Experimental study of solid armatures for EML applications

Author

Lehmann, Pascale ; Peter, Hilmar ; Wey, Joseph

Author_Institution

French-German Res. Inst. of Saint-Louis, France

Volume

29

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

848

Lastpage

852

Abstract

Capacitor-driven railgun test facilities of 150 kJ and 500 kJ with a 15-mm round bore were used to study the behavior of solid armatures. The parameters investigated include projectile design and material testing. It was found that the appropriate projectile design and material choice makes it possible to inject the current at the front side of the projectile and to distribute the current over the whole armature. The electrical resistance of the solid armature can be as low as a few tens of μΩ, and the rail erosion is significantly lowered compared to the plasma armature tests. The authors also present an acceleration calculation based on current measurements; for a current of 600 kA the acceleration value is about 2×10⁶ m/s²

Keywords

electromagnetic launchers; projectiles; 15 mm; 150 kJ; 500 kJ; 60 kA; acceleration; capacitor-driven railguns; electrical resistance; material testing; projectile design; rail erosion; railgun test facilities; round bore; solid armatures; Acceleration; Accelerometers; Boring; Electric resistance; Materials testing; Projectiles; Railguns; Rails; Solids; Test facilities;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.195687

Filename

195687