Barrel Wear Reduction in Rail Guns: An Investigation of Silver Paste Liquid-Metal Interface
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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This thesis tests the effects a commercial silver paste has on the damage at the projectile-rail interface of a 4 long rail gun test section. Projectiles 0.635 x 0.635 x 0.953 cm were pushed through the rail test section at 34 plus or minus 19 ms, while average current densities of 18 - 32 kAcm2 was passed through the projectile - rail interface material. The specific objective is to examine rail and projectile damage at current densities near or above those 25kAcm2 anticipated for a naval rail gun. Voltages across the rails were monitored and changes in conductivity when solid electrical contact was broken were observed.
- Electricity and Magnetism