发射药的等离子体点火燃烧中止试验研究

用等离子体点火中止燃烧装置,研究了等离子体点火太根药、双基药、硝胺药及单基药的燃烧中止现象,借助所得回收样品的显微照片和中止压力-时间曲线分析了等离子体与发射药的相互作用规律.结果表明,由于等离子体的侵蚀和辐射作用,发射药的燃烧表面不规则;不同配方发射药的点火延迟时间不同,太根发射药等离子体点火的延迟时间最短,容易实现等离子体点火.发射药的理化性质,包括配方和添加剂成分、表面状况、热传导系数和光学吸收系数等对等离子体点火有着显著影响.

Interrupted-burning Test Study of Interaction between Plasma and Propellants

Interrupted-burning phenomena of different propellants such as triethyeneglycol dinitrate(TEGDN),double-base propellants,nitramine propellants and single-base propellants ignited by plasma are studied by interrupted-burning setup.With the help of the obtained microscopy images of recovered specimens and interrupted-burning pressure vs.time curves,the interaction rule between plasma and propellants with different formulas is discussed.The results show that burning surface of propellants is not regular because of plasma ablation and radiation.Ignition delay time of different propellants is not same and ignition delay time of TEGDN propellants is the shortest and the ignition by plasma easily takes place.The physicochemical properties of propellants,such as ingredient of propellant and additive,surface statue,optical adsorption coefficient and thermal conduction coefficient,et al,have significant effect on their plasma ignition performance.