燃气流量可控的固体火箭冲压发动机燃气发生器动态特性  

Dynamic characteristics of controllable flow gas generator in solid rocket ramjet

作　　者：牛文玉[1] 于达仁[1] 鲍文[1] 曹军伟[2] 兰飞强[2] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001 [2]中国空空导弹研究院,洛阳471009

出　　处：《固体火箭技术》2008年第2期145-148,共4页Journal of Solid Rocket Technology

摘　　要：燃气流量可控的燃气发生器与燃气流量恒定的燃气发生器工作特性具有较大差异,燃气流量可控的燃气发生器是一个非最小相位系统。推导建立了燃气流量可控的燃气发生器的小扰动线性化动态模型,并基于此模型分析了燃气发生器负调特性的影响因素及燃气发生器系统的频率特性,得到了燃气发生器系统增益及时间常数随燃气发生器自由容积及燃气调节阀阀门面积的变化关系。研究表明,燃气发生器具有变参数特性。There exists large difference of working characteristics between the controllable flow gas generator and the constant flow gas generator, and the controllable flow gas generator belongs to a kind of non-minimum phase system. A small perturbation dynamic model of controllable flow gas generator was derived. The factors influencing negative regulation characteristics and frequency response of the gas generator were analyzed by means of the model. Finally the variation relationship between the gain, the time constants and the free volume of gas generator, the area of gas regulation valve was obtained. The results show that the gas generator possesses variable parameter characteristics.

关 键 词：燃气流量可控 非最小相位 燃气发生器 动态模型 变参数特性 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]