固体燃料冲压发动机推力平稳性及飞行稳定性分析

分析了固体燃料冲压发动机中燃面退移速率的影响因素,建立了燃面退移速率仿真模型。在此基础上,建立了固体燃料冲压发动机工作过程仿真模型。采用该模型对固体燃料冲压发动机超音速巡航导弹的推力平稳性和飞行稳定性进行了分析。分析结果表明,选择适当的发动机设计参数能确保推力随时间的变化最小;发动机能根据巡航导弹飞行高度和速度的变化进行调整,使巡航导弹维持在设计点飞行。

Analysis on thrust stationarity and flight stability of solid fuel ramjet

The influencing factors of fuel surface regression rate in solid fuel ramjet were analyzed,and the simulation model of fuel surface regression rate was derived.On the basis of the model,the simulation model of operation process of solid fuel ramjet was established.Thrust stationarity and flight stability of the supersonic cruise missile were analyzed by means of the model.The results show that the proper motor parameters can ensure the minimum thrust variation with time,and the thrust of the motor can be adjusted according to the velocity and height variation of the cruise missile so as to make the cruise missile fly near the design point.