光电干扰箔片高速动态抛撒云团散布试验研究

为了研究大数量光电干扰箔片在高速环境中抛撒后的云团形态分布，以调速小火箭作为高速载体，配合活塞式的箔片抛撒结构，运用子母弹的抛撒方式，进行了不同速度下的抛撒试验。通过抛撒各阶段云团发展状态的高速数字图像记录，清晰反映了箔片出舱、分离、扩散的动态过程。从微观上分析了箔片的运动过程，得出了箔片在高速抛撒过程的分离规律；从宏观上统计分析箔片与云团散布参数，分析了不同速度下箔片散布特征。对比不同载体速度发现，载体速度的增加可明显增大云团的径向分布范围和云团响应速度，但并不能线性增大云团的径向分布范围。

Experimental Study of Distribution of Chaff Cloud Launched at High-speed

In order to study the separation and dispersion of chaff cloud launched at high-speed,the chaffs were packed and launched by the adjustable speed rocket at different speeds,which utilize the throwing system structure of airborne dispenser.The chaffs were launched from a piston,separated and dispersed in the high speed airflow,and the detailed motion of chaff cloud was clearly recorded using several high speed cameras.After statistical analysis of the test results,the separation mechanism and dispersion parameter of chaff cloud are concluded.In comparison with the experimental results launched at different speeds,it is clearly concluded that the radial distribution of chaff cloud and the onset time increases with the increment of the velocity of carrier.However,the radial distribution of chaff cloud will not linearly increases with the increment of velocity of carrier.