Railgun research paper

Basics[ edit ] In its simplest and most commonly used form, the railgun differs from a traditional electric motor [7] in that no use is made of additional field windings or permanent magnets. This basic configuration is formed by a single loop of current and thus requires high currents e. A relatively common variant of this configuration is the augmented railgun in which the driving current is channelled through additional pairs of parallel conductors, arranged to increase "augment" the magnetic field experienced by the moving armature. In electric motor terminology, augmented railguns are usually series-wound configurations.

Railgun research paper

Railgun research paper

Basics[ edit ] In its simplest and most commonly used form, the railgun differs from a traditional electric motor [7] in that no use is made of additional field windings or permanent magnets. This basic configuration is formed by a single Railgun research paper of current and thus requires high currents e.

A relatively common variant of this configuration is the augmented railgun in which the driving current is channelled through additional pairs of parallel conductors, arranged to increase "augment" the magnetic field experienced by the moving armature.

In electric motor terminology, augmented railguns are usually series-wound configurations. Some railguns also use strong Neodymium magnets with the field perpendicular to the current flow to increase the force on the projectile.

The armature may be an integral part of the projectile, but it may also be configured to accelerate a separate, electrically isolated or non-conducting projectile. Solid, metallic sliding conductors are often the preferred form of railgun armature but "plasma" or "hybrid" armatures can also be used.

A hybrid armature uses a pair of " plasma " contacts to interface a metallic armature to the gun rails. Solid armatures may also "transition" into hybrid armatures, typically after a particular velocity threshold is exceeded.

A railgun requires a pulsed DC power supply. Increased muzzle velocities with better aerodynamically streamlined projectiles can convey the benefits of increased firing ranges while, in terms of target effects, increased terminal velocities can allow the use of kinetic energy rounds incorporating hit-to-kill guidance, as replacements for explosive shells.

As the magnetic field strengths required for such launches will typically be approximately 10 tesla kilogaussmost contemporary railgun designs are effectively "air-cored", i.

Railgun research paper

This automatically increases the force. Railgun velocities generally fall within the range of those achievable by two-stage light-gas guns ; however, the latter are generally only considered to be suitable for laboratory use, while railguns are judged to offer some potential prospects for development as military weapons.

In some hypervelocity research projects, projectiles are "pre-injected" into railguns, to avoid the need for a standing start, and both two-stage light-gas guns and conventional powder guns have been used for this role. In principle, if railgun power supply technology can be developed to provide safe, compact, reliable, combat survivable, and lightweight units, then the total system volume and mass needed to accommodate such a power supply and its primary fuel can become less than the required total volume and mass for a mission equivalent quantity of conventional propellants and explosive ammunition.

Arguably such technology has been matured with the introduction of the Electromagnetic Aircraft Launch System EMALS albeit that railguns require much higher system powers, because roughly similar energies must be delivered in a few milliseconds, as opposed to a few seconds.

Such a development would then convey a further military advantage in that the elimination of explosives from any military weapons platform will decrease its vulnerability to enemy fire.

History[ edit ] German railgun diagrams The earliest electromagnetic gun developed was the coil gun. Its development reportedly started in He filed for a US patent on 1 Aprilwhich was issued in July as patent no.

By passing current through busbars and projectile, a force is induced which propels the projectile along the bus-bars and into flight.

The guns were to be mounted in batteries of six firing twelve rounds per minute, and it was to fit existing It was never built. When details were discovered after the war it aroused much interest and a more detailed study was done, culminating with a report which concluded that it was theoretically feasible, but that each gun would need enough power to illuminate half of Chicago.

It was the first time in history that such levels of performance were reached. An earlier railgun of the same design megajoules resides at the Dundrennan Weapons Testing Centre in the United Kingdom. Several amateurs actively carry out research on railguns; examples can be found on YouTube.

At one end, these rails are connected to an electrical power supply, to form the breech end of the gun."The Electromagnetic Railgun is among several disruptive capabilities that the Naval Research Enterprise is championing to ensure a dominant, capable and relevant naval force for the future.".

The purpose of the present paper is to suggest some design features which may give some alternate approaches to railgun design. These may have both advantages and disadvantages in .

Limits of rail gun performance have been evaluated by Hawke et al. and velocities up to 10 km/s have been obtained for 3 gm projectiles in a m long rail gun Railgun research paper - Essays & dissertations written by high class writers. Order the required report here and forget about your concerns Let professionals deliver their responsibilities: receive the needed assignment here and wait for the highest score.

"The Electromagnetic Railgun is among several disruptive capabilities that the Naval Research Enterprise is championing to ensure a dominant, capable and relevant naval force for the future.".

The railgun is unique from other guns or cannons in that no chemical combustion is necessary to fire the projectile. railguns were suddenly a topic of heavy research and heavier funding from the .

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