The Effect of MOPP4 on M198 Howitzer Crew Performance. Volume 2. Task Times for Fire Missions

This work represents field measurements of task completion times for the crew of an M198 Howitzer. The M198 is a towed, 155mm artillery piece, manned by a 10-member US Marine crew for the exercise. Baseline times in battle dress uniform and degraded times in full nuclear and chemical protective gear...

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Bibliographic Details
Main Authors: McClellan, Gene E, Matheson, Leigh N, Deverill, Arthur P , Jr, Anno, George H, Barkely, Anthony J
Format: Report
Language:English
Subjects:
155-MM GUNS
BDU(BATTLE DRESS UNIFORM)
DEGRADATION
FIELD TESTS
Fire Control and Bombing Systems
GUN CREWS
HEAT STRESS(PHYSIOLOGY)
HOWITZERS
M-198 GUNS
METEOROLOGICAL DATA
MISSIONS
MOPP4(MISSION ORIENTED PROTECTIVE POSTURE LEVEL 4)
PERFORMANCE TESTS
PERFORMANCE(HUMAN)
Personnel Management and Labor Relations
Stress Physiology
TIME STUDIES
WUDH303390
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Summary:This work represents field measurements of task completion times for the crew of an M198 Howitzer. The M198 is a towed, 155mm artillery piece, manned by a 10-member US Marine crew for the exercise. Baseline times in battle dress uniform and degraded times in full nuclear and chemical protective gear (MOPP4) are included. Times are reported for 22 tasks composing a fire mission. Task performance is defined as the ratio of baseline task completion time to completion time with crewmembers in MOPP4. A regression of performance versus time in MOPP4 separates the performance degradation caused by the encumbrance of the MOPP gear from that caused by accumulating heat strain. Meteorological data and physiological data from the exercise are included in the report. 12 of 22 M198 tasks show significant degradation from encumbrance effects. 10 of 22 tasks show significant degradation with time in MOPP4. Degradation is correlated with demand ratings on human abilities of the tasks and with the number of crewmembers involved in a task. The measurements and analyses are part of an ongoing effort of DNA's NBC Consequence Assessment Program to support quantification of military performance degradation in an NBC environment. Prepared in cooperation with ARES Corp., Arlington, VA. Included with AD-M000 642. See also AD-A286 891