Abstract: 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.Key

Key words: ordnancescienceandtechnology, chaff, electroopticinterference, dispersion, surface-typedecoy