全回转电力推进科考船航向稳定性分析

Investigation for Shipping-direction Stability of Full Rotary Electric Propelling Scientific Research Vessel

文章针对某型科考船航向稳定性达不到同类船的平均水平的情况,从船舶的外形设计、舵角误差、双桨推力不平衡、海况干扰等方面做出分析和研究,对实船进行了校准及改进,并以改进后的实测数据进行验证。结果表明:在全速不操舵情况下3分钟偏航角减小了46%,很好地解决了该型船航向不稳定问题,提高了船舶的安全性。

Considering that the shipping-direction stability of a certain type of scientific research ship cannot reach the average level of similar ships,this paper analyzes and studies the ship's shape design,the error of the rudder angle,thrust imbalance between the two propellers,sea state interference and so on.In the paper,the target ship is calibrated and improved,and verified according to the improved measured data.The results show that the yaw angle can be reduced by 46%in 3 minutes without steering at full speed,which can solve the problem of unstable course and improve the safety of the ship.