Magnetic Induction Launcher Models.
Final rept. Jun 94-Aug 96,
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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Various computer models developed to aid in the design of magnetic induction launchers or coilguns are described. The first models the launch process based on launcher circuit parameters, in particular, the coil inductance as a function of projectile position Lx. The second set of models calculates the overall inductance of the launcher coil both with and without the plate present The difference between the values deltaL Linfinity- LO has proven to be a key parameter in determining the relative performance of different launcher designs. The third set of models estimate the fields and forces generated by the launcher, under the assumption of filamentary conductor structures and static conditions. The methods used to avoid the complications associated with the dynamic nature of the actual launch process are described. These last models yield an inductance gradient function dLdx that is crucial for the assessment of launcher performance. The usefulness of these models has been demonstrated in a project to design a coilgun that launches metal plates against incoming kinetic energy KE penetrators.
- Electricity and Magnetism