The principle of the electromagnetic railgun is very simple,
mainly consisting of two parallel metal rails and a conductive projectile.
The projectile is placed between the rails, forming part of a closed circuit.
According to the principle that an electric current will create a magnetic field, at the moment of electrification, an external power source releases a million-ampere level current to the rails,
causing a strong magnetic field to form around each rail as the current passes through them.
The magnetic fields of the two rails enhance each other between the rails, forming a magnetic field perpendicular to the current direction. Ultimately, the current in the conductive projectile interacts with the magnetic field, generating a Lorentz force that propels the projectile to move rapidly along the rails.
If you consider an analogy, imagine the two rails as super strong magnets, and the projectile as a train without wheels.
