications have been identified that would benefit from a chemical monitor: (a) organic contaminants in space cabin air; (b) hypergolic propellant contaminants in the shuttle airlock; (c) pre-combustion signature vapors from electrical fires. NASA at Kennedy Space Center (KSC) is assessing several commercial and developing electronic noses (E-noses) for these applications. A short series of tests identified those E-noses that exhibited sufficient sensitivity to the vapors of interest. Only two E-noses exhibited sufficient sensitivity for hypergolic fuels at the required levels, while several commercial E-noses showed sufficient sensitivity of common organic vapors. These E-noses were subjected to further tests to assess their ability to identify vapors. Development and testing of E-nose models using vendor supplied software packages correctly identified vapors with an accuracy of 70-90%. In-house software improvements increased the identification rates between 90 and 100%. Further software enhancements are under development. Details on the experimental setup, test protocols, and results on E-nose performance are presented in this paper along with special emphasis on specific software enhancements. c2003 Elsevier Science B.V. All rights reserved.
Document ID
20040087482
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Young, Rebecca C.
(NASA Kennedy Space Center Cocoa Beach FL United States)
Buttner, William J.
Linnell, Bruce R.
Ramesham, Rajeshuni
Date Acquired
August 21, 2013
Publication Date
August 1, 2003
Publication Information
Publication: Sensors and actuators. B, Chemical
Volume: 93
Issue: 1-3
ISSN: 0925-4005
Subject Category
Man/System Technology And Life Support
Distribution Limits
Public
Copyright
Other

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