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ship turning
相关语句
  船舶转向
     Research on ship turning controller
     船舶转向控制器研究
短句来源
     Design of Ship Turning Adjuster by the Method of Fragmenting Gain
     分段变增益船舶转向调节器的设计
短句来源
     The designed controller is used to build up the model of ship course control system. The simulation results show that with or without disturb or random disturb, the ship course control system based on IGA-BP algorithms can lead to no overshoot of ship turning and quick following, which is better than the controlling result of BP algorithm.
     将设计的控制器用于建立船舶航向控制系统模型,仿真结果表明,在船舶无干扰和存在随机干扰的情况下,基于IGA-BP算法设计的船舶航向控制系统均能使船舶转向控制无超调,跟踪快,比BP学习算法的控制效果更理想.
短句来源
     It provides a method of fragmenting gain for ship turning adjuster which could apace and stably achieve turning adjustment just by simple and useful measures based on yawing degree.
     介绍了一种简单实用的船舶转向调节器的设计方法,该调节器只需偏航角量测值便可实现快速平稳的转向调节。
短句来源
  “ship turning”译为未确定词的双语例句
     An Investigation of Ship Turning Motion in Regular Waves
     船舶在规则波中回转运动的研究
短句来源
     Real Time Dynamic Simulation of Very Large Ship Turning
     超大型船舶旋回调头的实时动态仿真
短句来源
     The maximum irregularly varying stress is produced with the ship turning quickly to starboard side and equals—8 Kg/mm~2. (3)In order to establish a reasonable design standard on the strength of a ship propeller,it is very important to take into account the fatigue strength of the propeller.
     在实船右急转弯时产生了不规则变动的应力最大值,其值为—8kg/mm~2。 (3)为了建立一个合理的实船螺旋桨强度设计标准,考虑螺旋桨的疲劳强度是非常重要的。
短句来源
     The Advantage of Fast Ship Turning Away from the Target and the Revision of Responsibility between Vessels
     快船背转优势与让路责任划分的修改意见
短句来源
     Calculation methods of changing course to avoid collision based on ship turning
     基于船舶旋回的变向避碰解算方法
短句来源
更多       
  相似匹配句对
     Research on ship turning controller
     船舶转向控制器研究
短句来源
     THE LONGITUDINAL DISTANCE OF A SHIP IN TURNING
     船舶回转中的进距估算
短句来源
     SHIP AND ART
     船与艺术之一斑
短句来源
     On Ship Mortgage
     船舶抵押权
短句来源
     CNC Turning
     CNC车加工
短句来源
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  ship turning
Engine and rudder are needed to avoid the ship turning and drifting away from the FLNG.
      


Because of the influence of the hull, the stern propeller of a twin-screw vessel is working under condition of oblique flow, and the unsteady working condition of the blade of a propeller is created. In this paper a study of the influence of oblique flow on various aspects of the properties of a propeller is described. It has been found that the thruat coefficient and the torque coefficient of a propeller working under condition of oblique flow are increased. If the angle of oblique flow is large, it is necessary...

Because of the influence of the hull, the stern propeller of a twin-screw vessel is working under condition of oblique flow, and the unsteady working condition of the blade of a propeller is created. In this paper a study of the influence of oblique flow on various aspects of the properties of a propeller is described. It has been found that the thruat coefficient and the torque coefficient of a propeller working under condition of oblique flow are increased. If the angle of oblique flow is large, it is necessary to introduce a suitable correction in screw design, otherwise, the screw would work under overload condition. It would cause the main engine unable to rotate at the given revolution with developing full power, so the designed speed of ship may not be reached. The approximate formulas for this correction are suggested. In addition, it is found the propeller lias been experienced by a transverse force while working in oblique flow. This transverse force consists of two parts: a force acting in the plane passing through this axis of propeller and parallel to the plane of oblique flow; and an another force, which is perpendicular to the plane. The first part of this force is already known before; the another part is arising from a blade working under unsteady condition. This is the reason for some single-screw ships turning automatically, thus explained why some vessels automatically turn along certain direction. In this paper these approximate formulas for the calculation of the aforesaid transverse force are suggested, and may be applied to compute the magnitude and the direction of transverse force acting on a propeller.

