DocumentCode :
1349594
Title :
The use of currents induced within a conducting shield for railgun performance control
Author :
Galanin, M.P. ; Popov, Yu.P. ; Khramtsovsky, S.S. ; Plekhanov, A.V.
Author_Institution :
M.V. Keldysh Inst. of Appl. Math., Acad. of Sci., Moscow, Russia
Volume :
33
Issue :
1
fYear :
1997
fDate :
1/1/1997 12:00:00 AM
Firstpage :
544
Lastpage :
548
Abstract :
A conducting containment (shield) is an important part of an electromagnetic launcher and can ensure the rigidity of the whole construction. The electromagnetic fields, generated by a flowing current, are dissipated within the shield, with a resultant partial loss of energy. On the other hand the shield varies the inductance gradient and current form in the launcher circuit. The containment currents produce magnetic pressure on the rails´ exterior thus compensating the inner pressure. The problem is to neutralize the inner pressure on the rails without any considerable reduction in the inductance gradient. We have used method of numerical experiment for investigating the influence of physical containment characteristics upon the launch process. A three-dimensional model of a round bore railgun with a moving solid armature has been studied. Its construction allows the use of various materials with different qualities. The model predicts the disappearance of total radial force acting on the entire rail when the inductance gradient is reduced by 1.5-2.5 times
Keywords :
electromagnetic fields; electromagnetic shielding; railguns; conducting shield; current form; electromagnetic fields; flowing current; inductance gradient; inner pressure; magnetic pressure; physical containment characteristics; railgun performance control; round bore; solid armature; three-dimensional model; total radial force; Boring; Circuits; Electromagnetic fields; Electromagnetic launching; Electromagnetic shielding; Inductance; Magnetic shielding; Railguns; Rails; Solid modeling;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.560071
Filename :
560071
Link To Document :
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