丁羟推进剂高压燃速及其调控方法研究进展

Research Progress on High-pressure Burning Rate and Regulation Methods of HTPB Propellants

从丁羟推进剂的燃烧波结构出发,分析了高低压下推进剂燃烧火焰结构和燃面结构的变化,并借助燃速表达式阐明气固两相的传热传质是影响燃速的重要因素。综述了HTPB、AP粒径分布、RDX和HMX粒径等对丁羟推进剂高压燃速的影响,总结了金属氧化物、二茂铁及其衍生物、纳米催化剂、碳材料及其复合物、复合燃速调节剂在燃烧性能调控方面的研究进展,并分析了高压下丁羟推进剂发生燃速突增的可能原因。最后指出今后应加强以下几方面研究:(1)研究配方对丁羟推进剂高压燃烧性能的影响,阐明燃速拐点压强的变化规律;(2)研究压强对丁羟推进剂中各个组分燃烧特性以及组分之间相互作用的影响;(3)开发新型燃速调节剂,实现对丁羟推进剂高压燃烧性能的有效调控。

The combustion wave structure of HTPB propellants was introduced,and the changes of the combustion flame structure and burning surface structure of the propellants under different pressures were analyzed.The burning rate expression was used to clarify that the heat and mass transfer between the gas-phase and condensed-phase were important affecting factors for the burning rate of propellant.The effects of HTPB,AP particle size distribution,particle size of RDX and HMX in HTPB propellants on high-pressure burning rate were reviewed,the research progress of metal oxides,ferrocene and its derivatives,nano-catalysts,carbon materials and their composites,and catalyst composites in the control of combustion performance was summarized,and the possible reasons for the drastically increase on the burning rate under high pressure were analyzed.Ultimately,it is pointed out that the following researches should be strengthened in the future:(1)Studying the effect of formulations on the high-pressure combustion characteristics of HTPB propellants and clarifying the change law of the pressure where the pressure exponent breaks;(2)Studying the effect of pressure on the combustion characteristics of each component and the interaction between components in the HTPB propellants;(3)Developing new types of burning rate agents to effectively control the high-pressure combustion performance of HTPB propellants.