The study of sliding contact in railgun with metal armature

Author

Kondratenko, A.K. ; Bykov, M.A. ; Schastnykh, B.S. ; Glinov, A.P. ; Poltanov, A.E.

Author_Institution

Troitsk Inst. for Innovation & Fusion Res., Moscow, Russia

Volume

33

Issue

1

fYear

1997

fDate

1/1/1997 12:00:00 AM

Firstpage

576

Lastpage

581

Abstract

An experimental technique for the study of the current distribution in the rails and a moving metal armature is developed. The work was carried out on a special experimental railgun with a capacitor power supply. The set of small dB/dt probes as well as wire contact probes were arranged in close vicinity of the rail and armature contact surface. For interpretation of dB/dt measurements, a computation technique and program of restoration of current density distribution along the armature were developed. The size and the location of the current concentration zone in the contact area were obtained for several combinations of rail and armature materials; bronze and copper rails, Al and Ti alloy armature. Teats on a stationary armature with resistive stainless steel and graphite layers were also made to estimate the influence of the layer material resistivity on the current distribution

Keywords

current density; current distribution; electrical contacts; railguns; skin effect; Cu; CuSn; bronze; capacitor power supply; current concentration zone; current density distribution; current distribution; dB/dt probes; graphite layers; layer material resistivity; metal armature; railgun; resistive stainless steel; sliding contact; velocity skin effect reduction; wire contact probes; Armature; Current distribution; Current measurement; Density measurement; Power capacitors; Power supplies; Probes; Railguns; Rails; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.560077

Filename

560077