Electromagnetic launch (EML) is a technology that uses electromagnetic energy to accelerate and launch projectiles in whole or in part. The device that uses EML technology to launch projectiles is generally referred to as electromagnetic gun.

Electromagnetic ejection is the electromagnetic thrust produced by the principle of electromagnetic action to accelerate the object. As the electromagnetic driving force is proportional to the square of the current, as long as enough current input is ensured, enough thrust can be generated in the launching device to make the object reach a higher speed.

At present, the maximum ejection speed is 150m / s and the caliber is 250mm, which can be made into larger specifications.