Accession Number : AD0639059

Title :   A TECHNIQUE TO INVESTIGATE SPACE MAINTENANCE TASKS.

Descriptive Note : Joint NASA/USAF Study.

Corporate Author : AEROSPACE MEDICAL RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Mueller,Donald D. ; Seeman,Jerome S. ; Smith,Francis H.

Report Date : APR 1966

Pagination or Media Count : 16

Abstract : A series of preliminary studies was performed to determine if a high-fidelity ground-based simulation of zero gravity is necessary to obtain valid information about zero-G maintenance performance. Removal and replacement of a prestart solenoid valve on a rocket engine was selected as the basic maintenance task to be studied. Time scores for laboratory performance of the task were compared with scores obtained from subjects operating on the task during periods of transient weightlessness in a KC-135 aircraft. Modified hand tools, a tool box, and a worker tethering system were developed for use in the experiment. Major conclusions were (1) the factor contributing most to performance decrement in space maintenance was space suit pressurization level; (2) in this study, the effect of weightlessness on performance was less than the effect of suit pressure level, and, in this instance, it would not have been necessary to introduce zero-G conditions to conduct a meaningful study of space maintenance performance. (Author)

Descriptors :   (*SPACE MAINTENANCE, PERFORMANCE(HUMAN)), PRESSURE SUITS, PERFORMANCE(HUMAN), WEIGHTLESSNESS, PSYCHOMOTOR TESTS, GRAVITY(ARTIFICIAL), SPACE SIMULATION CHAMBERS, TEST EQUIPMENT, TEST METHODS

Subject Categories : Stress Physiology
      Test Facilities, Equipment and Methods
      Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE