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contributor authorPolitovich, Marcia K.
date accessioned2017-06-09T14:02:48Z
date available2017-06-09T14:02:48Z
date copyright1989/09/01
date issued1989
identifier issn0894-8763
identifier otherams-11478.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4146710
description abstractThe characteristic of aircraft icing environments containing large supercooled droplets are described. Substantial loss in rate of climb capability can result from less than 10 minutes duration in conditions where fewer than 0.1?1 cm?3 of droplets 30?400 ?m in diameter are present. These conditions are found to have a greater effect than those where the liquid water was confined to smaller (generally less than about 30 ?m diameter) droplets. Measurements from research aircraft flying in regions containing these large droplets, located in the Sierra Nevada in California, near Amarillo, Texas, and in northern Arizona are presented. Temperatures ranged from ?5.5° to ?9.4°C in 13 regions. The sizes of the droplets responsible for performance loss varied with each encounter but ranged from tens to hundreds of micrometers, and these were accompanied by few to no ice crystals. Two case studies are examined in further detail, including the weather conditions present at the time of the encounters. The meteorological situations leading to formation of these large droplets provide suitable environments for coalescence growth, or for prolonged depositional growth, and include weak atmospheric instability, warm (temperatures greater than about ?15°C) cloud tops, and sufficient moisture.
publisherAmerican Meteorological Society
titleAircraft Icing Caused by Large Supercooled Droplets
typeJournal Paper
journal volume28
journal issue9
journal titleJournal of Applied Meteorology
identifier doi10.1175/1520-0450(1989)028<0856:AICBLS>2.0.CO;2
journal fristpage856
journal lastpage868
treeJournal of Applied Meteorology:;1989:;volume( 028 ):;issue: 009
contenttypeFulltext


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