NEWT: A Computer Code for Calculating the Kinematic Variables of a Projectile Subject to a Second Order Drag Law that is Penetrating an Elastic-Plastic Medium
ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD
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The motion of a projectile in an elastic-plastic medium can often be adequately described by a second order drag law. The differential equations describing this motion have been solved for a projectile of impacting velocity V sub o and frontal area pi R squared and a computer program NEWT has been written in the BASIC language to calculate the penetration, velocity, and energy deposition of the projectile at subsequent times. The code was written to describe projectiles in tissue simulant but it can be used to predict any motion described by a second-order drag law. The differential equations and their solutions are discussed in detail. A flow chart and code listing are given. A description of the user-supplied input is given. representative test problems are solved and their solutions are discussed.
- Numerical Mathematics
- Computer Programming and Software