发动机喷流对飞行器飞行姿态影响的研究

针对某型导弹的实际飞行结果，在对立了合理的发动机推力模型及喷流模型的基础上，采用多学科的一体化仿真方法，重点研究了发动机喷流干扰对该型导弹飞行性能的影响。结果表明发动机喷流与发动机推力偏心及偏斜的共同作用将对飞行器飞行姿态和弹道产生显著影响，在飞行控制系统的仿真研究与参数整定中应综合考虑这些因素。

The simulation of nozzle exhaust effects on aircratf's flight attitude

Some phenomena occurred in a missile's flight test are first introduced.Then after building reasonable engine thrust and nozzle exhaust model,the integrated simulation of the missile's flight attitude based on multidisciplinary synthesis is carried out with the emphasis on studying nozzle exhaust's impacts. The results indicate that the interference of nozzle exhaust with thrust eccentricity and deflexion will have significant effects on missile's flight attitude and trajectory.Therefore much consideration should be given to these coupled effects in flight control system's simulation and parameter adjustion.