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Article

Thermal Design of an Airborne Computer Chassis With Air-Cooled, Cast Pin Fin Coldwalls

[+] Author and Article Information
Donald C. Price

Raytheon Co., McKinney, Texas, 75071e-mail: dprice@raytheon.com

B. Elliott Short

Raytheon Co., McKinney, Texas, 75071e-mail: eshort@raytheon.com

J. Heat Transfer 127(1), 11-17 (Feb 15, 2005) (7 pages) doi:10.1115/1.1839583 History: Received April 30, 2004; Revised August 13, 2004; Online February 15, 2005
Copyright © 2005 by ASME
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References

Figures

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Photograph of air-cooled computer chassis
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Exploded view of air-cooled computer chassis showing inlet air plenum, PWB card guides, and pin fin coldwalls
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Drawing of pin fin coldwall configuration indicating pin height and pin spacings
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System response curves for two candidate pin fin coldwall cores superimposed on fan performance curves showing fan operating points as a function of altitude
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Finite-element model of computer chassis including top and bottom coldwalls and PWB card slots
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Color contour plot of finite-element model of computer chassis using pin fin core #2 evaluated at sea level flight altitude
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Color contour plot of model of front side of typical PWB in computer chassis using pin fin coldwall #2 evaluated at sea level flight altitude
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Color contour plot of model of back side of typical PWB in computer chassis using pin fin coldwall #2 evaluated at sea level flight altitude
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Schematic showing thermal management concept for air-cooled electronics located in bays #1 and #2
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Transparent skin, isometric view of bay #5 showing ECS and ram air inlet with diffuser
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Isometric view of bays #1 and #2 from both the starboard side and port side of the pod showing location of antenna and electronic boxes
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Full length side view of electronics pod indicating five different bays

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