DIGITAL SUPPORT OF AEROHYDRODYNAMIC HIGHSPEED AMPHIBIOUS VEHICLE DESIGN

The development of a high-speed amphibious vehicle directly depends on the quality of aerohydrodynamic design, since the determination of resistance to the movement from the water and air environments, as well as the provision of load-bearing properties, stability and controllability characteristics determine the possibility of competition of this type of equipment with other transport. The article presents the results of a study of the possibilities of aerohydrodynamics numerical modeling to provide digital support for the design of high-speed amphibious vessels, provides the results of determining the aerohydrodynamic characteristics of the layout options of the vessel, the results of determining the deformation of the water surface, and also provides an algorithm for providing digital support for the design of the aerohydrodynamic layout of a high-speed amphibious vessel based on the use of technologies CFD simulation. The results of numerical simulation of ground effect aerodynamics are presented in comparison with results of test in wind tunnel for different values of distance between ground and trailing edge of wing: there is a good agreement between numerical and experimental results. Also presented the results of numerical simulation of aerohydrodynamics of dynamic air cushion vessel with taking into account the influence of thrust propeller on the deformation of water surface as dependence of drag coefficient on ground clearance and profiles of deformed water surface inn different section planes.