Accession Number : ADA320751

Title :   Computer Simulations of the Electrothermal Behavior of Armatures During Electromagnetic Launch. Part 3: Miscellaneous 2-D Simulation Results.

Descriptive Note : Final rept.,

Corporate Author : PRINS MAURITS LABORATORIUM TNO RIJSWIJK (NETHERLANDS)

Personal Author(s) : Schoolderman, A. J.

PDF Url : ADA320751

Report Date : NOV 1996

Pagination or Media Count : 45

Abstract : Recent results of simulations of the electromagnetic acceleration process with the 2-dimensional electrothermal finite element computer code ET-code are presented and three extensions of the code, the muzzle voltage calculation, the melt-wave model and the frictional heating model, are described. In order to obtain a uniform current distribution in the solid armature during launch, necessary for postponing the transition of the armature to a hybrid one, three possible methods were investigated, i.e. the application of a resistive layer on the rails, the use of fibre armatures with tipped fibres and the lengthening of the armature.

Descriptors :   *COMPUTERIZED SIMULATION, *ARMATURES, *ELECTROMAGNETIC GUNS, NETHERLANDS, FINITE ELEMENT ANALYSIS, VOLTAGE, CURRENT DENSITY, MOLYBDENUM, COPPER, ALUMINUM, THERMAL CONDUCTIVITY, GUN LAUNCHED, GUN MUZZLES, SLIDING FRICTION, THERMOELECTRICITY.

Subject Categories : Computer Programming and Software
      Guns
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE