EVA Hand Tool Design Considerations, Development, and General Requirements Interpretation: A Junior Engineer’s Guide

This paper serves as a guide to developing hand tools for use by crewmembers during extravehicular activity (EVA) in outer space. It outlines the fundamentals of EVAs and related provisions, providing a starting point and perspective for engineers unfamiliar with designing equipment to be used during manned spaceflight. Common EVA hardware constraints, which are often unclear, are interpreted and traced back to a source or justification because, as in any design field, fully understanding the basis and intent of a design requirement is needed to properly satisfy it. Lastly, miscellaneous design considerations and lessons learned in tool development are discussed. The information found within is drawn from commonly cited NASA and EVA related documents as well as from professional experiences.