Improving the Measurement Accuracy of Water Partial Pressure Using the Major Constituent Analyzer 2009-01-2432
The Major Constituent Analyzer (MCA) is a mass spectrometer based system that measures the major components of the International Space Station (ISS) atmosphere, including water. The measurement of water vapor has been difficult due to adsorption on various surfaces in the sample path, and has thus far been discounted in MCA atmosphere monitoring. This paper summarizes the results in identifying the primary source of the problem, the modeling being used to further elucidate the water surface adsorption/desorption process, and the proposed means available to provide a stable calibration and accurate measure of the water abundance.
Citation: Gardner, B., Erwin, P., Lee, W., Tissandier, A. et al., "Improving the Measurement Accuracy of Water Partial Pressure Using the Major Constituent Analyzer," SAE Int. J. Aerosp. 4(1):285-290, 2011, https://doi.org/10.4271/2009-01-2432. Download Citation
Author(s):
Ben D. Gardner, Phillip M. Erwin, Wai Tak Lee, Amber M. Tissandier, Souzan M. Thoresen
Affiliated:
Hamilton Sundstrand Space Systems International
Pages: 6
Event:
International Conference On Environmental Systems
ISSN:
1946-3855
e-ISSN:
1946-3901
Also in:
SAE International Journal of Aerospace-V120-1, SAE International Journal of Aerospace-V120-1EJ
Related Topics:
Spacecraft
Water
Pressure
Simulation and modeling
Calibration
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