A method is proposed for dividing the flight envelope into a number of sub-regions in witch the perturbations of aeroengine model are relatively small.

Good tracking performance is required when designing an autopilot of a missile,due to the dramatic changes of flight altitude and Mach numbers throughout the flight envelope.

The calculated results indicate that the division method of flight envelope is proper.

Based on the large numbers of flight parameters of x preponderant aeroengine,selecting the linear small devia- tion state variable model,using linear recognition method,this paper obtains the model parameters in certain state of flight envelop region particle.

A design method for the large-envelope flight control law was proposed based on the Kriging modeling technique and robust gain-scheduling design theory,which is suitable for the airplane with multiple control surfaces.

Design of full flight envelop aero-engine controllor system is studied,the problems of dividing flight region and the selection of nominal plant in corresponding region are analyzed,and the method of dividing flight region based on the engine inlet parameters is introduced.