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Fiber Optic Raman Sensor to Monitor Concentration Ratio of Nitrogen and Oxygen in a Cryogenic MixtureA spontaneous Raman scattering optical fiber sensor is developed for a specific need of NASA/SSC for long-term detection and monitoring of the quality of liquid oxygen (LOX) in the delivery line during ground testing of rocket engines. The sensor performance was tested in the laboratory and with different excitation light sources. To evaluate the sensor performance with different excitation light sources for the LOX quality application, we have used the various mixtures of liquid oxygen and liquid nitrogen as samples. The study of the sensor performance shows that this sensor offers a great deal of flexibility and provides a cost effective solution for the application. However, an improved system response time is needed for the real-time, quantitative monitoring of the quality of cryogenic fluids in harsh environment.
Document ID
20070003556
Acquisition Source
Stennis Space Center
Document Type
Conference Paper
Authors
Tiwari, Vidhu S. (Mississippi State Univ. Starkville, MS, United States)
Kalluru, Rajamohan R. (Mississippi Ethanol, LLC Winona, MS, United States)
Yueh, Fang-Yu (Mississippi State Univ. Starkville, MS, United States)
Singh, Jagdish P. (Mississippi State Univ. Starkville, MS, United States)
SaintCyr, William (NASA Stennis Space Center Stennis Space Center, MS, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2007
Subject Category
Optics
Report/Patent Number
SSTI-2200-0079-FLUIDS
Funding Number(s)
CONTRACT_GRANT: NNS04AA34C
Distribution Limits
Public
Copyright
Public Use Permitted.

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