Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1998-09-03
2000-07-18
Lee, Benjamin C.
Communications: electrical
Condition responsive indicating system
Specific condition
340581, 340583, 340584, 340600, 340602, 250573, 250574, 244134F, G08B 1902
Patent
active
060913355
ABSTRACT:
An optical device on board an aircraft for detecting icing conditions including an optical beam emitter to create at least one illuminated external volume of measurement through which there circulates a flow of air charged with water particles; a collector optical system for the collection of at least a part of the light beam back-scattered by the water particles (the external volume of measurement being located on the optical axis of said collector optical system); a photodetector for detecting back-scattered optical beams; a signal processor for processing the signal delivered by the photodetector to compute the severity of the icing conditions; an information provider for providing information on the calculated severity of the icing conditions. Advantageously, the optical means for the differentiation of device includes a differentiation for differentiating between liquid water particles and solid water particles, based on analysis of the polarization.
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J. F. Gayet, et al., "Industrial Measurement Of Microphysical Parameters--Application To Natural And Simulated Icing Clouds", L'Onde Electrique, 72(1992)Jan./Feb., No. 1, pp. 21-25.
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Breda Jean-Marc
Choisnet Joel
Naim Monique
Lee Benjamin C.
Sextant Avionique
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