Dragon Wings Sky

A rough estimate of the data For the penetration power The crossbow bolt fired by the crossbow has a slender shape, so all the kinetic energy is concentrated in a place with a small cross-sectional area. Therefore, the penetrating power of crossbow arrows is greater than that of short bullets. Under the same kinetic energy conditions, even if a high-hardness armor-piercing bullet is used The penetrating power of arrows is also 3-10 times that of bullets (depending on the length of the arrow, the slender and harder it is, the better the penetrating power) When the arrow has a kinetic energy of about 60J, its penetration power far exceeds that of a 9mm pistol bullet (brass bullets have poor penetration, while steel-core bullets have equivalent penetration) The muzzle kinetic energy of the ak47 is 1980J. If a steel core bullet is used, the penetration is equivalent to an arrow of 200-300J. Under the condition of a draw distance of 0.5 Meters, a crossbow with a draw weight of 266-408 kilograms can achieve this kinetic energy value (the energy efficiency of the crossbow is calculated as 60%)