railgun

Electromagnetic Cannon - Science Museum Exhibits Scheme

What It Shows

Electromagnetic cannon, also known as AC coaxial coil cannon, consists of an acceleration coil and a "projectile" coil, and works based on the principle of magnetic field interaction between energized coils.

Science Behind It

In the 19th century, British scientist Faraday discovered that a wire located in a magnetic field would be pushed by a force when electrified, and if the wire was made to cut magnetic field lines in the magnetic field, an electric current would also be generated on the wire. This is the famous Faraday law of electromagnetic induction, which is also the fundamental principle of electromagnetic guns.

The simplest design of an electromagnetic cannon is as follows: a track is made of two conductors, and a shell is placed in the middle so that current can pass through the three to establish a circuit. Place this device in a magnetic field and apply electricity to the projectile, and the projectile will accelerate and fly forward. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. The electromagnetic cannon can accelerate a 300 gram projectile to about 4 kilometers per second.

Description

The exhibition items consist of a turret launcher, a target, and a recovery ball track, with several coils and sensors surrounding the barrel. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. Participants are prompted to activate the switch to generate electromagnetic induction, which generates a driving force to shoot the ball towards the target 4 meters ahead. The shooting score will be displayed on the digital screen on the target.

How to Take Part

① Participants activate the switch and shoot the ball;

② Watch the shooting results on the digital display screen;

③ Experience over, leave exhibition items.

form of expression

Mechanical and Electrical Interaction

Knowledge Expansion

Do you know the common sense of using electromagnetic guns in modern military fields?!

The electromagnetic gun truly used by developed military countries is an advanced kinetic energy killing weapon made using electromagnetic launch technology. Unlike traditional cannons that apply gunpowder gas pressure to projectiles, electromagnetic guns use the force of electromagnetic fields in the electromagnetic system, which lasts much longer and can greatly improve the speed and range of projectiles. Therefore, it has attracted the attention of military scientists around the world. Since the early 1980s, electromagnetic guns have become an increasingly important part of future weapon development plans.

Due to its advantages and characteristics, electromagnetic guns have been favored by navies around the world as a new type of weapon in the future, with a wide range of application prospects. one Electromagnetic guns can be used in space-based anti missile systems. Due to its extremely high initial velocity, electromagnetic guns can be used to destroy low orbit satellites and missiles, as well as intercept missiles launched by warships. two Used for air defense systems. Due to the high initial velocity and firing rate of electromagnetic guns, some military experts believe that electromagnetic guns can replace anti-aircraft weapons and air defense missiles to carry out air defense missions. For example, the United States is developing an electromagnetic gun with a firing speed of 500 rounds per minute and a range of tens of kilometers, which is prepared to replace the "dense array air defense system" on ships. It can not only strike various aircraft in the air, but also intercept air to ship missiles at a distance. The United Kingdom is also actively developing an air defense electromagnetic gun for armored vehicles. three Used for anti tank weapons. Due to its extremely high initial velocity, the electromagnetic gun has a strong armor piercing ability and can effectively penetrate tank armor, becoming an anti tank weapon. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. Reminder: The United States has conducted electromagnetic gun shooting experiments: electromagnetic guns fire shells with a mass of 50 grams and a speed of 3km/s, which can penetrate armor with a thickness of 25.4mm. Relevant information also reports that using an electromagnetic gun for testing can completely penetrate the armor thickness of simulated T-72 and T-80 tanks. It can be seen that electromagnetic guns have strong penetration ability and are excellent anti tank weapons. four Used to equip artillery units. With the development of electromagnetic launch technology, installing an electromagnetic acceleration system at the muzzle of ordinary artillery can greatly increase the range of the artillery, and thus electromagnetic guns are expected to be equipped in artillery units. The US Marine Corps is also interested in electromagnetic guns. The US Marine Corps often carries out combat missions overseas and requires long-range rapid strike weapons such as electromagnetic guns to provide fire support to soldiers engaged in coastal operations. The US Army is also developing smaller electromagnetic guns for land warfare. five Used for equipping naval vessels. Due to the characteristics of electromagnetic guns, they have the potential to replace artillery and become a new type of naval gun for equipping naval vessels. The US Navy is preparing to equip its ships with electromagnetic guns, and some military experts believe that electromagnetic guns may become a new weapon for the future US Navy.