DocumentCode
927884
Title
Armature options for hypervelocity railguns
Author
Thornhill, Lindsey D. ; Batteh, Jad H. ; Brown, Jere L.
Author_Institution
Sci. Application Int. Corp., Marietta, GA, USA
Volume
25
Issue
1
fYear
1989
fDate
1/1/1989 12:00:00 AM
Firstpage
552
Lastpage
557
Abstract
Models have been developed to study the effects of various performance-degrading mechanisms on the efficiency of railgun armatures. The models have been used to compare three armature options-plasma, hybrid, and transitioning-for the case of a 2.5-gm projectile accelerated to velocities of up to 15 km/s. Effects considered include armature parasitic mass, electrical resistance, viscous drag between the armature and bore, ablation drag due to ohmic and viscous dissipation, and for the hybrid armature, gap growth due to ablation of the solid conductor
Keywords
electromagnetic launchers; plasma guns; projectiles; ablation drag; armature parasitic mass; electrical resistance; hybrid armature; hypervelocity railguns; ohmic dissipation; performance-degrading mechanisms; plasma armature; projectile; railgun armatures; transitioning armature; viscous dissipation; viscous drag; Acceleration; Boring; Conductors; Drag; Heating; Plasma accelerators; Plasma properties; Projectiles; Railguns; Solids;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.22599
Filename
22599
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