Practical evaluation method of flight simulator fidelity

Based on the analysisof the concept and research content of the simulation fidelity,this paper puts forward a practical evaluation method.According to the structureand modules of the flight simulator,and based on the analysis of pilot-aircraft controlling loop,the evaluation model of fidelity by applying the basic theory of fuzzy evaluationis established,and the simulation fidelity of the flight simulator is then evaluated according to the field specialist's opinionand evaluation model.It is proved that the method is valid for the evaluation,and can improve the flight simulator fidelity.