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    A High-Performance Hygrometer for Aircraft Use: Description, Installation, and Flight Data

    Source: Journal of Atmospheric and Oceanic Technology:;1994:;volume( 012 ):;issue: 001::page 73
    Author:
    Busen, Reinhold
    ,
    Buck, Arden L.
    DOI: 10.1175/1520-0426(1995)012<0073:AHPHFA>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A new cryogenic hygrometer designed for airborne research has been developed. It is based on the well-known chilled-mirror technique, but instead of the usual Peltier elements, liquid nitrogen is used for mirror cooling. The resultant greatly increased cooling capacity allows operation over a dewpoint and frost-point temperature range of ?90° to +30°C, with response times of a few seconds. The instrument has operated aboard the DLR Falcon aircraft for about 2 years. During stratospheric flights frost points down to ?80°C were measured, which at that altitude corresponded to mixing ratios below 10 ppmv. During its flights the Falcon encountered abrupt changes in humidity, data from which are shown. The hygrometer has also been flown in intercomparison flights with other aircraft carrying a variety of humidity instrumentation. The agreement with humidity data from other instruments aboard the Falcon in shown in detail. This paper describes the concept, technical details, and operating characteristics of the instrument. Its installation on the DLP Falcon is also described, and the results of its operation in both test and research programs are presented, along with flight data.
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      A High-Performance Hygrometer for Aircraft Use: Description, Installation, and Flight Data

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4145157
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    • Journal of Atmospheric and Oceanic Technology

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    contributor authorBusen, Reinhold
    contributor authorBuck, Arden L.
    date accessioned2017-06-09T13:58:12Z
    date available2017-06-09T13:58:12Z
    date copyright1995/02/01
    date issued1994
    identifier issn0739-0572
    identifier otherams-1008.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4145157
    description abstractA new cryogenic hygrometer designed for airborne research has been developed. It is based on the well-known chilled-mirror technique, but instead of the usual Peltier elements, liquid nitrogen is used for mirror cooling. The resultant greatly increased cooling capacity allows operation over a dewpoint and frost-point temperature range of ?90° to +30°C, with response times of a few seconds. The instrument has operated aboard the DLR Falcon aircraft for about 2 years. During stratospheric flights frost points down to ?80°C were measured, which at that altitude corresponded to mixing ratios below 10 ppmv. During its flights the Falcon encountered abrupt changes in humidity, data from which are shown. The hygrometer has also been flown in intercomparison flights with other aircraft carrying a variety of humidity instrumentation. The agreement with humidity data from other instruments aboard the Falcon in shown in detail. This paper describes the concept, technical details, and operating characteristics of the instrument. Its installation on the DLP Falcon is also described, and the results of its operation in both test and research programs are presented, along with flight data.
    publisherAmerican Meteorological Society
    titleA High-Performance Hygrometer for Aircraft Use: Description, Installation, and Flight Data
    typeJournal Paper
    journal volume12
    journal issue1
    journal titleJournal of Atmospheric and Oceanic Technology
    identifier doi10.1175/1520-0426(1995)012<0073:AHPHFA>2.0.CO;2
    journal fristpage73
    journal lastpage84
    treeJournal of Atmospheric and Oceanic Technology:;1994:;volume( 012 ):;issue: 001
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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