What Is It?
The Electromagnetic (EM) Railgun is a long-range weapon that fires projectiles using electricity instead of chemical propellants. Magnetic fields created by high electrical currents accelerate a sliding metal conductor, or armature, between two rails to launch projectiles at 4,500 mph to 5,600 mph.
How Does It Work?
Electricity generated by the ship is stored over several seconds in the pulsed power system. Next, an electric pulse is sent to the railgun, creating an electromagnetic force accelerating the projectile at speeds of up to Mach 7. The kinetic energy warhead eliminates the hazards of high explosives in the ship and unexploded ordnance on the battlefield.
What Will It Accomplish?
With its increased velocity and extended range, the EM Railgun will give Sailors a multimission capability, allowing them to conduct precise naval surface fire support,or land strikes; cruise missile and ballistic missile defense; and surface warfare to deter enemy vessels. Navy planners are targeting a 50- to 100-nautical mile initial capability. A variety of new and existing naval platforms—including the DDG51—are being studied for integration of a future tactical railgun system.