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Abstract: Conventional ratcheting tools do not work efficiently in confined spaces and they have other limitations when used in space during extravehicular activity (EVA). The National Aeronautics and Space Administrations (NASA) Goddard Space Flight Center has developed a threedimensional (3-D) sprag/roller technology that has many benefits over the ratchet mechanism. The Space Systems Laboratory at the University of Maryland is using this technology in the development of EVA tools. The research... (Update)
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BibTeX entry: (Update)
@misc{ roberts-weightless,
author = "Brian J. Roberts and David L. Akin",
title = "Weightless Testing of a Ratchetless Extravehicular Activity Wrench",
url = "citeseer.ist.psu.edu/roberts99weightless.html" }
Citations (may not include all citations):79 and Human Supervisory Control (context) - Sheridan - 1992
2 Three-Dimensional Roller Locking Sprags (context) - Vranish - 1996
2 Invention disclosure submitted 9 September (context) - Vranish, Wade et al. - 1996
2 for International Space Station (context) - Acceptance, --- et al. - 1996
2 Safety and Mission Assurance Certification Approval Request (context) - Mission, Approval et al.
2 Three-Dimensional Roller Wrench and Human Performance Neutra.. (context) - Roberts - 1999
http://ednet.gsfc.nasa.gov/gsrp/
Documents on the same site (http://wrench.ssl.umd.edu/EVA/):
Development Of A Ratchetless Wrench For Extravehicular Activity - Roberts (Correct)
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