THE EFFECT OF LUNAR GRAVITY ON MAN'S PERFORMANCE OF BASIC MAINTENANCE TASKS
Abstract
Nine subjects were trained extensively on three maintenance tasks: bolt torquing, connector mating, and nut threading. They were randomly distributed into one of three clothing conditions (shirt-sleeve, vented suit, and pressurized suit) and trained and tested on all three tasks in three gravity conditions (one gravity, one gravity in the harness, and one-sixth gravity). This study demonstrated that lunar gravity imposed a twenty-five-percent performance decrement over performance in one gravity (p < .01). The vented suit imposed a sixty-percent performance decrement (p < .01) and the pressurized suit imposed a 150-percent performance decrement (p < .01) when compared to performance in the shirt sleeve mode. On the basis of these findings and subjective reports, preliminary human factors design criteria were suggested for lunar gravity performance aids. The need for subsequent research in the areas of mission-specific maintenance tasks and candidate job aids to improve performance in the lunar environment was pointed out.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1967
- Accession Number
- AD0660457
Entities
People
- Joseph L. Seminara
- Richard J. Shavelson
Organizations
- Lockheed Martin Missiles and Space