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Liquid water content measurements using the Phase Doppler Particle Analyzer in the NASA Lewis Icing Research TunnelThe performance of a Phase Doppler Particle Analyzer (PDPA) based icing probe suitable for use in icing tunnels and airborne applications is assessed. The instrument is shown to accurately and repeatably measure liquid water content (LWC) to within better than 20 percent of the nominal expected value in the NASA Lewis IRT. This was seen to be true over a wide range of tunnel operating conditions. The principles used by the PDPA for MVD and LWC determination are discussed. Calibration curves for the IRT median volume diameter are also determined and compared to the existing calibration determined via the PMS instruments. As has been shown in previous work, the PDPA is quite repeatable. The results are typically 3 to 5 microns smaller than the existing calibrations for a given run condition. Reasons for these differences are also discussed.
Document ID
19930039701
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rudoff, R. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Bachalo, E. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Bachalo, W. D.
(Aerometrics, Inc. Sunnyvale, CA, United States)
Oldenburg, J. R.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Subject Category
Research And Support Facilities (Air)
Report/Patent Number
AIAA PAPER 93-0298
Meeting Information
Meeting: AIAA, Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 11, 1993
End Date: January 14, 1993
Sponsors: AIAA
Accession Number
93A23698
Funding Number(s)
CONTRACT_GRANT: NAS3-25653
Distribution Limits
Public
Copyright
Other

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