Thermal Stress Evaluation of the Mechanized Infantry Combat Vehicle (MICV-XM-723).

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Abstract:

Crew heat stress inside the Mechanized Infantry Combat Vehicle MICV-XM-723 was evaluated on seven subjects during operations in a summer desert environment. The projected buidup of internal humidity with occupant sweat did not reach the levels which would lead to heat intolerance within two to three hours. Although with a full crew i.e. 11 instead of 7 subjects, the internal humidity buildup might have been a bit higher, in essence, it would appear that subjects inside the vehicle will be at less thermal risk from heat stress than they would outside the vehicle, as long as the ventilation system is running and the vehicle is not overpressurized or tightly sealed against toxic agents. The observed WBGT levels, while quite stressful for active subjects unacclimatized to heat, would be reasonably well tolerated by well acclimatized subjects at the maximum levels of activity that could probably be attained while firing from within the vehicle. Author

Author(s):
Goldman, Ralph F. ; Winsmann, Fred R.
Author Organization(s):
ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MASS
Descriptive Note:
Technical rept.,
Pagination:
0024

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
USARIEM-T-41/76
Project Number(s):
DA-3-A-762758-A-827
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*COMBAT VEHICLES, *HEAT STRESS(PHYSIOLOGY), COMPUTERIZED SIMULATION, TEMPERATURE, PREDICTIONS, VENTILATION, HUMAN FACTORS ENGINEERING, CONFINEMENT(GENERAL), ARMORED PERSONNEL CARRIERS, HEART RATE, TANK CREWS, HUMIDITY, DESERT TESTS, RECTUM
Field(s)/Group(s):
Stress Physiology, Combat Vehicles
Keyword(s):
Mechanized infantry combat vehicle, Comfort
Report Date:
1976 May 01