Accession Number : ADA192851

Title :   An Interferometric Measurement Technique for Railgun Structures.

Descriptive Note : Memorandum rept.,

Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Zielinski, Alex ; Kezerian, Jeffrey ; Beno, Joseph

PDF Url : ADA192851

Report Date : Jan 1988

Pagination or Media Count : 29

Abstract : A technique to measure the expansion of a railgun under conditions of high magnetic stress has been developed. Bore deflections are detected by a Michelson interferometer arrangement during the application of a current pulse which produced repulsive forces similar to those in an actual projectile launch. This technique has been successfully used with two different barrel set-ups whose rails were electrically connected outside the bore at the muzzle. The method should prove valuable for testing a wide variety of electromagnetic launcher structures owing to the small loading of the optics on the structure itself. Keywords: Interferometry; Bore expansion; Pulsed power; Railgun; Magnetic pressure; Electric gun.

Descriptors :   *DEFLECTION, *ELECTRIC GUNS, *EXPANSION, *GUN MUZZLES, *HYPERVELOCITY GUNS, *OPTICAL DETECTION, BORES, ELECTROMAGNETISM, INTERFEROMETRY, LAUNCHERS, LAUNCHING, MAGNETIC FORCES, MEASUREMENT, MICHELSON INTERFEROMETERS, OPTICS, POWER, PRESSURE, PROJECTILES, PULSES, RAILS, STRESSES, STRUCTURES, STRUCTURAL RESPONSE

Subject Categories : Guns
      Electricity and Magnetism
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE