DYNAMIC SIMULATIONS OF INFLUENCE OF SHIP ROLLING MOTION ON AERODYNAMIC FLOW FIELD AND HELICOPTER LOADING UNDER HELICOPTER-SHIP COUPLING

The six degrees of freedom (6-DOF) motions of the ship is an important factor for helicopter landing on a ship safely, especially the rolling motion of ships has a short period and large magnitude. This study aims to investigate the changes in the aerodynamic flow field and the influence on the helicopter loading when landing on a ship under rolling motion conditions. In previous studies, the coupled aerodynamic flow field and helicopter loading during helicopter hover on a ship have been analyzed, however, the dynamic process of helicopter landing on a ship has not been adequately analyzed. Hence, a dynamic simulation scheme for the entire landing process of the helicopter is proposed in this study. By comparing the existing static research scheme with the proposed dynamic simulation scheme, the differences between the two methods will be analyzed, and the optimal scheme will be selected to study the coupling between ship and dynamic helicopter landing. The aim is to gain a comprehensive understanding of the landing issues of helicopters on ships under rolling conditions, and to explore the variations in helicopter loading caused by rolling motion. This study will contribute to enhancing the safety and stability of helicopter landing on ships, providing crucial guidance and reference for the design and operation of shipborne helicopters.