What set off the shells of the 20th century?

There are two explosion modes of shells, 1 is triggered, and 2 is fuze adjustment.

1. The structure of the trigger projectile is relatively simple. Fuzes are located at the tip of the projectile and are usually stored separately from the warhead. When in use, it is only installed on the projectile. After the projectile is launched, it will explode when it touches an object. Also known as collision bombing.

2. The structure of the fuze adjustable projectile is complex, and there is nothing on the tip of the projectile. The fuze is installed in the projectile, and the explosion is time-controlled.

You can adjust the morning shift and night shift modes. If you want to attack the troops after cover or assembly, use the early detonation method. Calculate the distance, angle and fuze starting time before shooting. After shooting, the fuse will start immediately, allowing the shells to explode over the enemy, creating a mass killing effect.

If you want to attack underground fortifications, you must first adjust the fuse, and the fuse will not start to explode until the shell passes through the protective material and enters the enemy fortifications. This is a delayed detonation. Therefore, the caliber of these guns is relatively large, ranging from 155mm to 203 mm