关键词: 复合推进剂;无烟推进剂;信号衰落

Abstract: The effects of exhausts produced by burning solid composite propellams in combustoxs on the attenuation of laser, infrared, visible light and microwave signals are investigated experimentally. The results are also analysed and explained theoritically.It is found that.( 1 ) The more A1 powders the propellants contain, the greater is the attenuation.( 2 ) The attenuation goes up as the combustion pressure is increased.The attenuation of microwave signals is found least among them.( 3 ) The attenuation is relative to AP or Al particle size distribution. With fine Al particles, the component of fine AP (<180mesh) should be less than 20% for laser, infrare light and visible light; and that of fine AP should be more than 40% for microwave.The relations among the signal attenuations, the size distributions of combustion residue and the content percentage of Al in the combustion residue( A1/A12O3) are also discussed in this paper.

Key words: Composite propellant;Smokeless propellant;Signal fading