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The Demonstration of a Light Extinction Tomography System at the NASA Glenn Research Center's Icing Research TunnelA prototype light extinction tomography system has been developed for acquiring real-time in-situ icing cloud uniformity and density measurements in the NASA Glenn Research Center's Icing Research Tunnel (IRT). These measurements are currently obtained through periodic manual calibrations of the IRT. These calibrations are time consuming and assume that cloud uniformity and density does not greatly vary between the periodic calibrations. It is envisioned that the new light extinction tomography system will provide the means to make these measurements in-situ in real-time and minimize the need for these manual calibrations. This new system uses the principle of light extinction tomography to measure the spray density and distribution in the test section. The prototype system was installed and successfully demonstrated in the Icing Research Tunnel in early 2018. Data sets were acquired for several standard spray and simulated fault conditions to assess system capability and sensitivity. This paper will describe the prototype light extinction system, the theory behind it, and the results of the demonstration test that was conducted in the IRT.
Document ID
Document Type
Woike, Mark R.
(NASA Glenn Research Center Cleveland, OH, United States)
Ponder, Jonathon D.
(NASA Glenn Research Center Cleveland, OH, United States)
Van Zante, Judith F.
(NASA Glenn Research Center Cleveland, OH, United States)
Bencic, Timothy J.
(HX5 Sierra, LLC Cleveland, OH, United States)
King-Steen, Laura
(HX5 Sierra, LLC Cleveland, OH, United States)
Timko, Emily N.
(Jacobs Engineering Group Cleveland, OH, United States)
Rohler, David P.
(Plexar Associates, Inc. Shaker Heights, OH, United States)
Izen, Steven H.
(Case Western Reserve Univ. Cleveland, OH, United States)
Date Acquired
August 19, 2019
Publication Date
June 17, 2019
Subject Category
Air Transportation And Safety
Report/Patent Number
Meeting Information
2019 American Institute of Aeronautics and Astronautics AVIATION Forum (AIAA)(Dallas, TX)
Funding Number(s)
WBS: 147016.
Distribution Limits
Public Use Permitted.
Technical Review
NASA Technical Management
Wind Tunnel
Test Facility
Icing Cloud
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