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Optimization of measurements with pressure sensitive paintsUse of luminescent paints for the measurement of global pressures on wind tunnel model surfaces requires a full understanding of the inherent accuracy of the technique. Theoretical emission of the paint luminophor follows the well known Stern-Volmer relation. Inherent in this relation are fundamental limits to achievable sensitivity and accuracy. Equations for relative error in pressure as a function of relative signal intensity (emittance), relative error in pressure as a function of pressure, and the relationship between sensitivity and pressure are derived and represented graphically.
Document ID
19950021494
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Oglesby, Donald M. (Old Dominion Univ. Norfolk, VA., United States)
Puram, Chith K. (Vigyan Research Associates, Inc. Hampton, VA., United States)
Upchurch, Billy T. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1995
Subject Category
Instrumentation And Photography
Report/Patent Number
NAS 1.15:4695
NASA-TM-4695
L-17474
Accession Number
95N27915
Funding Number(s)
PROJECT: RTOP 505-59-54-02
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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