Performance analysis of CAT III autoland systerm under steady wind interference

Abstract In view of the certification for the CAT III autoland of Civil aircraft, an analysis method based on Monte Carlo simulation is proposed. First of all, the performance requirements of CAT III autoland of Civil aircraft are analyzed, and then the autoland model of aircraft with six degrees of freedom is established, and the guidance law, autoland control law and steady wind random model are designed, and then the quantitative analysis of the touchdown point, touchdown attitude angle and vertical speed are carried out by Monte Carlo random simulation. The simulation results show that the autoland system satisfy the CAT III Autoland design requirements under steady wind interference, and recognize the factors that have a great influence on the automatic landing performance and the limitations of the CAT III autoland system through Monte Carlo simulation, which provides reference for the subsequent airworthiness compliance verification of civil aircraft.