由于船体的影响,双桨船的螺旋桨处于斜向来流的条件下运转。斜流造成螺旋桨叶工作状态的非定常性。本文研究了斜流对螺旋桨性能影响的各个方面。发现处于斜流中运转的螺旋桨的推力系数及扭矩系数都增大。若斜流角较大,则设计时有必要进行适当的修正,否则螺旋桨将处于重载情况下工作。主机不能达到预定的转速。不能发出全部功率及达到设计航速。推出了计算上述修正量的近似公式。此外,还发现螺旋桨在斜流中运转时,受到侧向力的作用。该侧向力可分为两部分:一部分处于斜流v_s并通过桨轴的平面内(L_n);另一部分垂直于前述平面(L_ξ)。前者是众所周知的侧向力;后者是由于桨叶处于非定常状态而引起的侧向力。这个侧向力就是引起某些单桨船自动进入回转的原因。因而得以解释某些船舶自动转入回转,并沿一定方向回转的现象。文中推荐了估算上述侧向力的近似公式,可以用来估算作用在螺旋桨上的侧向力的大小及方向。

In this paper an experimental study on the stresses in the blades of a propeller of tugboat is presented,covering the results of bollard test,self running test.service running test,and steering manoeuvres test.The main conclusions obtained are as follows: (1)The mean stress of a propeller blade is linearly proportional to the propellers torque Q,but there is no linear relation between the fluctuating stress and torque Q.Nor is there between and nv—product of propeller speed and ship speed. (2)The largest mean...

In this paper an experimental study on the stresses in the blades of a propeller of tugboat is presented,covering the results of bollard test,self running test.service running test,and steering manoeuvres test.The main conclusions obtained are as follows: (1)The mean stress of a propeller blade is linearly proportional to the propellers torque Q,but there is no linear relation between the fluctuating stress and torque Q.Nor is there between and nv—product of propeller speed and ship speed. (2)The largest mean stress will be found in the bollard state while the largest fluctuating sterss in the self running state.Their values are—5.84 kg/mm~2 and 4.66 kg/mm~2 respectively. The maximum irregularly varying stress is produced with the ship turning quickly to starboard side and equals—8 Kg/mm~2. (3)In order to establish a reasonable design standard on the strength of a ship propeller,it is very important to take into account the fatigue strength of the propeller.As for a propeller of a tugboat,it is necessary to calculate the fatigue strength in the self running state as well as the static strength in the bollard state.In the case of propellers of the GD type,the strength calculations of the blade on the 0.25 R and 0.4 R sections should be taken into censideration.

本文介绍我国第一次成功地在拖船上测量螺旋桨叶片应力的实验研究,包含系桩、自由航行、营运拖航以及一些操纵运动等试验项目,得到了如下主要结果:(1)桨叶平均应力与螺旋桨扭矩成线性关系,但变动应力 Q 与扭矩 Q 或与转速航速之乘积 nV 却无线性关系。(2)就最大值而言,平均应力以系桩状态为最大,变动应力以自由航行状态为最大,其值分别为—5.84kg/mm~2和4.66kg/mm~2。在实船右急转弯时产生了不规则变动的应力最大值,其值为—8kg/mm~2。(3)为了建立一个合理的实船螺旋桨强度设计标准,考虑螺旋桨的疲劳强度是非常重要的。对拖船螺旋桨来说,除了应计算系桩状态的静态强度外,还应计算自由航行状态的疲劳强度。就关刀型螺旋桨而言,应考虑0.25R 和0.4R 处的桨叶强度计算。

A mathematical model suitable for sail asisted ship is formulated. The effect of sail on control boundary and freely manoeuvrable range of the ship in wing is calculated and analysed. An approximate formula of controling sail for minimizing the tactical diameter of the ship turning in wind is derived by using the theory of optimal control. Turning ability of ship in wind is calculated. All these investigations indicate that the manoeuvrability of the ship with a sail in wind is better...

A mathematical model suitable for sail asisted ship is formulated. The effect of sail on control boundary and freely manoeuvrable range of the ship in wing is calculated and analysed. An approximate formula of controling sail for minimizing the tactical diameter of the ship turning in wind is derived by using the theory of optimal control. Turning ability of ship in wind is calculated. All these investigations indicate that the manoeuvrability of the ship with a sail in wind is better than that without one if the attack angle of the sail is appropriately adjusted and the position of thesail is properly arranged.

文中首先建立了风帆助航船的数学模型,计算和分析了帆对船在风中的风速限界线和可自由操纵区的影响,利用最优控制理论推导出使船在风中回转战术直径为最小的操帆规律的近似公式。然后对风帆助航船在风中的回转性能进行了数值计算,研究了帆的位置对船舶操纵性的影响。结果表明,风帆助航船若帆的位置布置得当,且适当地操帆,则其在风中的船舶操纵性能比未装帆时要好得多。

 
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