Modelling of a light aircraft asymmetrical touchdown

Main objective of this paper is to develop the mathematical model and to find the aircraft landing characteristics from the numerical simulation. The asymmetrical touchdown is considered. The full, light aircraft dynamics in-flight model including gear and tire models will be presented. The equations of motions are obtained from the balance of momentum theorem and the balance of the moment of momentum theorem. Aerodynamic forces are determined basing on linear quasi-stationary aerodynamics model. Tire forces and moments are described by linear algebraic equations for stationary, and by linear differential equations for nonstationary model. Various stationary and nonstationary massless tire models are described. The presented mathematical model of aircraft can be used to calculate continuous time histories during the aircraft asymmetrical touchdown and also finding the stability of taxiing.