Abstract: Based on the dynamic theory of rigid body systems and flying characteristics of aircraft during takeoff and landing, a sixdegree freedom aircraft equation of landing gears-aircraft fuselage rigid bodies system is formulated. The time domain step-target tracking pilot model is valuable to the analysis of flying qualities of pilot/vehicle system during takeoff and landing. The mathematical models of mechanical control system and fly-by-wire control system are provided. The nonlinear time domain computer program provides a complete quantitative analysis of aircraft takeoff and landing dynamics, and the numerical simulation results agree well with the real flight test data.

Key words: fly-by-wire control aircraft, pilot model mechanical control aircraft, takeoff and landing