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NASA NTRS · 20160012484

Vibrating-Wire, Supercooled Liquid Water Content Sensor Calibration and Characterization Progress

King, Michael C.·Bognar, John A.·Guest, Daniel·Bunt, Fred
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Abstract

NASA conducted a winter 2015 field campaign using weather balloons at the NASA Glenn Research Center to generate a validation database for the NASA Icing Remote Sensing System. The weather balloons carried a specialized, disposable, vibrating-wire sensor to determine supercooled liquid water content aloft. Significant progress has been made to calibrate and characterize these sensors. Calibration testing of the vibrating-wire sensors was carried out in a specially developed, low-speed, icing wind tunnel, and the results were analyzed. The sensor ice accretion behavior was also documented and analyzed. Finally, post-campaign evaluation of the balloon soundings revealed a gradual drift in the sensor data with increasing altitude. This behavior was analyzed and a method to correct for the drift in the data was developed.

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King, Michael C., Bognar, John A., Guest, Daniel, Bunt, Fred. 2016-10-01. Vibrating-Wire, Supercooled Liquid Water Content Sensor Calibration and Characterization Progress. https://ntrs.nasa.gov/citations/20160012484

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