Hydrodynamic performance analysis of unmanned shelter for maritime rescue
Due to the excessively large square coefficient of the airdropped shelter,it experiences severe yaw,roll and pitch during navigation,resulting in poor hydrodynamic performances.Therefore,it is necessary to analyze the hydrodynamic performances of the shelter in view of the problem of water entry navigation,and to design the preferred appendages to improve its stability.The hydrodynamic performances of the shelter,including rapidity,wave resistance and heading stability,are studied by CFD method according to the confirmed main scale of the shelter,ship shape parameters and the feasible area of the center-of-gravity position,and the appendages are designed and optimized for the shelter.In terms of rapidity,the resistance under fixed draft and longitudinal tilt and the static water resistance releasing pitch and heave under no-load and design load conditions are calculated.For wave resistance,it mainly calculates the wave drag increase and free rolling decay time under no-load and design load conditions,and bilge keel is added to improve roll stability.For heading stability,it mainly calculates the yaw decay time of the shelter,and improves its heading stability by adding bow and stern fins.Finally,the shelter equipped with the preferred appendages is analyzed and compared,and the resistance and power of the real ship are estimated.The shelter is optimized by adding appendages,and the hydrodynamic performance analysis proves the feasibility of its power and propulsion system.The shelter model adding preferred appendages is preliminarily determined,which provides technical reference for the subsequent overall design and equipment selection.
unmanned surface vehiclerescue shelterhydrodynamic performancerapiditywave resistanceheading stabilityoptimized design of appendages
万方数据
维普
