Naval electric weapons the electromagnetic railgun and free electron laser
Williams, Robert E.
Colson, William B.
Armstead, Robert L.
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Theory and simulations of the railgun and free electron laser are presented, as well as a suggestion for extending the railgun lifecycle. The theory, design, and analysis of an electromagnetic railgun using a numerical model are discussed. The effects of varying electrical pulse formations, rail materials and geometries are explored. The application of a metallurgical process to mitigate hypervelocity gouging in railgun rails is proposed. This concept, to delay the onset velocity of gouging by laser-peening rails surfaces, may significantly increase the velocity at which projectiles acceptably traverse the barrel and extend the useful life of rails. If successful, this process would apply to any pair of materials in sliding contact at high relative velocity, including rocket sled tracks and light gas guns barrels. The status of proof-of-concept tests at LLNL, UC Davis, and UT is covered. FEL simulations investigating the effect that electron beam focal point variations have on the optical mode within the undulator are presented.
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Feliciano, Allan S. (Monterey, California. Naval Postgraduate School, 2001-12);A naval electromagnetic railgun would be a considerable asset against a littoral environment. By accelerating projectiles to 3 km/s, a naval railgun would be capable of reaching 300-400 nautical miles. Problems such as ...
Hartke, John P. (Monterey, California. Naval Postgraduate School, 1997-12);In the near future armored vehicles will be fielded with reactive armor which can not be defeated by today's chemically propelled munitions. Today's munitions are limited to muzzle velocities less than the speed of sound ...
Brady, James A. (Monterey, California. Naval Postgraduate School, 2005-12);In order for railgun technology to be relevant to the Infantry, the design of the projectile must incorporate the following three concepts: an effective ballistics package, geometries for aerodynamic stability; and a ...