Tuesday, April 13, 2010

Application of Spacesuit Glove Requirements Tools to Athletic and Personal Protective Equipment

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100011073_2010011530.pdf


England, Scott; Benson, Elizabeth; Melsoh, Miranda; Thompson, Shelby; Rajulu, Sudhakar; [2010]; 3 pp.

Despite decades of ongoing improvement, astronauts must still struggle with inhibited dexterity and accelerated fatigue due to the requirement of wearing a pressurized Extra-Vehicular Activity (EVA) glove. Recent research in the Anthropometry and Biomechanics Facility at NASA’s Johnson Space Center has focused on developing requirements for improvements in
the design of the next generation of EVA glove. In the course of this research, it was decided to expand the scope of the testing to include a variety of commercially available athletic and consumer gloves to help provide a more recognizable comparison for investigators and designers to evaluate the current state of EVA glove mobility and strength. This comparison is being
provided with the hope that innovative methods may help commercial development of gloves for various athletic and personal protective endeavors.
Author
Gloves; Mobility; Hand (Anatomy)

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A Comparative Analysis Between the Navy StandardWorkweek and the ActualWork/Rest Patterns of Sailors Aboard

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA514116&Location=U2&doc=GetTRDoc.pdf

Green, Kim Y; Dec 2009; 118 pp.; In English; Original contains color illustrations (Thesis)

Crew fatigue is a major factor in mishaps aboard ships. Despite empirical evidence that fewer personnel and longer working hours are primary factors of crew fatigue, U.S. Navy budgeting constraints and increased automation on ships has resulted in reduced manning onboard Navy vessels. This study expands research by Haynes (2007) and Mason (2009) comparing the Navy Standard Workweek (NSWW) Model to Sailors’ self-reported activities onboard U.S. Navy destroyers and cruisers. Research by both Haynes (2007) and Mason (2009) showed that a majority of Sailors worked longer hours and received less sleep than allotted in the NSWW model. The objective of this study was to determine if similar patterns would exist onboard U.S. Navy frigates. Results indicated that 61 % of the participants exceeded the 81 hours of Available Time (work) allotted by the NSWW. On average, Sailors in this current study, excluding officers, worked 20.24 hours more per week than in the NSWW, while sleeping 8.98 fewer hours per week than in the NSWW. Results suggest that the NSWW does not accurately reflect Sailors’ work/rest patterns onboard ships.

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Thursday, April 08, 2010

Introduction of Glass Cockpit Avionics into Light Aircraft

http://www.ntsb.gov/publictn/2010/SS1001.pdf

National Transportation Safety Board. Safety Study NTSB/SS-01/10 PB2010-917001

In a span of only a few years, the cockpits of new light aircraft have undergone a transition from conventional analog flight instruments to digital-based electronic displays commonly referred to as "glass cockpits". These new displays integrate aircraft control, autopilot, communication, navigation, and aircraft system monitoring functions, applying technology previously available only in transport-category aircraft. The enhanced function and information capabilities of glass cockpits represent a significant change and potential improvement in the way general aviation pilots monitor information needed to control their aircraft. The National Transportation Safety Board (NTSB) initiated this study to determine if the transition to glass cockpits in light aircraft has improved the safety records of those aircraft.

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