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Honeycomb thermal shield studyA honeycomb thermal shield is described which is an economical and reliable alternative to existing thermal shielding methods for reducing the radiated heat loss from elements which will not allow obstructions in the field of view. The device is simply open-face honeycomb of the type used throughout the aerospace industry for structural panels. The honeycomb thermal shield uses only the core of the honeycomb panel, so it has little structural stiffness and is transparent through the cells. It is located in close proximity to, but conductively decoupled from, the element to be shielded (the radiative source) with the axis of the honeycomb cells parallel to the view direction of the source. The source radiates into a 2pi steradian field occupied by the shield. The view field will be transparent along the axis of the honeycomb but will be increasingly obscured as the off-normal view angle increases. The angular dependence is a function of the cell height to width ratio.
Document ID
19750022407
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Dombroski, R. M. (Wisconsin Univ. Madison, WI, United States)
Date Acquired
September 3, 2013
Publication Date
February 7, 1975
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-CR-144671
Accession Number
75N30480
Funding Number(s)
CONTRACT_GRANT: NAS5-20068
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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