Accession Number : AD0868199

Title :   Electra, An Electromagnetic Pulse FORTRAN Program (User's Guide).

Descriptive Note : Final rept. Jan 67-Dec 69,

Corporate Author : BRADDOCK DUNN AND MCDONALD INC VIENNA VA

Personal Author(s) : Borbely, Jeffrey A. ; Jones, David L.

Report Date : OCT 1969

Pagination or Media Count : 150

Abstract : This report represents the partial results of an extensive technical program that began in January 1967 at the Army Mobility Equipment Research and Development Center (MERDC), Fort Belvoir, Virginia. At that time, it was determined that a requirement existed, within the Army, to develop the capability to calculate the electromagnetic pulse (EMP) environment that is produced when a nuclear explosion occurs on or near the surface of the earth. The digital computer code ELECTRA represents, for the Army, the culmination of the first phase of the development of that capability. ELECTRA is a two-dimensional (two space dimensions and time) finite difference code for numerically integrating Maxwell's equations in the presence of an applied current density and a finitely conducting earth. (Author)

Descriptors :   *ELECTROMAGNETIC PULSES), (*NUCLEAR EXPLOSIONS, (*NUMERICAL METHODS AND PROCEDURES, DIGITAL COMPUTERS), (*SURFACE BURST, TELLURIC CURRENTS), (*COMPUTER PROGRAMS, ELECTROMAGNETIC PULSES), DIFFERENCE EQUATIONS, PARTIAL DIFFERENTIAL EQUATIONS, COMPUTER PROGRAMMING, AIR, SOILS, ELECTRICAL CONDUCTIVITY, SUBROUTINES, NONLINEAR SYSTEMS, FLOW CHARTING, MAGNETIC FIELDS, ELECTRIC FIELDS, ATMOSPHERIC ELECTRICITY, MAGNETIC TAPE, PUNCHED CARDS.

Subject Categories : Numerical Mathematics
      Computer Programming and Software
      Computer Hardware
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE