Navigational water resistance analysis and optimization of the gondola of unmanned boat retractable device

Abstract Combining the characteristics of existing transfer slideway and double-point hanging type two retractable devices, this paper proposes a multiple-point hoisting, fast transfer, device. According to viscous flow theory, one-way fluid-structure interaction simulation is used for gondola structure unmanned boat Considering influencing factors width gondola, void ratio, shape distribution void, deployment angle guardrail, navigation water resistance each model compared analyzed, optimal design device discussed. The results show that increase top decrease front-end ratio will lead an in gondola; under same porosity, rectangular performs better than circular shape, smaller interval between rectangles more conducive reducing side door guardrail resistance; final optimized meets strength requirements extreme conditions high sailing speed.