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Improved Large-Field Focusing Schlieren SystemSystem used to examine complicated two- and three-dimensional flows. High-brightness large-field focusing schlieren system incorporates Fresnel lens instead of glass diffuser. In system with large field of view, image may also be very large. Relay optical subsystem minifies large image while retaining all of light. Facilities candidates for use of focusing schlieren include low-speed wind and water tunnels. Heated or cooled flow tracers or injected low- or high-density tracers used to make flows visible for photographic recording.
Document ID
19930000765
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Weinstein, Leonard M.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 16, 2013
Publication Date
December 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 12
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
LAR-14601
Accession Number
93B10765
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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