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    A Numerical Study of Fog Clearing by Helicopter Downwash

    Source: Journal of Applied Meteorology:;1975:;volume( 014 ):;issue: 007::page 1284
    Author:
    Johnson, David B.
    ,
    Barker, Edward H.
    ,
    Lowe, Paul R.
    DOI: 10.1175/1520-0450(1975)014<1284:ANSOFC>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A two-dimensional axially symmetric computer model was used to study downwash-induced fog clearings. In order to produce a clearing the helicopter downwash must reach the ground while the helicopter hovers at or above the top of the fog. The major factors affecting the size and penetration of the downwash are the strength of the helicopter and the buoyancy of the downwash. The clearing can be enlarged beyond the size of the primary downwash by surface-induced divergence and by mixing of dry air into the fog.
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      A Numerical Study of Fog Clearing by Helicopter Downwash

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4232398
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    • Journal of Applied Meteorology

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    contributor authorJohnson, David B.
    contributor authorBarker, Edward H.
    contributor authorLowe, Paul R.
    date accessioned2017-06-09T17:38:22Z
    date available2017-06-09T17:38:22Z
    date copyright1975/10/01
    date issued1975
    identifier issn0021-8952
    identifier otherams-8963.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4232398
    description abstractA two-dimensional axially symmetric computer model was used to study downwash-induced fog clearings. In order to produce a clearing the helicopter downwash must reach the ground while the helicopter hovers at or above the top of the fog. The major factors affecting the size and penetration of the downwash are the strength of the helicopter and the buoyancy of the downwash. The clearing can be enlarged beyond the size of the primary downwash by surface-induced divergence and by mixing of dry air into the fog.
    publisherAmerican Meteorological Society
    titleA Numerical Study of Fog Clearing by Helicopter Downwash
    typeJournal Paper
    journal volume14
    journal issue7
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1975)014<1284:ANSOFC>2.0.CO;2
    journal fristpage1284
    journal lastpage1292
    treeJournal of Applied Meteorology:;1975:;volume( 014 ):;issue: 007
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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