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ON THE TECHNICAL WAYS TO IMPROVE THE MUZZLE VELOCITY OF A CALIBER ANTIAIRCRAFT GUN
Abstract
With the development of missile technology, the combat mission of antiaircraft artillery has changed from attack to defense. Due to its light weight, large ammunition reserve and continuous firing for a long time, medium caliber antiaircraft artillery is still an effective weapon against high-altitude, hollow and shore attacks [1-3]. In order to further improve the survivability of the ship, further shorten the reaction time of the weapon, improve the firing accuracy and shorten the flight time of the projectile are the main technical means that can be applied. The muzzle velocity is the main factor affecting the flight time. Based on the latest development of internal ballistics and charging technology [4-5], this paper calculates and analyzes from the aspects of lengthening barrel, using sub caliber projectile, using Dun propellant technology with high increased surface and high loading density, increasing the maximum chamber pressure of gun and increasing the volume of gun chamber, obtains the influencing factors of increasing muzzle velocity, and focuses on the feasibility of increasing muzzle velocity. The analysis shows that in order to increase the muzzle velocity of 76mm gun, lengthening barrel, increasing chamber pressure, adopting insensitive propellant technology and reducing projectile weight are the main factors affecting the muzzle velocity of 76mm gun, while increasing chamber volume has little effect. Therefore, the muzzle velocity of the gun should be greatly increased. If the barrel is extended by 1m (the extension increase is 22%), the sudden propellant is used (the charge amount is increased by about 14%), the projectile weight is reduced to 3.5kg (the reduction range is 40%), and the chamber pressure is increased to 400MPa (the copper column pressure is about 357mpa, increased by 20%), the muzzle velocity can reach 1398m / s, and the muzzle velocity increase range is 42.6%. The analysis of this paper provides a certain reference for the technical transformation of a caliber gun.
DOI
10.12783/ballistics22/36098
10.12783/ballistics22/36098
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