Ship Rudders: Parts, Function, Types with simple diagram
Stock: It turns the rudder, passing vertically upwards to the steering gear through a watertight rudder trunk. Rudder stock is usually connected by bolted coupling so that rudder can be removed for maintenance without disturbing stock.
Types of Rudders Used For Ships - Marine Insight
2024年2月11日 · To broadly categorize conventional rudders, there are two types of ship rudders: 1. Spade or Balanced Rudder. A spade rudder is basically a rudder plate that is fixed to the rudder stock only at the top of the rudder. In other words, the rudder stock (or the axis of the rudder) doesn’t run down along the span of the rudder.
Rudder Stock - an overview | ScienceDirect Topics
Rudder stock. Rudder stock may be of cast or forged steel, and its meter is determined in accordance with the torque and any bending moment it is to withstand. At its lower end it is connected to the rudder by a horizontal or vertical bolted coupling, the bolts having a cross-sectional area that is adequate to withstand the torque applied to ...
第5章 舵设备(船舶结构与设备课件) - 百度文库
1.舵叶（rudder stock） 舵杆是舵叶转动的轴，并用以承受和传递作用在舵叶上 的力及舵给予转舵装置的力。其下部与舵叶连接，上部与转 舵装置相连。 为了使舵在受损时不必拆开船体内的部分就能修理，把 舵杆分作上舵杆和下舵杆两段制造，然后用法兰接头连接。
舵杆 - 百度百科
舵杆是承受舵压力所引起的扭矩和弯矩的构件。 舵杆应具有足够的强度。 舵杆上弯矩最大的断面在下舵承处，所以一般都是首先确定下舵承处的舵杆直径。 对双支点舵自舵叶顶缘向下可逐渐减小，但不应小于下舵承处舵杆直径的0.75倍。 对单支点悬挂舵，自舵叶顶缘向下可减小为下舵承处舵杆直径的0.4倍。 对流线型舵当用垂直隔板代替舵杆时，应具有相等的强度。 同时，对于不处于螺旋桨尾流中的舵 (驳船上的舵、双桨三舵的中舵)，舵杆直径计算值减小10%。 舵杆应制成整 …
Rudder - Wikipedia
A rudder operates by redirecting the fluid past the hull or fuselage, thus imparting a turning or yawing motion to the craft. In basic form, a rudder is a flat plane or sheet of material attached with hinges to the craft's stern, tail, or afterend. Often rudders are shaped to minimize hydrodynamic or aerodynamic drag.
Understanding Steering Gear in Ships - Marine Insight
2021年2月20日 · The steering gear system generates a torsional force at a certain scale which is then, in turn, is transmitted to the rudder stock that turns the rudder. The intermediate steering systems of a modern-day ship can be multifarious with each small component having its …
Types of Ship Rudders, Their Essential Parts, and Profiles
2022年2月18日 · Conventional rudders are classified according to the position of the rudder stock in relation to the blade area. This is called Balance Ratio and is a very important factor in determining the performance of a rudder. The balance ratio compares the blade area forward of the hinge or rudder stock to the total area of the blade.
Construction and Types of Rudder on Ships - Marine …
2015年11月22日 · The upper face is formed into a usually horizontal flat palm, which acts as the coupling point for the rudder stock. A lifting hole is provided in the rudder to enable a vertical inline lift of a rudder when it is being fitted or removed.
How Does A Ship Rudder Function On A Vessel? - Maritime Page
2024年10月25日 · In other words, the rudder stock, also known as the rudder axis, does not follow the length of the rudder. In reality, whether a rudder is balanced or semi-balanced depends on where the rudder stock is located along the chord of the rudder (width meaning, from the forward to aft end of the rudder).