Power: Beer bottles can be shot to pieces at a distance of 30 meters, and beer bottles can be shot to pieces at a distance of 10 meters.
In fact, no matter whether it is a frameless slingshot or an ordinary slingshot, their power source is all rubber bands. So the power mainly depends on the size of the rubber band and the steel balls it is equipped with.
According to the kinetic energy formula, E=mv^2/2, the initial speed of the slingshot is generally 50m/s, and the steel ball is 8mm, then the mass of the steel ball is about 2.1g, and the kinetic energy is 2.61 joules. It is assumed that it is launched from a tubular object , then the inner diameter of the tube is also calculated as 8mm, and the internal cross-sectional area is about 0.2 square centimeters, converted into specific kinetic energy, 13.05 Joules/square centimeters.
Related introduction:
Slingshot became popular in the 1970s and 1980s. The slingshot is a cold weapon or a game tool. A slingshot generally consists of three parts: a bow frame, a rubber band, and a leather bag. It is generally made of tree branches and is in the shape of a "Y" shape. The upper two ends are tied with rubber bands, and the middle part of the rubber band is tied with a piece of leather that wraps the projectile.
The power of the slingshot depends on the tension of the rubber band and the rebound speed of the rubber band. The greater the tension of the rubber band, the heavier the projectile can be matched. The faster the rebound speed of the rubber band can provide the projectile with a greater initial velocity. The heavier the projectile and the higher the muzzle velocity, the more powerful it will be. Slingshots can be divided into blade-type slingshots and rubber band-type slingshots according to their firing mechanism. Blade-type slingshots include the most primitive bow-type slingshots and slingshot crossbows.
Rubber band slingshots can be divided into traditional slingshots and modern slingshots. The classification principle should be completely based on the presence or absence of sights and wrist rest labor-saving devices. For example, wooden slingshots and wire slingshots without sights are traditional slingshots, while so-called "traditional bows" with wire-cut or cast sights should strictly speaking be included in the category of modern bows.
Because in the world, before the development of cross-grip bow shooting in China, there was no one person or product to promote the principle of horizontal grip shooting. The earliest horizontal grip shooting was "the style of the king" ” (of course there is also the earlier XGD type), which pioneered the application and promotion of the horizontal grip and sight shooting principle in slingshot products, and is the veritable originator of the horizontal grip and sight shooting slingshot.
Typical types of modern slingshots that are relatively mature products include Sniper Eagle, Tyrannosaurus, Raptor, etc. Of course, slingshot guns should also belong to the modern slingshot category according to basic principles, but legal reasons make their development too restricted. At the same time, I would like to correct one point: modern slingshots are incomparable to traditional slingshots in terms of shooting accuracy and skillful operation speed. In the future, there may be slingshots with longer aiming distance, higher accuracy, and faster operation speed.