Accession Number : AD0729373

Title :   Crew Performance in Extended Operation under Vibrational Stress.

Descriptive Note : Doctoral thesis,

Corporate Author : TEXAS TECH UNIV LUBBOCK CENTER OF BIOTECHNOLOGY AND HUMAN PERFORMANCE

Personal Author(s) : El-Nawawi,Mohamed A.

Report Date : AUG 1971

Pagination or Media Count : 234

Abstract : 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 system's 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.

Descriptors :   (*STRESS(PHYSIOLOGY), *VIBRATION), PERFORMANCE(HUMAN), MOTION SICKNESS, PHYSIOLOGY, ACCELERATION, TOLERANCES(PHYSIOLOGY), VISUAL ACUITY, ATTENTION, PSYCHOPHYSIOLOGY, THESES

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE