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The Total Hemispheric Emissivity of Painted Aluminum Honeycomb at Cryogenic TemperaturesNASA uses high-emissivity surfaces on deep-space radiators or thermal radiation absorbers in test chambers. Aluminum honeycomb core material, when coated with a high-emissivity paint, provides a lightweight, mechanically robust, and relatively inexpensive black surface that retains its high emissivity down to low temperatures. At temperatures below about 100 Kelvin, this material performs much better than the paint itself. We measured the total hemispheric emissivity of various painted honeycomb configurations using an adaptation of an innovative technique developed for characterizing thin black coatings. These measurements were performed from room temperature down to 30 Kelvin. We describe the measurement technique and compare the results with predictions from a detailed thermal model of each honeycomb configuration.
Document ID
20160010590
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Tuttle, J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Canavan, E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
DiPirro, M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Li, X.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Knollenberg, K.
(Northrop Grumman Aerospace Systems Redondo Beach, CA, United States)
Date Acquired
August 26, 2016
Publication Date
June 17, 2013
Subject Category
Composite Materials
Report/Patent Number
LEGNEW-OLDGSFC-PubID14946-1
Meeting Information
Meeting: 2013 Cryogenic Engineering Conference
Location: Anchorage, AK
Country: United States
Start Date: June 17, 2013
End Date: June 21, 2013
Sponsors: L'Air Liquide
Distribution Limits
Public
Copyright
Public Use Permitted.
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