论文部分内容阅读
冲压加速器是利用推进剂气体混合物的化学能将弹丸加速到超过２ｋｍ／ｓ初速的新发射技术，根据弹丸的速度和气体混合物的爆轰速度可将它分为三种运动模式．简述了冲压加速器的基本原理，对冲压加速器中常用的甲烷、氧和氮混合物的爆轰速度进行了实验测量，并用爆轰理论对爆轰参数进行了计算．结果表明，改变气体混合物中稀释剂氮的含量，就可以调节它的爆轰速度，在甲烷当量比不变时，混合物的爆轰速度随氮的含量增多而下降．
The stamping accelerator is a new launching technology that utilizes the chemical energy of a propellant gas mixture to accelerate the projectile to a velocity beyond 2 km / s. The projectile can be divided into three modes of motion according to the velocity of the projectile and the detonation velocity of the gas mixture. The basic principle of stamping accelerator is briefly introduced. The detonation velocity of methane, oxygen and nitrogen mixture commonly used in stamping accelerator is experimentally measured, and the detonation parameters are calculated by detonation theory. The results show that the detonation velocity can be adjusted by changing the content of nitrogen in the gas mixture. When the methane equivalence ratio is constant, the detonation velocity of the mixture decreases with the increase of nitrogen content.