高速滑行艇三自由度运动预报与仿真

3-DOF Motion Prediction and Simulation of High-Speed Planing Craft

高速滑行艇具有航速高、机动性好等特点,在海上救助、气象监测等方面具有广阔前景。受到波、浪、流等环境因素的影响,滑行艇将产生多自由度的复杂运动。针对这些相对复杂的环境条件,用maxsurf完成了滑行艇的艇形设计,建立了分段调节功率喷水推进模型及滑行艇前进、升沉、纵摇三自由度运动数学模型,进行水动力分析和初步性能评估,并用Matlab程序编写了仿真系统,进行了三自由度强耦合运动的预报模拟,得到该滑行艇的运动时航速、深沉位移、纵倾角、阻力以及动升力、静浮力等变量与时间的关系,为高速滑行艇的研究、设计提供了一种有效的仿真平台。

A high-speed planning craft,with the feature of high speed,good flexibility and other features,owns a very broad prospect in the rescue on sea,weather monitoring and other aspects.Due to wave,billow,current and other environmental factors,the movement of a planing craft will be complex and in a number of degrees of freedom.Aiming at this complex environment,a shape was designed by Maxsurf,and a model of water jet propulsion regulating in two steps was made,also,the numeral model of three degrees of freedom in coupled movement of forward,heave and pitch was simulated.And a preliminary performance was evaluated.The simulation system was programmed by Matlab.At last,the simulation movement of coupled three degrees of freedom provides the change of the speed,the displacement of heave,the angle of pitch,resistance,hydrodynamic lifting force,static buoyancy and other variables with time,which gives a reliable simulating podium for the research and design of high-speed planning crafts.