Navy's Electromagnetic Railgun Reaches Testing Milestone

First fired March 6, 2007 at a magnitude of 0.5 megajoules, the railgun system at NRL has been modified and enhanced over the last four years to operate routinely at a 1.5 megajoule launch energy - a megajoule is a measurement of kinetic energy associated with a mass traveling at a certain velocity. In simple terms, a one-ton vehicle moving at 100 mph has approximately one megajoule of kinetic energy.