摘要
机枪射击过程中换箱间隔、环境温度是影响机枪枪管温度的2个主要因素;通过拟合换箱间隔、环境温度与枪管最高温度数学关系,发现两者呈一阶线性相关,而环境温度与枪管最高温度呈正相关;分别选取3种机枪各两根枪管进行试验,分析射弹量对不同口径枪管初速、射击密集度R50、最大膛压、最大加速度、弹丸膛内运动时间等综合性能的影响。研究结果表明:随着累计射弹量的增加,弹丸初速先增加后减少,当射弹量为700发左右,弹丸初速最大;累计射弹量2000发是射击密集度的变化拐点,在此之前射击密集度在正常范围内呈现波动状态,在此之后逐渐增加;最大膛压、最大加速度、弹丸膛内运动时间均随射弹量的增加而逐步降低。
This paper has investigated the temperature change regularities of the gun barrel,and the muzzle velocity,firing dispersion in the shooting process.It emphasized on the time interval of changing box,environment temperature.The time interval of changing box and environment temperature were the main factors to influence the temperature of gun barrel,and it shows first-order linear fitting.There was a positive relationship between the environment temperature and the maximum temperature of the gun barrel.Then,it choose three kinds of gun barrels to carry out the test,and the effect of different numbers of fired ammunition on comprehensive properties was analyzed,including the muzzle velocity,firing dispersion(R50),the maximum pressure,the maximum acceleration,the movement velocity,etc.The results showed that the muzzle velocity increased at first and decreased to life-end;when firing 700 shots,the muzzle velocity climbed to the maximum.When the fired-ammunition number reached 2000 shots,the firing dispersion had made a great change and increased dramatically to the life-end state.As for the parameters,including the maximum pressure,the maximum acceleration,the movement velocity,they decreased gradually along with the increase of the fired-ammunition number.
作者
丁述宇
单永海
王平
徐云华
DING Shuyu;SHAN Yonghai;WANG Ping;XU Yunhua(63850 Unit of PLA, Baicheng 137001, China;Army Academy of Armored Forces, Beijing 100072, China)
出处
《兵器装备工程学报》
CSCD
北大核心
2021年第11期109-113,共5页
Journal of Ordnance Equipment Engineering
关键词
兵器科学与技术
枪管
温度
初速
射击密集度
ordnance science and technology
barrel
temperature
muzzle velocity
accuracy and dispersion
