Research On A Modeling Method Of Dynamic Model Used In The Fighter Simulation

Aimed at the flight characteristics of fighter planes, the thesis puts forward a whole set of modeling method of dynamics used in the flight simulation system, and moreover, it first proposed the adjustment methods of flight performances applied in the flight simulation system. The study has important practical significance and wide application prospect in the flight simulation system of the fighters.Firstly,in this paper, the basic theoretical knowledge about the flight dynamics has been comprehensive expounded, and it mainly focused on analyzing the interpolation algorithm, numerical integration of Euler's method, fourth-order Runge-Kutta method and the quaternion law used in solving for the aircraft attitude angles used in numerical calculation method. Secondly, according to the function features of dynamic systems, it has been divided into a number of interrelated subsystems. Each subsystem has established a corresponding mathematical model. These include aerodynamic model, gravity model, atmospheric model, dynamic model, the landing gear model and calculation model for the solution of the equations of motion, and completed the procedures for the preparation of the various models, but also through the program debugging.Lastly, in this paper, the fighter's flight performances and taking-off and landing performances were analyzed in deep respectively, and the formulas of the corresponding performances were conducted. And in according with the formulas, this paper has also proposed the adjustment methods of changing the performances. Finally the adjustment for the maximum and minimum horizontal speed, descent performance, durance performance, horizontal acceleration and deceleration capacity, the normal hovering performance, and take-off and landing performance have been discussed separately.