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The objective of this presentation has been to illustrate the effect of the zero-gravity or weightless environment on crewmembers and their performance and on the functioning of equipment.

The most important design and planning issues related to crewmember work efficiency include: proper consideration for space neutral body posture; generous provision of body and equipment restraints at appropriate location; work area architecture and panel design that provide efficient physical; and visual access and a layout that employs single reference frame for all panels within each work area.

The ultimate goal is to increase designer's and engineer's awareness of factors relevant to their work in support of space flight endeavors.