NDLI: Thermal management and resistive rail heating of a large-scale naval electromagnetic launcher

Content Provider	IEEE Xplore Digital Library
Author	Smith, A.N. Ellis, R.L. Bernardes, J.S. Zielinski, A.E.
Copyright Year	1965
Abstract	This work presents a model that can be implemented to quickly estimate the resistive heating and the resulting transient temperature response. Quantifying the energy deposited in the rails and implementing an effective thermal management system will be key elements of an effective design for a large-scale electromagnetic launcher. The total current was divided between the inside, upper/lower, and outside surface based on the results of a current distribution calculation. The diffusion of the magnetic field into each surface was modeled in order to determine the current distribution and the resistive heating. Cooling between shots was taken into account by solving the one dimensional transient heat diffusion equation within each surface. Repeating these calculations for a number of discrete segments down the length of the rail enabled the prediction of the total resistive rail heating and the temperature profile along the length of the rail. Experimental tests were conducted that verify the presence of localized heating in the corners of a U-shaped conductor made of 7075 Aluminum. Taking into account the localized resistive heating near the surface of the conductor will become increasingly important with large-scale guns.
Sponsorship	IEEE Magnetics Society
Starting Page	235
Ending Page	240
Page Count	6
File Size	239960
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermal management Thermal resistance Rails Electromagnetic heating Large-scale systems Electromagnetic launching Temperature Current distribution Conductors Electromagnetic transients thermal management Electromagnetic railgun resistive heating
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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