Abstract: This paper studies a multifunction engineering flight simulation system used for ACT verifying aircraft and developed by China, analyzes the design philosophy principles and function requirements of flight simulation systems,and, faced to multifunction requirements(full digit real time flight simulation, fly by wire flight control iron bird integrate experiment, flight training simulation and engineering flight simulation) puts forward an overall design and system structure of the flight simulation system. The authors also study modeling and simulation of flight dynamic character of ACT verifying aircraft and method of increasing fidelity of simulation,study and develop a real time simulation management software system and man machine (user)interface. Application practice and evaluation of fly test pilot indicate that the design of the flight simulation system is successful and ratio of performance over price is high.

Key words: act ive contr ol technology, ACT verifying air cr aft, flight simulation, flight control, ir on bir d, fly by wir e