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Doppler-Shifted Raman Spectroscopy Measures FlowsTechnique for measuring velocity, static pressure, and translational temperature of flowing molecules by use of stimulated Raman spectroscopy demonstrated in supersonic wind tunnel at NASA Langley Research Center. Nonintrusive, accurate wind-tunnel measurements obtained without seeding flows. Optical equipment for vibration-free Raman doppler velocimetry in wind tunnel includes specially designed retrometer that reduces sensitivity of system to vibrations. This capability very valuable in aerodynamic testing and proves useful in wide variety of laboratory, industrial, and engineering applications.
Document ID
19900000099
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Exton, Reginald J.
(NASA Langley Research Center, Hampton, VA.)
Hillard, Mervin E., Jr.
(NASA Langley Research Center, Hampton, VA.)
Lempert, Walter R.
(NASA Langley Research Center, Hampton, VA.)
Covell, Peter F.
(NASA Langley Research Center, Hampton, VA.)
Miller, David S.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 14, 2013
Publication Date
March 1, 1990
Publication Information
Publication: NASA Tech Briefs
Volume: 14
Issue: 3
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LAR-14133
Accession Number
90B10099
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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