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Proceedings Paper

Progress towards the remote sensing of aircraft icing hazards
Author(s): Andrew Reehorst; David Brinker; Marcia Politovich; David Serke; Charles Ryerson; Andrew Pazmany; Frederick Solheim
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Paper Abstract

NASA has teamed with the FAA, DoD, industry, and academia for research into the remote detection and measurement of atmospheric conditions leading to aircraft icing hazards. The ultimate goal of this effort is to provide pilots, controllers, and dispatchers sufficient information to allow aircraft to avoid or minimize their exposure to the hazards of in-flight icing. Since the hazard of in-flight icing is the outcome of aircraft flight through clouds containing supercooled liquid water and strongly influenced by the aircraft's speed and configuration and by the length of exposure, the hazard can't be directly detected, but must be inferred based upon the measurement of conducive atmospheric conditions. Therefore, icing hazard detection is accomplished through the detection and measurement of liquid water in regions of measured sub-freezing air temperatures. The icing environment is currently remotely measured from the ground with a system fusing radar, lidar, and multi-frequency microwave radiometer sensors. Based upon expected ice accretion severity for the measured environment, a resultant aircraft hazard is then calculated. Because of the power, size, weight, and view angle constraints of airborne platforms, the current ground-based solution is not applicable for flight. Two current airborne concepts are the use of either multi-frequency radiometers or multi-frequency radar. Both ground-based and airborne solutions are required for the future since ground-based systems can provide hazard detection for all aircraft in airport terminal regions while airborne systems will be needed to provide equipped aircraft with flight path coverage between terminal regions.

Paper Details

Date Published: 25 August 2008
PDF: 12 pages
Proc. SPIE 7088, Remote Sensing Applications for Aviation Weather Hazard Detection and Decision Support, 70880J (25 August 2008); doi: 10.1117/12.795154
Show Author Affiliations
Andrew Reehorst, NASA Glenn Research Ctr. (United States)
David Brinker, NASA Glenn Research Ctr. (United States)
Marcia Politovich, National Ctr. for Atmospheric Research (United States)
David Serke, National Ctr. for Atmospheric Research (United States)
Charles Ryerson, U.S. Army Cold Regions Research and Engineering Lab. (United States)
Andrew Pazmany, ProSensing, Inc. (United States)
Frederick Solheim, Radiometrics, Inc. (United States)

Published in SPIE Proceedings Vol. 7088:
Remote Sensing Applications for Aviation Weather Hazard Detection and Decision Support
Wayne F. Feltz; John J. Murray, Editor(s)

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