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Electromagnetic and thermal performance validation of finned rails for EM launch

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3 Author(s)
Noel, A.P. ; IAP Res. Inc., Dayton, OH, USA ; Bauer, D. ; Hisle, R.E.

The design of fieldable electromagnetic launchers must carefully balance structural, thermal and electromagnetic performance in conjunction with suitable life. IAP Research has been developing a novel launcher concept in which the barrel is constructed from mostly metal materials. Analysts has indicated that the design has relatively high inductance gradient, combined with high passive thermal performance. This enhanced performance derives from the use of transverse copper laminations on the nonbore surfaces of each rail. These laminations induce more current flow on the bore surfaces and thus reduce the apparent thickness of the rails, increasing the bore magnetic field. At the same time, the rail fins absorb and quickly distribute the heat generated in the rail to outer portions of the gun for ambient air cooling. Subsequent experiments have validated the concept. This paper describes the study conducted by IAP Research and IAT to validate the performance of finned rail technology

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Magnetics, IEEE Transactions on  (Volume:37 ,  Issue: 1 )