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Apparatus Translates Crossed-Laser-Beam Probe VolumeOptomechanical apparatus translates probe volume of crossed-beam laser velocimeter or similar instrument while maintaining optical alignment of beams. Measures velocity, pressure, and temperature of flowing gas at several locations. Repeated tedious realignments no longer necessary. Designed to accommodate stimulated-Raman-gain spectrometer for noninvasive measurement of local conditions in flowing gas in supersonic wind tunnel. Applicable to other techniques like coherent anti-Stokes Raman spectroscopy involving use of laser beams crossed at small angles (10 degrees or less).
Document ID
19940000012
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Herring, Gregory C. (NASA Langley Research Center, Hampton, VA.)
South, Bruce W. (NASA Langley Research Center, Hampton, VA.)
Exton, Reginald J. (NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: NASA Tech Briefs
Volume: 18
Issue: 1
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LAR-14833
Accession Number
94B10012
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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