Coil Gun에서 Projectile 에 작용하는 Spinning Force와 Nutation

Spinning Force and Nutation acting on the Projectile of the Coil Gun

One of the abnormal motions of the projectile in the coil gun is spinning. It is found that the spinning force is closely related with air gap distance. Modified and detail analysis for the spinning is suggested in this paper. Two reasons for spinning force and Lorentz force affecting on the spinning are introduced. Nutation, which is a result of spinning, is explained there after.