Fujii MD, Greenisen M, Schneider V.
Aviat Space Environ Med. 1990 May; 61: 509.
Anthropometry and Biomechanics Laboratory, NASA-Johnson Space Center, Houston, TX 77058.
INTRODUCTION. During satellite deployment and/or recapture, an astronaut is required to grip a satellite and maneuver it in or out of the payload bay. An unknown force is transmitted to the space suit and foot restraints which may exceed current specifications. The purpose of this study was to evaluate the amount of force potentially transmitted to the suit through the astronaut's handgrip. METHODS. A simulation consisting of an instrumented piston with an attached handle measured the gloved, breakaway force. The breakaway force was recorded at the instant the hand opened as the piston accelerated away from the subject. Maximum isometric handgrip strength and peak breakaway force data were collected on 32 subjects from Code CB of JSC in 3 trials each. RESULTS. The peak and mean maximum isometric handgrip strengths of the male subjects were 141 lbf. and 119.04 +/- 11.13 lbf. and of the female subjects, these were 104 lbf. and 79.71 +/- 19.11 lbf. respectively. For the gloved, breakaway handgrip performances, the peak and mean values for the males were 264.4 lbf. and 220.2 +/- 21.3 lbf. and for the females, were 208.8 lbf. and 161.9 +/- 25.7 lbf. respectively. Correlations between the isometric handgrip strength and the gloved, breakaway strength were statistically significant. CONCLUSIONS. The peak and mean gloved, breakaway strength performances can be predicted using the peak or mean isometric handgrip strengths, facilitating the study of satellite manloads.
Publication Types:
Keywords:
- Biomedical Research
- Female
- Gloves, Protective
- Hand
- Hand Strength
- Humans
- Male
- Research Design
- Space Suits
- Weights and Measures
- methods
- organization & administration
- NASA Center JSC
- NASA Discipline Musculoskeletal
- NASA Discipline Number 00-00
- NASA Discipline Number 26-10
- NASA Program Flight
- NASA Program Space Physiology and Countermeasures
Other ID:
UI: 102212580
From Meeting Abstracts