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Modular liquid-cooled helmet liner for thermal comfortA modular liquid-cooled helmet liner made of eight form-fitting neoprene patches was constructed. The liner was integrated into the sweatband of an Army SPH-4 helicopter aircrew helmet. This assembly was tested on four subjects seated in a hot (47 C), humid (40%) environment. Results indicate a marked reduction in the rate of increase of physiological body functions. Rectal temperature, weight loss, heart rate, and strain indices are all reduced to approximately 50% of uncooled levels. The cooling liner removed from 10% to 30% of total metabolic heat produced. This study also demonstrated the technical feasilibity of using a cooling liner in conjunction with a standard hard helmet. Potential applications of the cooling liner in thermally stressful environments are numerous, notably for helicopter and other aircrews.
Document ID
19740060165
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Williams, B. A.
Shitzer, A.
(NASA Ames Research Center Biotechnology Div., Moffett Field, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
September 1, 1974
Publication Information
Publication: Aerospace Medicine
Volume: 45
Subject Category
Biotechnology
Accession Number
74A42915
Funding Number(s)
CONTRACT_GRANT: NAS2-6650
Distribution Limits
Public
Copyright
Other

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