Motional characteristics and obscuration effect of infrared smoke screen in exoatmospheric space

The motional characteristics, spreading way and obscuration effect of infrared smoke screen particle are analyzed in this paper. Feasibility of infrared smoke screen used in exoatmospheric space is evaluated. Ultra-micro powder crystalline flake graphite with diameter of 1～10 μm is chosen as smoke screen material in consideration of its infrared attenuation effect. Initial velocity of smoke screen particle affects diffusivity of smoke screen. Obscuration for exoatmospheric target during about 10 minutes could be achieved with less smoke screen material by control the spreading velocity of smoke screen generator.