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Crew Performance in Extended Operation under Vibrational Stress.
TEXAS TECH UNIV LUBBOCK CENTER OF BIOTECHNOLOGY AND HUMAN PERFORMANCE
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The study was conducted in an attempt to investigate the effects of prolonged vibration on performance and recovery of different crews involved in the operation of a multi-station work system. Eight-, six-, and five-man crews were under investigation while operating a 4-station work system. The performance measure was a compensatory one-dimensional vertical tracking task. This task was performed under normal and vibrational environments. The simulated 4-station systems mission duration was taken as 4 hours, wherein performance data were collected. Crew recovery was monitored throughout a 20-minute period after mission completion. Two work cycles 60 minutes and 30 minutes were used in the different crews work schedules. The vibrational stress imparted to the crew memebers was a vertical sinusoidal type of 5 cps frequency, 0.16 inch constant amplitue DA, and 0.20 g acceleration intensity level. The significant conclusions drawn from this study are listed.
APPROVED FOR PUBLIC RELEASE