What is a Rail Gun?

Rail Gun, also known as railgun, is an advanced kinetic energy killing weapon made using electromagnetic launch technology. Unlike traditional cannons that apply the pressure of gunpowder gas to projectiles, railguns use the force of an electromagnetic field in an electromagnetic system, and the action time is much longer, which can greatly increase the speed and range of the projectile.

Railgun

The force of the railgun to propel the projectile is mainly the ampere force. The basic calculation process is the same as that of the "powered iron rod moving in a magnetic field" in high school:

Where F is the ampere force, I is the current of the conducting rod (cannonball), L is the vector of the length of the conductor rod along the current direction, and B is the direction of the magnetic field.

For a small electromagnetic cannon project for personal experiments, the magnetic field B can be provided entirely by a powered rail. The magnetic field at this time can be considered as the superposition of the magnetic fields of two parallel straight wires of semi-infinite length with opposite currents. Its value is:

Where ₀ is

The electromagnetic gun sounds very mysterious, but its structure and principle are very simple. Electromagnetic gun is used

A large destroyer obtained coordinates of the position of the enemy's headquarters 300 kilometers away, but it did not launch a $ 1 million

The concept of maritime strike in the US Navy's "21st Century Maritime Power" concept once listed electromagnetic rail guns as a bright spot in the future development of naval equipment. ^[1]

On July 11, 2014, the United States Naval Research Service (ONR) has installed two prototypes of electromagnetic railguns on the "Milinokit" joint high-speed ship (JHSV), which is stationed at the San Diego Naval Base The prototype of the electromagnetic orbital gun has been successfully tested and launched several times under laboratory conditions. ^[5]

On March 2, 2015, a new type of weapon from the US Navy that fired a shell at 7 times the speed of sound was exhibited for the first time. Researchers describe the railgun as "Star Wars technology." It can fire shells at 7 times the speed of sound and can penetrate concrete 100 miles (about 160 kilometers) away. ^[6]

On July 13, 2016, according to the Russian satellite network, the electromagnetic railgun accelerator developed by Russian engineers was tested for the first time at the High Temperature Joint Research Institute of the Russian Academy of Sciences. It can make objects reach the first cosmic velocity. ^[7]