Computation of Weight, Velocity, and Angular Distributions of Fragments from Naturally Fragmenting Weapons
NAVAL ORDNANCE LAB WHITE OAK MD
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A two space dimension, time dependent fluid dynamic computer program written specifically for weapon design and analysis work is described. Metal casings are treated as sets of mass points whose motion is found along with the gas flow. The gas dynamics following detonation of the explosive is Lagrangian, with provision for slippage along the metal boundary. The program, written in BASIC, is simple and quick to run and does not require an experienced programmer. Provision is made for calculating fragment numbers, weight distributions, and average velocities in the polar zones surrounding the weapon. These are obtained from the fluid dynamic calculations combined with fragment weight distributions assigned to the mass points. Calculated results for the 105 and 155 mm projectiles are listed. A complete list of the program, with notes, is included.