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Title: Prevention of breakdown behind railgun projectiles

Abstract

An electromagnetic railgun accelerator system, for accelerating projectiles by a plasma arc, introduces a breakdown inhibiting gas into the railgun chamber behind the accelerating projectile. The breakdown inhibiting gas, which absorbs electrons, is a halide or a halide compound such as fluorine or SF[sub 6]. The gas is introduced between the railgun rails after the projectile has passed through inlets in the rails or the projectile; by coating the rails or the projectile with a material which releases the gas after the projectile passes over it; by fabricating the rails or the projectile or insulators out of a material which releases the gas into the portions of the chamber through which the projectile has travelled. The projectile may have a cavity at its rear to control the release of ablation products. 12 figs.

Inventors:
Issue Date:
OSTI Identifier:
7049133
Patent Number(s):
5155290 A
Application Number:
PPN: US 7-783664
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-092460
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Patent File Date: 28 Oct 1991
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; RAILGUN ACCELERATORS; DESIGN; ABLATION; ARMATURES; FABRICATION; PROJECTILES; SULFUR FLUORIDES; ACCELERATORS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; SULFUR COMPOUNDS; 700411* - Inertial Confinement Devices- (1992-); 450000 - Military Technology, Weaponry, & National Defense

Citation Formats

Hawke, R.S. Prevention of breakdown behind railgun projectiles. United States: N. p., 1992. Web.
Hawke, R.S. Prevention of breakdown behind railgun projectiles. United States.
Hawke, R.S. Tue . "Prevention of breakdown behind railgun projectiles". United States.
@article{osti_7049133,
title = {Prevention of breakdown behind railgun projectiles},
author = {Hawke, R.S.},
abstractNote = {An electromagnetic railgun accelerator system, for accelerating projectiles by a plasma arc, introduces a breakdown inhibiting gas into the railgun chamber behind the accelerating projectile. The breakdown inhibiting gas, which absorbs electrons, is a halide or a halide compound such as fluorine or SF[sub 6]. The gas is introduced between the railgun rails after the projectile has passed through inlets in the rails or the projectile; by coating the rails or the projectile with a material which releases the gas after the projectile passes over it; by fabricating the rails or the projectile or insulators out of a material which releases the gas into the portions of the chamber through which the projectile has travelled. The projectile may have a cavity at its rear to control the release of ablation products. 12 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {10}
}