Railgun restrike control

Parker, Jerald V

Title: Railgun restrike control

Full Record
Other Related Research

Abstract

An electromagnetic railgun having electrically conductive segments overlying but insulated from the rails. Switches are connected between each segment and its underlying rail. As a projectile and its plasma armature pass each segment, the switch associated with that segment opens, disconnecting the flow of current into the area behind the plasma armature. Without a source of current, parasitic current flow is prevented.

Inventors:

Parker, Jerald V ^[1]

Los Alamos, NM

Issue Date:: 1990-01-01

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 867474

Patent Number(s):: 4945810

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F41 - WEAPONS F41B - WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE

Show more

F - MECHANICAL ENGINEERING F41 - WEAPONS F41B - WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE
F41B6/006 - {Rail launchers}

Show less

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: railgun; restrike; control; electromagnetic; electrically; conductive; segments; overlying; insulated; rails; switches; connected; segment; underlying; rail; projectile; plasma; armature; pass; switch; associated; disconnecting; flow; current; source; parasitic; prevented; parasitic current; electrically conductive; current flow; plasma armature; electromagnetic railgun; conductive segments; /89/124/318/

Citation Formats


                    Parker, Jerald V. Railgun restrike control.  United States: N. p., 1990. 
        Web.

Copy to clipboard


                    Parker, Jerald V. Railgun restrike control.  United States.

Copy to clipboard


                    Parker, Jerald V. Mon .  
        "Railgun restrike control".  United States.  https://www.osti.gov/servlets/purl/867474.

Copy to clipboard


                    
@article{osti_867474,

  title        = {Railgun restrike control},

  author       = {Parker, Jerald V},

  abstractNote = {An electromagnetic railgun having electrically conductive segments overlying but insulated from the rails. Switches are connected between each segment and its underlying rail. As a projectile and its plasma armature pass each segment, the switch associated with that segment opens, disconnecting the flow of current into the area behind the plasma armature. Without a source of current, parasitic current flow is prevented.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1990},

  month        = {1}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Omni-directional railguns

Patent Shahinpoor, Mohsen [9521 Avenida Del Oso NE., Albuquerque, NM 87111]

A device for electromagnetically accelerating projectiles. The invention features two parallel conducting circular plates, a plurality of electrode connections to both upper and lower plates, a support base, and a projectile magazine. A projectile is spring-loaded into a firing position concentrically located between the parallel plates. A voltage source is applied to the plates to cause current to flow in directions defined by selectable, discrete electrode connections on both upper and lower plates. Repulsive Lorentz forces are generated to eject the projectile in a 360 degree range of fire.
Full Text Available
Skirted projectiles for railguns

Patent Hawke, Ronald S [Livermore, CA]; Susoeff, Allan R [Pleasanton, CA]

A single skirt projectile (20) having an insulating skirt (22) at its rear, or a dual trailing skirt projectile (30, 40, 50, 60) having an insulating skirt (32, 42, 52, 62) succeeded by an arc extinguishing skirt (34, 44, 54, 64), is accelerated by a railgun accelerator 10 having a pair of parallel conducting rails (1a, 1b) which are separated by insulating wall spacers (11). The insulating skirt (22, 32, 42, 52, 62) includes a plasma channel (38). The arc extinguishing skirt (34, 44, 54, 64) interrupts the conduction that occurs in the insulating skirt channel (38) by blocking themore » « less
Full Text Available
Prevention of breakdown behind railgun projectiles

Patent Hawke, Ronald S [Livermore, CA]

An electromagnetic railgun accelerator system, for accelerating projectiles (14, 15, 114, 214, 314, 444) by a plasma arc (3), introduces a breakdown inhibiting gas into the railgun chamber (26) behind the accelerating projectile (14). 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 (12) after the projectile (14) has passed through inlets (16) in the rails (12) or the projectile (114); by coating the rails (12) or the projectile (15) with a material (28) which releases the gas after the projectile (14more » « less
Full Text Available
Prevention of breakdown behind railgun projectiles

Patent Hawke, Ronald S [Livermore, CA]

An electromagnetic railgun accelerator system, for accelerating projectiles (14, 15, 114, 214, 314, 414) by a plasma arc (3), introduces a breakdown inhibiting gas into the railgun chamber (26) behind the accelerating projectile (14). 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 (12) after the projectile (14) has passed through inlets (16) in the rails (12) or the projectile (114); by coating the rails (12) or the projectile (15) with a material (28) which releases the gas after the projectile (14)more » « less
Full Text Available
Overpulse railgun energy recovery circuit

Patent Honig, Emanuel M [Los Alamos, NM]

In an electromagnetic launcher such as a railgun for propelling a projectile at high velocity, an overpulse energy recovery circuit is employed to transfer stored inductive energy from a source inductor to the railgun inductance to propel the projectile down the railgun. Switching circuitry and an energy transfer capacitor are used to switch the energy back to the source inductor in readiness for a repetitive projectile propelling cycle.
Full Text Available

Similar Records