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Simple Schlieren Light MeterSimple light-meter circuit used to position knife edge of schlieren optical system to block exactly half light. Enables operator to check quickly position of knife edge between tunnel runs to ascertain whether or not in alignment. Permanent measuring system made part of each schlieren system. If placed in unused area of image plane, or in monitoring beam from mirror knife edge, provides real-time assessment of alignment of schlieren system.
Document ID
19920000004
Document Type
Other - NASA Tech Brief
Authors
Rhodes, David B. (NASA Langley Research Center, Hampton, VA.)
Franke, John M. (NASA Langley Research Center, Hampton, VA.)
Jones, Stephen B. (NASA Langley Research Center, Hampton, VA.)
Leighty, Bradley D. (NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: NASA Tech Briefs
Volume: 16
Issue: 1
ISSN: 0145-319X
Subject Category
ELECTRONIC COMPONENTS AND CIRCUITS
Report/Patent Number
LAR-14249
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.