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Multiple-Point Mass Flux Measurement System Using Rayleigh ScatteringA multiple-point Rayleigh scattering diagnostic is being developed to provide mass flux measurements in gas flows. Spectroscopic Rayleigh scattering is an established flow diagnostic that has the ability to provide simultaneous density, temperature, and velocity measurements. Rayleigh scattered light from a focused 18 Watt continuous-wave laser beam is directly imaged through a solid Fabry-Perot etalon onto a CCD detector which permits spectral analysis of the light. The spatial resolution of the measurements is governed by the locations of interference fringes, which can be changed by altering the etalon characteristics. A prototype system has been used to acquire data in a Mach 0.56 flow to demonstrate feasibility of using this system to provide mass flux measurements. Estimates of measurement uncertainty and recommendations for system improvements are presented
Document ID
Document Type
Conference Paper
Mielke, Amy F.
(NASA Glenn Research Center Cleveland, OH, United States)
Elam, Kristie A.
(Jacobs Sverdrup Technologies Cleveland, OH)
Clem, Michelle M.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
January 5, 2009
Subject Category
Report/Patent Number
AIAA Paper 2009-528
Meeting Information
47th AIAA Aerospace Sciences Meeting(Orlando, FL)
Funding Number(s)
WBS: WBS 599489.
Distribution Limits
Public Use Permitted.
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