Thermal Stress Imposed by Prototype Bilayer and Current Ground Crew Chemical Defense Ensembles. A Limited Laboratory Comparison
Final rept. 30 Jun 1986-1 Jan 1987
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX
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An open bilayer ground crew chemical defense ensemble CDE has been proposed to reduce the thermal burden during vapor-only exposure periods. This study compared the thermal stress profile of the proposed ensemble to that produced by the currently employed closed CDE. Four subjects, alternating ensembles on separate days, walked on a treadmill in an environmental chamber at 5.3 kmh 3.3 mph and 2 grade an energy expenditure of 350 kcalh for alternating workrest to achieve significant recovery. Mean total sweat production was lower 1.38 vs. 2.50 liters and percent sweat evaporation greater 65.7 vs. 30.0 in the prototype ensemble than in the CDE. The prototype ensemble provided greater heat dissipation and allowed more efficient sweat evaporation which had the double benefit of reducing heat storage and limiting dehydration. Chemical defense Thermal stress Ground crew chemical defense ensemble Open bilayer Chemical defense ensemble.
- Chemical, Biological and Radiological Warfare