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液氧/煤油补燃发动机系统稳定性分析
引用本文:徐浩海,刘站国.液氧/煤油补燃发动机系统稳定性分析[J].火箭推进,2005,31(2):1-6.
作者姓名:徐浩海  刘站国
作者单位:陕西动力机械设计研究所,陕西,西安,710100
摘    要:为分析补燃循环液氧/煤油发动机工作的稳定性,建立了发动机的线性小偏差动力学模型,在小扰动的条件下研究了发动机工况变化、燃气导管容积对系统工作稳定性的影响。结果表明,在110%~50%工况范围内发动机系统都是稳定的,而随着工况的降低发动机稳定裕度在减小。当涡轮后燃气导管容积增大时发动机系统稳定裕度减小,而涡轮前燃气导管容积对发动机稳定性基本没有影响。

关 键 词:系统稳定性分析  煤油  液氧  发动机系统  发动机稳定性  稳定裕度  发动机工作  动力学模型  工作稳定性  补燃循环  工况变化  小偏差  小扰动  容积  导管  燃气  减小  涡轮
文章编号:(2005)02-0001-06
修稿时间:2004年4月27日

System stability analysis of a LOX/kerosene staged combustion cycle engine
Xu Haohai,Liu Zhanguo.System stability analysis of a LOX/kerosene staged combustion cycle engine[J].Journal of Rocket Propulsion,2005,31(2):1-6.
Authors:Xu Haohai  Liu Zhanguo
Abstract:The linear small deviation dynamic model is developed for the analysis of a LOX/Kerosene staged combustion cycle engine. Based on linear method under small disturbance, the effects of engine working condition and gas vessel volume on system stability are analyzed. The results show that the engine are steady between 50%~110% working conditions. It also shows that the higher working condition is preferable to attain high level stability and a bigger turbine outlet gas vessel volume decreases the system stability, the turbine inlet gas vessel volume has no effect on system stability.
Keywords:LOX/kerosene staged combustion cycle engine  small linear deviation dynamic  model  system stability  
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