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Analysis and Design of Phase Change Thermal Control for Light Emitting Diode (LED) Spacesuit Helmet LightsLED Helmet Extravehicular Activity Helmet Interchangeable Portable (LEHIP) lights for the Extravehicular Mobility Unit (EMU) have been built and tested and are currently being used on the International Space Station. A design is presented of the passive thermal control system consisting of a chamber filled with aluminum foam and wax. A thermal math model of LEHIP was built and correlated by test to show that the thermal design maintains electronic components within hot and cold limits for a 7 hour spacewalk in the most extreme EVA average environments, and do not pose a hazard to the crew or to components of the EMU.
Document ID
20100029676
Acquisition Source
Johnson Space Center
Document Type
Presentation
Authors
Bue, Grant C.
(NASA Johnson Space Center Houston, TX, United States)
Nguyen, Hiep X.
(NASA Johnson Space Center Houston, TX, United States)
Keller, John R.
(Jacobs Technologies Engineering Science Contract Group Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
August 16, 2010
Subject Category
Man/System Technology And Life Support
Report/Patent Number
JSC-CN-21295
Meeting Information
Meeting: Thermal and Fluids Analysis Workshop 2010
Location: Houston, TX
Country: United States
Start Date: August 16, 2010
End Date: August 20, 2010
Sponsors: NASA Headquarters
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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