关键词: 直升机, 机动飞行, 仿真模型, 非定常气动特性, 气动干扰, 神经网络

Abstract: An aerodynamic model suitable for simulating the helicopter maneuver flight is presented. In order to enhance the credibility of the model, based on the experiment of the rotor response characteristics to rapid control input, a noolinear aerodynamic model of the rotor was built up. The experimental investigation of the aerodynamic interaction effect of the rotor wake on the helicopter fuselage was executed also, and the aerodynamic model of fuselagewas built up with multiplayer feed-forward neural networks. The simulation model based on the experimental investigation is credible and usable for research of helicopter maneuver flight . It is verified by some flight-test data of UH60A helicopter.

Key words: maneuver flight, simulation model, unsteady aerodynamics, aerodynamic interac tion, neural networks