Browse Publications Technical Papers 2007-01-2473

Mark III Space Suit Mobility: A Reach Evaluation Case Study 2007-01-2473

A preliminary assessment of the reach envelope and field of vision (FOV) for a subject wearing a Mark III space suit was requested for use in human-machine interface design of the Science Crew Operations and Utility Testbed (SCOUT) vehicle.
The reach and view of two suited and unsuited subjects were evaluated while seated in the vehicle using 3-dimensional position data collected during a series of reaching motions. Data was interpolated and displayed in orthogonal views and cross-sections.
Compared with unsuited conditions, medio-lateral reach was not strongly affected by the Mark III suit, whereas vertical and antero-posterior reach were inhibited by the suit. Lateral FOV was reduced by approximately 40° in the suit.
The techniques used in this case study may prove useful in human-machine interface design by providing a new means of developing and displaying reach envelopes.


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