NDLI: Novel Study of the Rail’s Geometry in the Electromagnetic Launcher

Content Provider	IEEE Xplore Digital Library
Author	Bayati, M.S. Keshtkar, A.
Copyright Year	1973
Abstract	This paper proposed a railgun with sector of circular rails. The center of the sector of circular rails is located at the outside of the railgun bore. The distance between the sectors of two circles is s , opening angle facing outward θ, the inner and outer radius are also assumed to be R_i and R_o, respectively. The influence of internal curvature of the rails, the rail thickness and the distance between rails on the current density, magnetic flux density, and inductance gradient (L') have been studied and analyzed using finite-element method. First of all, the different values of θ, s, R_i, and R_o are calculated for various values of the area of the railgun bore (S_C) and cross section of the rails (S_R). The current density, magnetic flux density, and L' have been calculated for different values. The area of the railgun bore is assumed to be 9 and 10 cm² and the area of rails are assumed to be 9, 6, 3, and 1 cm². In next section, L' is found as a function of s, R_i, and R_o for θ =90°, 120°, 150°, and 180°. Finally, L' is compute for rail thickness equals to one-tenth of bore size and θ on the interval [180°, 360°]. According to the achieved results it can be observed the behavior of L' in terms of railgun dimensions changes and it is compared with other geometries.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1652
Ending Page	1656
Page Count	5
File Size	2007251
File Format	PDF
ISSN	00933813
Volume Number	43
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rails Railguns Current density Inductance Finite element analysis Geometry Electromagnetics railgun. Circular rail current distribution finite-element method (FEM) inductance gradient railgun
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Study of the Current Distribution, Magnetic Field, and Inductance Gradient of Rectangular and Circular Railguns

Effect of rail dimension on current distribution and inductance gradient

Transition Study of Current Distribution and Maximum Current Density in Railgun by 3-D FEM–IEM

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